Ryobi Biscuit Joiner DBJ50 User Guide

OWNER'S OPERATING MANUAL  
DETAIL BISCUIT JOINER / DBJ50  
DOUBLE INSULATED  
5
16  
45°  
3
4
3
1
2
0
90°  
1
2
3
SPECIFICATIONS:  
No Load Speed  
Rating  
19,000 rpm  
120 volts, 60 Hz, AC  
3.5 Amperes  
Fence Angles  
45° and 90°  
Fence Height Adjustment  
With Fence Angle Set on 90°  
With Fence Angle Set on 45°  
0 - 3/4 in.  
5/16 in. - 13/16 in.  
Depth Of Cut  
With Micro Depth Of Cut Adjustment 0 - 9/32 in. (0 - 7 mm)  
Net Weight  
3.625 lbs (1.65 kg.)  
THANK YOU FOR BUYING A RYOBI DETAIL BISCUIT JOINER.  
Your new detail biscuit joiner has been engineered and manufactured to Ryobi's high standard for dependability, ease of  
operation, and operator safety. Properly cared for, it will give you years of rugged, trouble-free performance.  
CAUTION: Carefully read through this entire owner's manual before using your new detail biscuit joiner.  
Pay close attention to the Rules for Safe Operation, Warnings, and Cautions. If you use your detail biscuit joiner properly and  
only for what it is intended, you will enjoy years of safe, reliable service.  
Thank you again for buying Ryobi tools.  
SAVE THIS MANUAL FOR FUTURE REFERENCE  
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READ ALL INSTRUCTIONS  
1. KNOWYOURPOWERTOOL. Readowner's  
14. SECURE WORK. Use clamps or a vise to  
hold work. It's safer than using your hand and  
it frees both hands to operate tool.  
manual carefully. Learn its applications and  
limitations as well as the specific potential  
hazards related to this tool.  
15. DON'T OVERREACH. Keep proper footing  
and balance at all times. Do not use on a  
ladder or unstable support.  
2. GUARD AGAINST ELECTRICAL SHOCK  
BY PREVENTING BODY CONTACT WITH  
GROUNDED SURFACES. For example:  
Pipes, radiators, ranges, refrigerator  
enclosures.  
16. MAINTAIN TOOLS WITH CARE. Keep tools  
sharp at all times, and clean for best and  
safest performance. Follow instructions for  
lubricating and changing accessories.  
3. KEEPWORKAREACLEAN.Clutteredareas  
and benches invite accidents.  
17. DISCONNECT TOOLS. When not in use,  
before servicing, or when changing  
attachments, blades, bits, cutters, etc., all  
tools should be disconnected.  
4. AVOID DANGEROUS ENVIRONMENT.  
Don'tusepowertoolsindamporwetlocations  
or expose to rain. Keep work area well lit.  
5. KEEP CHILDREN AND VISITORS AWAY.  
All visitors should wear safety glasses and be  
keptasafedistancefromworkarea.Donotlet  
visitors contact tool or extension cord.  
18. REMOVE ADJUSTING KEYS AND  
WRENCHES. Form habit of checking to see  
thatkeysandadjustingwrenchesareremoved  
from tool before turning it on.  
6. STORE IDLE TOOLS. When not in use tools  
should be stored in a dry, high or locked-up  
place – out of the reach of children.  
19. AVOID ACCIDENTAL STARTING. Don't  
carry plugged-in tool with finger on switch. Be  
sure switch is off when plugging in.  
7. DON'T FORCE TOOL. It will do the job better  
20. MAKE SURE YOUR EXTENSION CORD IS  
IN GOOD CONDITION. When using an  
extension cord, be sure to use one heavy  
enough to carry the current your product will  
draw. An undersized cord will cause a drop in  
line voltage resulting in loss of power and  
overheating. A wire gage size (A.W.G.) of at  
least 16 is recommended for an extension  
cord50feetorlessinlength.Acordexceeding  
100 feet is not recommended. If in doubt, use  
the next heavier gage. The smaller the gage  
number, the heavier the cord.  
andsaferattherateforwhichitwasdesigned.  
8. USE RIGHT TOOL. Don't force small tool or  
attachment to do the job of a heavy duty tool.  
Don't use tool for purpose not intended – for  
example – Don't use a circular saw for cutting  
tree limbs or logs.  
9. DRESS PROPERLY. Do not wear loose  
clothing or jewelry. They can be caught in  
moving parts. Rubber gloves and nonskid  
footwear are recommended when working  
outdoors. Also, wear protective hair covering  
to contain long hair and keep it from being  
drawn into air vents.  
21. OUTDOOR USE EXTENSION CORDS.  
Whentoolisusedoutdoors,useonlyextension  
cords intended for use outdoors. Outdoor  
approved cords are marked with the suffix W-  
A, for example - SJTW-A or SJOW-A.  
10. ALWAYS WEAR SAFETY GLASSES WITH  
SIDE SHIELDS. Everyday eyeglasses have  
only impact resistant lenses; they are NOT  
safety glasses.  
22. KEEPBLADESCLEANANDSHARP.Sharp  
blades minimize stalling and kickback.  
11. PROTECT YOUR LUNGS. Wear a face or  
23. KEEP HANDS AWAY FROM CUTTING  
AREA. Keephandsawayfromblades. Donot  
reachunderneathworkwhilebladeisrotating.  
WARNING:BLADESCOASTAFTERTURN  
OFF.  
dust mask if operation is dusty.  
12. PROTECT YOUR HEARING. Wear hearing  
protection during extended periods of  
operation.  
13. DON'T ABUSE CORD. Never carry tool by  
cord or yank it to disconnect from receptacle.  
Keep cord from heat, oil, and sharp edges.  
24. NEVER USE IN AN EXPLOSIVE  
ATMOSPHERE.Normalsparkingofthemotor  
could ignite flammable liquids, gases, or  
fumes.  
Page 3  
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RULES FOR SAFE OPERATION (Continued)  
25. INSPECT TOOL CORDS PERIODICALLY  
34. AVOID CUTTING NAILS. Inspect for and  
andifdamaged,haverepairedatyournearest  
authorized service center. Stay constantly  
aware of cord location and keep it well away  
from the rotating blade.  
remove all nails from lumber before cutting.  
35. NEVERtouchthebladeorothermovingparts  
during use.  
36. NEVER start a tool when the blade is in  
26. INSPECT EXTENSION CORDS PERIODI-  
contact with the workpiece.  
CALLY and replace if damaged.  
37. NEVER lay a tool down before the blade has  
27. KEEP HANDLES DRY, CLEAN, AND FREE  
FROM OIL AND GREASE. Always use a  
clean cloth when cleaning. Never use brake  
fluids, gasoline, petroleum-based products,  
or any strong solvents to clean your tool.  
come to a complete stop.  
38. POLARIZED PLUGS. To reduce the risk of  
electricshock, thisequipmenthasapolarized  
plug (one blade is wider than the other). This  
plug will fit in a polarized outlet only one way.  
If the plug does not fit fully in the outlet,  
reverse the plug. If it still does not fit, contact  
a qualified electrician to install the proper  
outlet. Do not change the plug in any way.  
28. STAY ALERT AND EXERCISE CONTROL.  
Watch what you are doing and use common  
sense.Donotoperatetoolwhenyouaretired.  
Do not rush.  
29. CHECK DAMAGED PARTS. Before further  
use of the tool, a guard or other part that is  
damaged should be carefully checked to  
determine that it will operate properly and  
perform its intended function. Check for  
alignment of moving parts, binding of moving  
parts, breakage of parts, mounting, and any  
other conditions that may affect its operation.  
A guard or other part that is damaged should  
be properly repaired or replaced by an  
authorized service center.  
39. WHEN SERVICING USE ONLY IDENTICAL  
RYOBI REPLACEMENT PARTS.  
40. SAVETHESEINSTRUCTIONS.Refertothem  
frequently and use them to instruct others  
who may use this tool. If you loan someone  
this tool, loan them these instructions also.  
WARNING:  
Some dust created by power sanding, sawing, grinding,  
drilling, and other construction activities contains  
chemicals known to cause cancer, birth defects or  
other reproductive harm. Some examples of these  
chemicals are:  
30. DO NOT USE TOOL IF SWITCH DOES NOT  
TURN IT ON AND OFF. Have switches  
replaced by an authorized service center.  
• lead from lead-based paints,  
31. DRUGS, ALCOHOL, MEDICATION. Do not  
operate this tool while under the influence of  
drugs, alcohol, or any medication.  
• crystalline silica from bricks and cement and other  
masonry products, and  
• arsenic and chromium from chemically-treated  
lumber.  
32. GUARD AGAINST KICKBACK. Kickback  
occurs when the blade stalls rapidly and the  
biscuitjoinerisdriveninthedirectionopposite  
blade rotation. Release switch immediately if  
blade binds or joiner stalls.  
Your risk from these exposures varies, depending on  
how often you do this type of work. To reduce your  
exposure to these chemicals: work in a well ventilated  
area, and work with approved safety equipment, such  
as those dust masks that are specially designed to filter  
out microscopic particles.  
33. USE ONLY 1-1/2 in. (38 mm) DIAMETER  
SPECIFIEDBLADES.Donotusebladeswith  
incorrectsizeholes.Neverusebladewashers  
or bolts that are defective, incorrect, or not  
specified.  
SAVE THESE INSTRUCTIONS  
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TABLE OF CONTENTS  
Rules For Safe Operation ...........................................................2-4  
Table of Contents / Introduction .....................................................5  
Typical Applications .......................................................................6  
Features .....................................................................................7-8  
Adjustments..............................................................................9-10  
Operation................................................................................11-16  
Maintenance...........................................................................17-19  
Optional Accessories ...................................................................19  
Troubleshooting...........................................................................20  
Service Information......................................................................22  
INTRODUCTION  
Spline joinery is one of the strongest methods of joinery  
used in woodworking. When glue is properly applied to a  
spline and to the joint area of the wood pieces being  
connected, a large surface area receives the adhesion  
properties of the glue. This forms a very strong joint.  
Football shaped wafers, called biscuits, are then placed  
inside the slots with glue and used to help line up adjoining  
surfaces. When a water based glue is used, the biscuits  
swell in the joint, making an extremely strong and firm  
bond. White glue, yellow glue, carpenters glue, hide glue,  
and aliphatic resin glue are examples of water based glues.  
Traditional spline joinery requires cutting slots with a router  
or table saw. Small, thin strips of wood must then be cut to  
fit inside the slots and act as splines.  
This bonding technique has traditionally been limited to  
making edge-to-edge joints. However, with the use of your  
new biscuit joiner, biscuits can now be easily used to  
connect butt, miter, and T-joints. Biscuit joining can be as  
strong as mortise and tenon, tongue and groove, standard  
spline, and doweled joints. In most cases the material  
around the biscuit will break before the biscuit itself will  
break. A greater surface area is exposed to glue in a biscuit  
joint, making the seams stronger.  
Newer methods of spline joinery use a plate or biscuit  
joiner to cut precise mating oval slots in adjoining boards.  
Your new biscuit joiner is a fast, simple, and accurate  
plunge cutting tool that can be used for this purpose. It can  
be used to cut slots in hardwood, softwood, plywood, par-  
ticle board, and other pressed woods.  
WARNING:  
WEAR YOUR  
The operation of any biscuit joiner can result in foreign objects being thrown into your  
eyes, which can result in severe eye damage. Before beginning power tool operation,  
always wear safety goggles or safety glasses with side shields and a full face shield  
when needed. We recommend Wide Vision Safety Mask for use over eyeglasses or  
standard safety glasses with side shields.  
SAFETY GLASSES  
FORESIGHT IS BETTER  
THAN NO SIGHT  
Look for this symbol to point out important safety precautions.  
It means attention!!! Your safety is involved.  
Page 5  
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TYPICAL APPLICATIONS  
5
1
6
4
5
°
3
4
0
9
0
°
DETAIL BISCUIT JOINER / DBJ50  
EDGE-TO-EDGE JOINTS  
BUTT JOINTS  
MITER JOINTS  
T- JOINT  
Page 6  
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FEATURES  
Your detail biscuit joiner has been designed for making fast,  
accurate, and simple plunge cuts in wood, etc. so that  
biscuits can be used to join two or more boards together.  
When used properly and only for what it is intended, this  
versatile tool will give you years of trouble-free performance.  
It is professionally engineered, but its ease of operation  
allows the amateur to produce beautiful and precise work.  
#R1 = 7/32 in. x 5/8 in.  
#R2 = 9/32 in. x 3/4 in.  
SWITCH  
To turn your biscuit joiner ON, depress the switch trigger.  
Release switch trigger to turn your biscuit joiner OFF.  
MOTOR  
Your biscuit joiner has a powerful motor with sufficient power  
to handle tough cutting jobs. It develops a no load speed of  
19,000 RPM.  
#R3 = 1/2 in. x 1 in.  
BLADE  
Your biscuit joiner has a 1-1/2 in. (38 mm) 6 tooth blade for  
cutting biscuit slots.  
BISCUITS  
See Figure 1.  
Fig. 1  
Biscuits are available in three standard sizes:  
#R1 (7/32 in. x 5/8 in.)  
APPLICATIONS  
(Use only for the purpose listed below)  
#R2 (9/32 in. x 3/4 in.)  
#R3 (1/2 in. x 1 in.)  
Cutting precise mating oval slots in hardwood, softwood,  
NOTE: Store biscuits in a dry place because they swell  
rapidly upon contact with water-based woodworking glues.  
plywood,particleboard,etc.forsplinejoineryapplications.  
ELECTRICAL CONNECTION  
REVERSIBLE FENCE FOR 45° AND 90° CUTS  
Your biscuit joiner has a precision built electric motor. It  
should be connected to a power supply that is 120 volts,  
60 Hz, AC only (normal household current). Do not  
operate this tool on direct current (DC). A substantial voltage  
drop will cause a loss of power and the motor will overheat.  
If your biscuit joiner does not operate when plugged into an  
outlet, double-check the power supply.  
Your biscuit joiner has a reversible fence. By loosening the  
height adjustment knobs, the fencecanberemovedthrough  
keyholeslots.Onceremoved,itcanberotated180° changing  
the angle of cut from 90° to 45° or vice versa. The height of  
the fence at 90° can be set between 0 to 3/4 in. from the  
center of the blade. The height of the fence at 45° can be set  
between 5/16 in. to 13/16 in. from the center of the blade.  
DEPTH ADJUSTMENT KNOB  
The fence should always be used to guide and balance your  
biscuit joiner, providing ease of operation and maintaining  
safe control.  
A spring loaded depth adjustment knob makes it possible to  
make proper settings for three standard size biscuits. Fine  
adjustments to the cutting depth can be made with a knurled  
adjustment knob and jam nut located behind the depth  
adjustment knob. Once the correct depth setting has been  
made for one biscuit size, the other two depth settings will be  
automatically set.  
NONSKID BACKING PAD  
The fence on your biscuit joiner is padded with a nonskid  
backing pad to hold it stationary against the workpiece. It  
helps prevent skidding when making cuts. It also prevents  
marring of the workpiece from biscuit joiner when cutting.  
O
A
b
p
INDICATOR MARKS  
Centerlineandlineofcutindicatormarkshavebeenprovided  
on your biscuit joiner. See Figure 2.  
WARNING:  
Your detail biscuit joiner should never be connected to power supply when you are assembling parts, making  
adjustments, assembling or removing blades, cleaning or when not in use. Disconnecting your detail biscuit joiner will  
prevent accidental starting that could cause serious personal injury.  
Page 7  
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FEATURES  
KNOW YOUR DETAIL BISCUIT JOINER  
See Figure 2.  
WARNING:  
Your biscuit joiner has been shipped completely assembled  
and ready for use. An owner's manual and warranty  
registration are also included. Inspect your new biscuit joiner  
carefully to make sure no breakage or damage has occurred  
duringshipping.Ifanypartsaredamagedormissing,contact  
your local Ryobi factory or authorized service center to  
obtain replacement parts before attempting to operate your  
biscuit joiner.  
Do not attempt to modify this tool or create accessories  
not recommended for use with this tool. Any such  
alteration or modification is misuse and could result in a  
hazardous condition leading to possible serious personal  
injury.  
Before attempting to use any tool familiarize yourself with all  
operating features and safety requirements.  
WARNING:  
Do not allow familiarity with tools to make you careless.  
Remember that a careless fraction of a second is  
sufficient to inflict severe injury.  
LINE OF  
CUT WINDOW  
CENTERLINE / LINE  
OF CUT INDICATOR  
MARK(S)  
REAR HANDLE  
WIDTH OF  
CUT SCALE  
SWITCH  
TRIGGER  
DEPTH  
ADJUSTMENT  
KNOB  
KNURLED  
ADJUSTMENT  
KNOB  
JAM  
NUT  
HEIGHT  
SETTING SCALE  
FENCE  
5
16  
45°  
3
4
5
16  
3
1
2
45°  
0
3
4
90°  
1
2
3
REAR  
BASE  
0
FRONT  
BASE  
90°  
HEIGHT  
ADJUSTMENT  
KNOBS (2)  
BOTTOM  
SHOE  
HEIGHT  
INDICATOR MARK  
NONSKID  
BACKING PAD  
Fig. 2  
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ADJUSTMENTS  
WARNING:  
If any parts are missing, do not operate tool until the  
DEPTH  
INDICATOR  
MARK  
missing parts are replaced. Failure to do so could result  
in possible serious personal injury.  
ROTATE TO  
DESIRED SETTING  
1, 2, OR 3  
DEPTH OF CUT ADJUSTMENTS  
Your biscuit joiner can be adjusted to three standard  
cuttingdepthstoaccommodatethreestandardsizebiscuits  
— #R1, #R2, and #R3. Adjustments are made by engaging  
slots on depth adjustment knob with tabs on rear base. For  
example, when using a #R1 size biscuit, rotate the depth  
adjustment knob until the slot marked 1 aligns with the  
depth indicator mark on the rear base. When using a #R2  
size biscuit, rotate the depth adjustment knob until the slot  
marked 2 aligns with the depth indicator mark on the rear  
base, and when using a #R3 size biscuit rotate the depth  
adjustment knob until the slot marked 3 aligns with the  
depth indicator mark on the rear base. See Figure 3.  
3
PULL AND HOLD TO  
ROTATE DEPTH  
ADJUSTMENT KNOB  
2
REAR  
BASE  
RELEASE TO APPLY  
PRESSURE AGAINST DEPTH  
ADJUSTMENT KNOB  
KNURLED  
ADJUSTMENT  
KNOB  
TABS  
TO SET DEPTH ADJUSTMENT KNOB  
Unplug your detail biscuit joiner.  
JAM  
NUT  
WARNING:  
Failure to unplug biscuit joiner could result in accidental  
DEPTH  
ADJUSTMENT  
KNOB  
SLOT  
starting causing possible serious personal injury.  
Fig. 3  
Pull knurled adjustment knob and jam nut in the direction  
of the arrow shown in figure 3.  
NOTE: Knob and jam nut are spring loaded, therefore  
pulling them in the direction of the arrow shown puts  
pressure on the spring and releases pressure from the  
depth adjustment knob.  
Rotate depth adjustment knob until desired slot setting  
aligns with tabs on rear base — 1, 2, or 3.  
Nextreleaseknurledadjustmentknobandjamnutapplying  
pressure from spring on depth adjustment knob.  
3
2
Make a test cut in a scrap piece of wood. Fit the correct size  
biscuit into biscuit slot. If biscuit slot is too deep or too  
shallow, fine adjustments to the depth setting can be made  
by loosening knurled adjustment knob and making fine  
adjustmentswiththejamnut. Turningjamnutforwardwillcut  
shallow biscuit slots. Turning jam nut backwards will cut  
deeper biscuit slots. The biscuit slot should be deep enough  
to allow slightly more than one-half of the biscuit into the slot.  
This extra room allows for proper alignment of the wood  
being joined.  
TURN FORWARD  
FOR SHALLOW  
BISCUIT SLOTS  
TURN BACKWARDS FOR  
DEEPER BISCUIT SLOTS  
KNURLED ADJUSTMENT KNOB USED AS A LOCK NUT.  
JAM NUT USED TO MAKE FINE ADJUSTMENTS. Fig. 4  
Turn jam nut forward for a more shallow cut, or  
backwards for a deeper cut.  
TO MAKE FINE ADJUSTMENTS  
See Figure 4.  
Once desired depth of cut is reached, hold jam nut so that  
it will not move out of adjustment. Next, tighten knurled  
adjustment knob against jam nut.  
Unplug your detail biscuit joiner.  
Recheck depth setting by making a test cut in a scrap  
piece of wood. Also periodically check depth setting for  
accuracy. See Figure 4.  
Loosen knurled adjustment knob. This knob is used as a  
lock nut only. Loosen by twisting it in the opposite direc-  
tion away from jam nut.  
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ADJUSTMENTS  
FENCE HEIGHT ADJUSTMENT  
FENCE  
See Figure 5.  
HEIGHT  
ADJUSTMENT  
KNOB(S)  
The fence on your biscuit joiner can be moved up and down  
to adjust the position of the blade in relation to the top of the  
workpiece. A scale on both sides of the front base indicates  
height settings for both 45° and 90° angles. The fence and  
height indicator mark can be positioned from 5/16 in. to 13/16  
in. from the center of the blade for 45° angles. It can be  
positioned from 0 to 3/4 in. from the center of the blade for 90°  
angles. Scale marks are in increments of 1/16 in.  
5
16  
45°  
3
4
0
90°  
TO ADJUST HEIGHT SETTING  
See Figure 5.  
Unplug your detail biscuit joiner.  
HEIGHT  
SETTING SCALE  
TO LOWER  
FENCE  
WARNING:  
Fig. 5  
Failure to unplug your detail biscuit joiner could result in  
accidental starting causing possible serious personal  
injury.  
Loosen the two height adjustment knobs.  
Pull the fence forward and slide it up or down until the  
height indicator mark is aligned with the desired dimen-  
sion on the scale.  
5
16  
45°  
3
4
HEIGHT  
ADJUSTMENT  
KNOBS  
NOTE: Slots in the front base align with a tab on the  
backside of the fence. See Figure 6. This alignment  
keeps the fence square at each height setting.  
3
1
2
0
90°  
1
2
3
(1) PULL  
FORWARD  
Tighten height adjustment knobs securely.  
FRONT  
BASE  
FENCE ROTATION / ANGLE ADJUSTMENT  
FENCE  
See Figure 6.  
(2) SLIDE  
DOWN  
The fence on your biscuit joiner can be rotated 180° and set  
at either 45° or 90° angles.  
FENCE ORIENTATION  
FOR 45° ANGLES  
TO ROTATE FENCE / CHANGE ANGLE SETTING  
See Figure 6.  
Unplug your detail biscuit joiner.  
HEIGHT  
ADJUSTMENT  
KNOB BOLT(S)  
WARNING:  
Failure to unplug your detail biscuit joiner could result in  
accidental starting causing possible serious personal  
injury.  
Loosen the two height adjustment knobs.  
Pullthefenceforwardandslideitdownthefrontbaseuntil  
SLOTS  
TABS  
it can be removed through the key hole slots.  
Rotate the fence 180°.  
Reinstall the fence on the front base. Place height adjust-  
ment knob bolts in key hole slots and align bolt heads with  
the slots on back of front base.  
KEY  
HOLE  
SLOTS  
FRONT  
BASE  
SLOT(S)  
Slide fence up the front base to desired depth of cut.  
FENCE ORIENTATION  
FOR 90° ANGLES  
Tighten height adjustment knobs securely. See Figure 6.  
Fig. 6  
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OPERATION  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields when operating tools. Failure to do so could  
result in objects being thrown into your eyes, resulting in  
possible serious injury.  
INDICATOR  
MARK(S)  
A variety of spline joints can be made using your biscuit  
joiner. The number and size biscuits needed for each joint  
depends on the thickness of the wood and the length of the  
joint. In general, the small #R1 biscuits should be used for  
miter cuts in small, thin materials. The larger biscuits should  
be used for edge-to-edge joinery.  
1
1
2
2
3
3
When joining thick materials, stack two biscuits, one above  
the other. For example, joining 2 in. x 4 in. dressed lumber.  
See Figure 9. When joining even thicker materials, use  
additional biscuits, stacked above each other.  
LINE OF  
CUT WINDOW  
CENTERLINE  
MARK(S)  
TOP VIEW OF DETAIL BISCUIT JOINER  
Whenmakingedge-to-edgejointsthemorebiscuitsyouuse,  
the stronger the joint will be.  
Fig. 7  
The following sections illustrate how to make various spline  
joints using your biscuit joiner.  
CENTERLINE  
MARKS  
EDGE-TO-EDGE JOINTS  
See Figures 7 and 8.  
Edge-to-edge joinery is one of the most basic and easiest  
joints to construct. In general, two basic adjustments have  
to be made for all biscuit joinery applications. One is the  
depth of cut and the other is the location of the cut.  
BISCUIT(S)  
HOW TO MAKE EDGE-TO-EDGE JOINTS  
Unplug your detail biscuit joiner.  
Prepare the workpieces by laying them side by side on a  
workbench in the order in which they will be assembled.  
BISCUIT SLOT(S)  
Using a square, determine the location of each biscuit  
spline joint and mark the center of each joint by drawing  
a line across each workpiece. Mark the edges 1 in. from  
the ends of workpieces. The joint will be stronger if you  
use multiple biscuits placed close together.  
Fig. 8  
EDGE-TO-EDGE JOINTS  
Place the fence against the board and align the indicator  
marks on the fence with the centerline mark(s) on the  
board. See Figure 7.  
Set fence angle at 90°.  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
Loosen height adjustment knobs, then pull and slide the  
fence up or down until the indicator point is aligned with  
the desired dimension on the scale. REMEMBER: The  
scale indicates the height of the fence from the center of  
blade.  
When the base assembly bottoms out against the depth  
ofcutadjustmentknobsetting,pullbackreleasingpressure  
on the spring. Blade will retract from biscuit slot.  
Tighten height adjustment knobs securely.  
Repeat this procedure for all desired biscuit slots.  
Select the correct depth of cut setting to match the biscuit  
size you are planning to use. We suggest that you make  
a test cut in a scrap piece of wood from the same  
workpiece if possible.  
Once all biscuit slots have been cut, place a biscuit in  
each joint and dry assemble the workpieces. Make sure  
each joint lines up and fits.  
Clamp workpiece securely so that it will not move during  
Finally, disassemble the workpieces and place a bead of  
glue in each slot. Also, spread a bead of glue over the  
entire surface of the joint. Reinsert the biscuits and  
assemble the workpieces. See Figure 8.  
the cut.  
Plug your biscuit joiner into power supply and prepare to  
make your first cut. Grasp and hold your biscuit joiner  
securely with both hands.  
Clamp workpieces together until the glue sets up.  
Page 11  
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OPERATION  
BUTT JOINTS  
See Figure 9.  
A butt joint is one of the weakest joints in woodworking.  
This type of joint is mating the end grain of one board with  
the edge grain of another. The bonding of glue on this type  
of surface is poor. However, by using biscuits you can  
create a very strong joint that gives a mortise-and-tenon  
effect.  
BISCUIT  
SLOT(S)  
BISCUIT(S)  
HOW TO MAKE BUTT JOINTS  
Unplug your detail biscuit joiner.  
Place the two pieces of wood to be joined on a level  
workbench. Align them against each other in the  
arrangement in which they will be assembled.  
CENTERLINE  
MARK(S)  
Using a square, determine the location of each biscuit  
spline joint and mark the center of each joint by drawing  
a line across the edges of the two boards.  
MULTIPLE  
BISCUITS STACKED  
Set fence angle at 90°.  
Loosen height adjustment knobs, then pull and slide the  
fence up or down until the indicator point is aligned with  
the desired dimension on the scale. REMEMBER: The  
scale indicates the height of the fence from the center of  
the blade.  
BUTT JOINTS  
Fig. 9  
OFFSET BUTT JOINT  
Tighten height adjustment knobs securely.  
BISCUIT  
SLOT  
Select the correct depth of cut setting to match the biscuit  
size you are planning to use. We suggest that you make  
a test cut in a scrap piece of wood from the same  
workpiece if possible.  
BISCUIT  
Clamp workpiece securely so that it will not move during  
the cut.  
Plug your biscuit joiner into power supply and prepare to  
make your first cut. Grasp and hold your biscuit joiner  
securely with both hands.  
Place the fence against the board and align the indicator  
marks on the fence with the centerline mark(s) on the  
board.  
CENTERLINE  
MARK(S)  
Fig. 10  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
OFFSET BUTT JOINTS  
When the base assembly bottoms out against the depth  
ofcutadjustmentknobsetting,pullbackreleasingpressure  
on the spring. Blade will retract from biscuit slot.  
See Figure 10.  
The rails of a table or workbench are often offset from the  
front of the table legs. When offsets are required, it is  
necessary to cut the slots in the rails first, then re-adjust the  
fence to cut the slots in the legs.  
Repeat this procedure for cutting the slot in the mating  
workpiece.  
Once all biscuit slots have been cut, place a biscuit in  
each joint and dry assemble the workpieces. Make sure  
each joint lines up and fits.  
Keepingthisoneexceptioninmind, theprocedureforcutting  
offset butt joints is identical to the procedure for cutting butt  
joints.  
Finally, disassemble the workpieces and place a bead of  
glue in each slot. Also, spread a bead of glue over the  
entire surface of the joint. Reinsert the biscuits and  
assemble the workpieces. See Figure 9.  
For example — If a 1/4 in. offset is desired, you would mark  
the centerlines for cutting a butt joint as mentioned in the  
proceduresforcuttingbuttjoints, andcuttheslotsintheends  
of the rails. Next you would raise the fence 1/4 in. to the  
desired offset and cut the slots in the legs.  
Clamp workpieces together until the glue sets up.  
Page 12  
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OPERATION  
T- JOINTS  
See Figures 11-15.  
CENTERLINE  
MARK(S)  
A T-joint is used when the end of a board is joined to the  
face of another board as shown in figure 11. Attaching  
shelves to bookcases and inner support braces to frames  
are typical applications. Actual cutting of a T-joint is as  
simple as any other cut. However, it is critical that you mark  
the centerlines, mark the intersection points for each slot,  
and cut each slot correctly. See Figure 11.  
BISCUIT(S)  
HOW TO MAKE T- JOINTS  
Unplug your detail biscuit joiner.  
Place the two pieces of wood to be joined on a level  
workbench as shown in figure 12. The inside face of the  
vertical board should be facing up.  
BISCUIT SLOT(S)  
Determine the location of each biscuit joint and mark the  
centerlines on each board as shown. The centerlines for  
both boards must line-up with each other. Measure  
carefully, these measurements must be accurate and  
precise. TIP: Measure twice and cut once. In addition to  
the centerlines lining up, the spacing of the biscuit slots  
from side-to-side must also match.  
T- JOINT  
Fig. 11  
HORIZONTAL BOARD  
BISCUIT SLOT  
CENTERLINE MARK(S)  
BOARD  
CENTERLINES  
Plug your biscuit joiner into power supply and cut slots in  
all boards that require end slots. See Figure 13. Follow  
proceduresexplainedin"Edge-To-EdgeJoints". Rotate  
fence angle to 90°, set fence height at desired dimension  
on the scale, select the correct depth of cut setting for the  
biscuit size you plan to use, clamp workpiece securely,  
then cut each slot at the marked centerline intersection.  
Next, you must remove the fence from your biscuit joiner  
in order to cut slots into the face of the vertical board.  
TO REMOVE FENCE:  
Unplug your detail biscuit joiner.  
Loosen height adjustment knobs, pull fence forward and  
slide it down the front base until it can be removed through  
the key hole slots. See Figure 14. Next, select the correct  
depth of cut setting for the biscuit size you plan to use,  
clampworkpiecesecurely,andcuteachslotatthemarked  
centerline intersection.  
VERTICAL BOARD  
HORIZONTAL BOARD  
Fig. 12  
WARNING:  
When the fence is removed, the cutter may be exposed.  
Use extreme caution to avoid serious personal injury.  
5
6
1
1
4
2
5
°
3
3
4
0
90  
°
Place your biscuit joiner on vertical board as shown in  
figure 15 and align indicator marks on bottom shoe with  
centerline on vertical board.  
Place a straight piece of wood on the vertical board and  
securelyclampitflushagainstthebottomshoe.Thispiece  
of wood is used for a fence or guide. It must be square with  
the sides of the vertical board and parallel with the  
centerline.  
CLAMP  
TO CUT END SLOTS IN  
HORIZONTAL BOARDS  
Aligncenterlineonbottomofshoewithmarkedintersection  
Fig. 13  
for biscuit slot.  
Page 13  
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OPERATION  
T-JOINTS (Continued)  
Plug your biscuit joiner into power supply and prepare to  
cut slot.  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
Whenthebaseassemblybottomsoutagainstthedepthof  
cut adjustment knob setting, pull back releasing pressure  
on the spring. Blade will retract from biscuit slot.  
5
16  
45°  
Repeat this procedure for cutting all required slots in  
3
4
vertical boards.  
0
Once all slots have been cut, place a biscuit in each joint  
and dry assemble the workpieces. Make sure each joint  
lines up and fits.  
90°  
REMOVE FENCE TO MAKE  
FACE CUTS IN VERTICAL BOARDS  
Fig. 14  
Finally, disassemble the workpieces and place a bead of  
glue in each slot. Also, spread a bead of glue over the  
entire surface of the joint. Reinsert the biscuits and  
assemble the workpieces. See Figure 11.  
BOTTOM SIDE OF BOTTOM SHOE  
CENTERLINE MARK  
ON WORKPIECE  
INDICATOR  
MARK  
Clamp workpieces together until the glue sets up.  
Upon completion of a T-joint cutting operation, reinstall  
the fence on the front base by reversing "TO REMOVE  
FENCE" procedure. Place height adjustment knob bolts in  
key hole slots and align bolt heads with the slots on back of  
front base. Slide fence up the front base to desired depth of  
cut. Tighten height adjustment knobs securely.  
HORIZONTAL  
BOARD  
MITER JOINTS  
See Figures16-18.  
There are two types of miter joints that can be made using  
biscuits: flat miters and edge miters. Flat miters are used  
when making picture frames. Edge miters are used when  
making boxes or things where you don't want to show the  
end grain of the wood. Butt joints show the end grain in  
wood.  
HOW TO MAKE FLAT MITER JOINTS  
Unplug your detail biscuit joiner.  
WARNING:  
Failure to unplug your detail biscuit joiner could result in  
accidental starting causing possible serious personal injury.  
VERTICAL  
BOARD  
CLAMP  
Fig. 15  
TO CUT SLOTS IN VERTICAL BOARDS  
Place the pieces of wood to be joined on a level  
CENTERLINE  
MARK(S)  
workbench as shown in figure 16.  
Using a combination square, draw a line through the  
center of each joint perpendicular to the mitered edges.  
BISCUIT  
SLOT  
Setfenceangleat90°,setfenceheightatdesireddimension  
on the scale, select the correct depth of cut setting for the  
biscuitsizeyouplantouse,andclampworkpiecesecurely.  
Align indicator mark on fence with the centerline on the  
workpiece.  
Plug your biscuit joiner into power supply and prepare to  
BISCUIT  
cut slot.  
FLAT MITER JOINTS  
Fig. 16  
Page 14  
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OPERATION  
FLAT MITER JOINTS (Continued)  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
Whenthebaseassemblybottomsoutagainstthedepthof  
cut adjustment knob setting, pull back releasing pressure  
on the spring. Blade will retract from biscuit slot.  
BISCUIT  
SLOT  
Repeat this procedure for cutting mating slot and all  
required miter joint slots.  
Once all slots have been cut, place a biscuit in each joint  
and dry assemble the workpieces. Make sure each joint  
lines up and fits.  
Finally, disassemble the workpieces and place a bead of  
glue in each slot. Also, spread a bead of glue over the  
entire surface of the joint. Reinsert the biscuits and  
assemble the workpieces. See Figure 16.  
CENTERLINE  
MARK(S)  
BISCUIT  
EDGE MITER JOINTS  
Fig. 17  
Clamp workpieces together until the glue sets up.  
CUTTING EDGE MITER SLOT  
FROM LONG SIDE OF WORKPIECE  
HOW TO MAKE EDGE MITER JOINTS  
Unplug your detail biscuit joiner.  
Placethepiecesofwoodtobejoinedonalevelworkbench  
as shown in figure 17.  
Mark centerline of the joint on each board.  
5
16  
Whenmakingedgemiterjointswithworkpiecesthathave  
different thicknesses, clamp securely to a workbench  
with the long sides up. This will assure that the outside  
surfaces will match. See Figure 18.  
45  
°
3
4
0
90  
°
Set fence angle at 45°.  
Slide the fence up or down until fence height is at desired  
setting.  
Tighten height adjustment knobs securely.  
Place your biscuit joiner on workpiece with the fence  
resting on the long side of workpiece as shown in figure  
18. The front base should be against the mitered edge of  
the workpiece.  
Fig. 18  
Recheck fence height setting to make sure it will not cut  
Repeat this procedure for cutting mating slot and all  
through the workpiece.  
required miter joint slots.  
Align indicator mark on fence with the centerline on the  
workpiece. Make sure the front base is pressed flat  
against the mitered edge of the workpiece.  
Once all slots have been cut, place a biscuit in each joint  
and dry assemble the workpieces. Make sure each joint  
lines up and fits.  
Plug your biscuit joiner into power supply and prepare to  
Finally, disassembleworkpiecesandplaceabeadofglue  
in each slot. Also, spread a bead of glue over the entire  
surface of the joint. Reinsert the biscuits and assemble  
workpieces. See Figure 17.  
cut slot.  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
Clamp workpieces together until the glue sets up.  
When the base assembly bottoms out against the depth  
of cut adjustment knob setting, pull back releasing pres-  
sure on the spring. Blade will retract from biscuit slot.  
Page 15  
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OPERATION  
HINGE JOINTS  
See Figure 19.  
Hinge joints are used when joining two boards using hinges  
supplied in one of Ryobi's optional hinge kits. Jewelry boxes,  
doors on clocks, recipe boxes, etc. are typical applications.  
HINGE  
SLOT(S)  
HOW TO MAKE HINGE JOINTS  
Unplug your detail biscuit joiner.  
Prepare the workpieces to be joined by laying them side  
by side on a workbench in the order in which they will be  
hinged.  
HINGE  
Determine the location of each hinge joint and mark the  
centerofeachjointbydrawingalineacrosseachworkpiece.  
Set fence angle at 90°.  
Loosen height adjustment knobs, then pull and slide the  
fence down the scale until the height indicator mark is set  
atzerodepthofcut. REMEMBER:Thescaleindicatesthe  
height of the fence from the center of the blade, which is  
approximately .050 of an inch.  
FASTENERS  
Tighten height adjustment knobs securely.  
Select the #3 depth of cut setting. We suggest that you  
make a test cut in a scrap piece of wood from the same  
workpiece if possible.  
HINGE  
Fig. 19  
Clamp workpiece securely so that it will not move during  
the cut.  
Plug your biscuit joiner into power supply and prepare to  
make your first cut. Grasp and hold your biscuit joiner  
securely with both hands.  
EXTENSION CORDS  
Theuseofanyextensioncordwillcausesomelossofpower.  
Tokeepthelosstoaminimumandtopreventtooloverheating,  
use an extension cord that is heavy enough to carry the  
current the tool will draw.  
Place the fence against the board and align the indicator  
marks on the fence with the centerline mark(s) on the  
board. See Figure 19.  
A wire gage size (A.W.G.) of at least 16 is recommended for  
an extension cord 50 feet or less in length. When working  
outdoors, use an extension cord that is suitable for outdoor  
use. The cord's jacket will be marked WA.  
Depress the switch trigger and let the motor build to its  
maximumspeed,thengraduallypushbiscuitjoinerforward  
to extend the blade into the wood.  
When the base assembly bottoms out against the depth  
ofcutadjustmentknobsetting,pullbackreleasingpressure  
on the spring. Blade will retract from hinge slot.  
WARNING:  
Check extension cords before each use. If damaged,  
replace immediately. Never use tool with a damaged  
cord since touching the damaged area could cause  
electrical shock resulting in serious injury.  
Repeat this procedure for all desired hinge slots.  
Once all hinge slots have been cut, place a hinge in each  
slot and dry assemble the workpieces. Make sure each  
slot lines up and fits.  
Finally, assemble the hinges to the workpieces and  
secure with the fasteners supplied.  
CAUTION:  
Keep extension cords away from the cutting area and  
position the cord so that it will not get caught on lumber,  
tools, etc. during cutting operations.  
LUBRICATION  
All of the bearings in this tool are lubricated with a sufficient  
amount of high grade lubricant for the life of the unit under  
normaloperatingconditions.Therefore,nofurtherlubrication  
is required.  
Page 16  
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MAINTENANCE  
BLADE REPLACEMENT  
See Figures 20– 22.  
SCREWS (4)  
After extended use, the blade on your biscuit joiner may  
become dull. If you accidentally hit a nail or other blunt  
object, it will dull or break the blade. These situations  
require replacing the blade.  
BOTTOM  
SHOE  
HOW TO REPLACE THE BLADE  
Unplug your detail biscuit joiner.  
WARNING:  
Failure to unplug your detail biscuit joiner could result in  
2
3
accidental starting causing possible serious personal injury.  
Placeyourbiscuitjoinerupsidedownonaworkbenchand  
removethebottomshoescrews(4)andbottomshoe. See  
Figure 20.  
Fig. 20  
Place a #1 Phillips screwdriver or 3/16 in. diameter pin  
#1 PHILLIPS SCREWDRIVER  
OR 3/16 in. DIAMETER PIN  
between the blade and front base. See Figure 21.  
Placeoneofthebladeteethagainstthescrewdriverorpin  
and lock blade preventing it from rotating.  
BLADE  
Using a 9/64 in. hex key, remove blade screw.  
FRONT BASE  
NOTE: Turn blade screw counterclockwise to remove.  
See Figure 22.  
Remove outer blade washer and blade.  
Clean wood particles and resin from blade washer and all  
surrounding parts.  
2
WARNING:  
3
If inner blade washer has been removed, replace it  
before installing new blade. Failure to do so could cause  
an accident since blade screw will not tighten properly.  
Fig. 21  
Place inner blade washer on gear spindle. See Figure 22.  
Placenewbladeontogearspindleandalignflatsonblade  
BLADE SCREW  
OUTER  
BLADE WASHER  
GEAR  
SPINDLE  
FLATS  
with flats on gear spindle.  
Secure with outer blade washer and blade screw.  
BLADE  
Place a #1 Phillips screwdriver or 3/16 in. diameter pin  
BLADE  
FLATS  
between the blade and front base. See Figure 21.  
Placeoneofthebladeteethagainstthescrewdriverorpin  
and lock blade preventing it from rotating.  
INNER  
BLADE  
WASHER  
NOTE: Blade teeth point toward the right of your biscuit  
joiner when held in normal operating position. An arrow  
on the bottom shoe also indicates direction of blade  
rotation. See Figure 20.  
Tighten blade screw securely.  
NOTE: Turn blade screw clockwise to tighten.  
Reassemble bottom shoe.  
GEAR  
SPINDLE  
2
3
Replace screws (4) and tighten securely.  
Fig. 22  
Page 17  
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MAINTENANCE  
FRONT BASE  
WARNING:  
TO  
REMOVE  
SCREWDRIVER  
When servicing, use only identical Ryobi replacement  
parts. Use of any other part may create a hazard or  
cause product damage.  
2
CLEANING BASE ASSEMBLY  
See Figures 23-25.  
3
SCREW  
HOLE  
After extended use, wood particles and resin may build up  
inside the base assembly of your biscuit joiner and clog the  
path for wood particles going through dust exhaust opening.  
Wood particles packing up in this area makes cutting biscuit  
slots more difficult.  
HOW TO CLEAN BASE ASSEMBLY  
Unplug your detail biscuit joiner.  
Fig. 23  
WARNING:  
Failure to unplug your detail biscuit joiner could result in  
accidental starting causing possible serious personal injury.  
Place your biscuit joiner upside down on a workbench and  
remove the bottom shoe screws (4) and bottom shoe.  
NOTCH(ES)  
Remove the blade. See "Blade Replacement" section.  
With your biscuit joiner still upside down on a workbench,  
remove front base screws (2). See Figure 23.  
Pull front base in the direction shown by the arrow in figure  
REAR BASE  
23 and remove.  
TAB(S)  
Using a pair of needle nose pliers, stretch and release  
SPRING(S)  
BEARING  
PLATE  
springs from tabs on bearing plate. See Figure 24.  
Fig. 24  
Lift adjustment rod away from bearing plate and remove  
rear base.  
ADJUSTMENT  
ROD  
With front and rear base assemblies removed, place your  
biscuit joiner upside down on a workbench and clean  
woodparticlesandresinfrombearingplateandsurrounding  
areas. NOTE: Also clean the blade, blade washers, etc.  
REAR  
BASE SLOT  
CAUTION:  
Blade tips are sharp. Be carefull not to cut yourself  
when cleaning.  
Cleanwoodparticlesandresinfromslotsandsurrounding  
areas on front and rear base. See Figure 25. Apply a thin  
coat of general purpose grease in slots or on bearing plate  
where base slides.  
REAR  
BASE SLOT  
Replace rear base. Position adjustment rod in its proper  
FRONT  
BASE SLOT  
place as shown in figure 24.  
Secure rear base in place with the two springs. Hook one  
end of each spring in notch on each side of rear base.  
Using needle nose pliers, stretch each spring and hook it  
over tabs on bearing plate.  
FRONT  
BASE SLOT  
Fig. 25  
Reinstall blade. Tighten blade screw securely.  
Reassemble bottom shoe. Tighten screws (4) securely.  
Reassemble front base. Replace screws and tighten se-  
curely.  
Page 18  
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MAINTENANCE  
Avoid using solvents when cleaning plastic parts. Most  
When electric tools are used on fiberglass it has been  
found that they are subject to accelerated wear and possible  
premature failure, as the fiberglass chips and grindings are  
highly abrasive to bearings, brushes, commutator, etc.  
Consequently it is not recommended that this tool be used  
for extended work on any fiberglass material. During any  
use on fiberglass it is extremely important that the tool is  
cleaned frequently by blowing with an air jet.  
plastics are susceptible to damage from various types of  
commercial solvents and may be damaged by their use.  
Use clean cloths to remove dirt, dust, oil, grease, etc.  
WARNING:  
Do not at any time let brake fluids, gasoline, petroleum-  
based products, penetrating oils, etc. come in contact  
with plastic parts. They contain chemicals that can  
damage, weaken or destroy plastic.  
WARNING:  
Always wear safety goggles or safety glasses with side  
shields during power tool operation or when blowing  
dust. If operation is dusty, also wear a dust mask.  
OPTIONAL ACCESSORIES  
The following recommended accessories are current and were available at the time this manual was printed:  
Item No.  
Description  
Quantity  
4600411  
4600412  
4600413  
4600415  
4600435  
4600450  
4600451  
Size #R1 Accu Biscuits™, Canister Pack  
Size #R2 Accu Biscuits™, Canister Pack  
Size #R3 Accu Biscuits™, Canister Pack  
Size #R3 Value Pack  
110 Pcs.  
100 Pcs.  
90 Pcs.  
Total 1000 Pcs.  
1
High Speed Steel Blade  
Brass Hinge Kit  
6 Pcs.  
Chrome Hinge Kit  
6 Pcs.  
HELPFUL HINTS  
Always clamp workpiece securely before cutting.  
A safe operator is one who thinks ahead.  
Study all safety rules and do the job safely.  
NEVER place your hands in jeopardy.  
Always wear eye protection when cutting slots.  
Make certain clamps can’t loosen while in use.  
Test difficult set-ups on scrap—Don’t waste lumber.  
Plan each operation before you begin.  
Makeset-upadjustmentscarefully.Thendoublecheck.  
Measure twice and cut once.  
Always dry assemble your project before gluing it  
together.  
Provide for smoother operation by cleaning your bis-  
cuit joiner frequently. Shake biscuit joiner or blow with  
an air jet to remove wood particle build-up.  
Forloosefitsituations,wetbiscuitstomakethemswell.  
The more biscuits used, the stronger the joint will be.  
DO NOT ABUSE POWER TOOLS. Abusive practices  
can damage tool as well as workpiece.  
Keep blade clean. When the blade becomes dull,  
replace it.  
THINK SAFETY BY THINKING AHEAD.  
Don’t let familiarity make you careless.  
Page 19  
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TROUBLESHOOTING  
PROBLEM  
SOLUTION  
1. Biscuits do not fit slots. Biscuits not fitting slots may  
also cause misalignment of boards being joined.  
A. Biscuit slots are too deep or too shallow. Make fine  
adjustments to depth setting. See "TO MAKE FINE  
ADJUSTMENTS" section on page 9.  
B. Biscuitthicknessmaybeoutoftolerance.Compress  
biscuits in a vise if they are too thick.  
C. Check to see if biscuits are the correct size for the  
size slots that have been cut: #1, #2, or #3.  
D. Checktoseeifbiscuitshavegottenwetandswollen.  
E. If biscuits fit loose in slots, wet them to take up the  
loose fit.  
2. Wood particles begin to backup on front of unit.  
A. Dust exhaust may be clogged preventing wood  
particles from going through dust exhaust opening.  
Remove bottom shoe and clean blade, bearing  
plate, base assembly slots, and surrounding areas.  
See "CLEANING BASE ASSEMBLY" section on  
page 18.  
3. Blade becomes difficult to push in when cutting  
slots. Blade does not retract properly when cutting  
slots.  
A. Wood particles and resin have built up on base  
assembly slots and surrounding areas. Remove  
front and rear base assemblies and clean blade,  
bearing plate, base assembly slots and surrounding  
areas. Apply a thin coat of general purpose grease  
in slots or on bearing plate where base slides. See  
"CLEANING BASE ASSEMBLY" section on page  
18.  
4. Cutting performance is poor and there is a loss of  
power or stalling of motor when cutting slots.  
A. Blade is dull. Replace blade. See "BLADE  
REPLACEMENT" section on page 17.  
B. Resin has built up on blade. Remove blade and  
clean it with gum and pitch remover. See "BLADE  
REPLACEMENT" section on page 17 for blade  
removing instructions. Once clean, follow "BLADE  
REPLACEMENT" instructions to replace the blade.  
Page 20  
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NOTES  
Page 21  
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OWNER'S OPERATING MANUAL  
DETAIL BISCUIT JOINER / DBJ50  
DOUBLE INSULATED  
EXTENSION CORD CAUTION  
**Ampere rating  
(on tool data plate) 0-2.0  
2.1-3.4 3.5-5.0 5.1-7.0 7.1-12.0 12.1-16.0  
When using a power tool at a considerable distance from a power  
source, be sure to use an extension cord that has the capacity to  
handlethecurrentthetoolwilldraw. Anundersizedcordwillcause  
a drop in line voltage, resulting in overheating and loss of power.  
Use the chart to determine the minimum wire size required in an  
extension cord. Only round jacketed cords should be used.  
Cord Length  
Wire Size (A.W.G.)  
25'  
50'  
16  
16  
16  
16  
16  
16  
16  
16  
14  
16  
14  
12  
14  
14  
10  
14  
12  
100'  
When working with a tool outdoors, use an extension cord that is  
designed for outside use. This is indicated by the letters "WA" on  
the cord's jacket.  
CAUTION: Keep the extension cord clear of the working  
area. Position the cord so that it will not get caught on lumber,  
tools or other obstructions while you are working with a power  
tool.  
Before using any extension cord, inspect it for loose or exposed  
wires and cut or worn insulation.  
**Used on 12 gauge - 20 amp circuit.  
• SERVICE  
Now that you have purchased your tool, should a need ever exist for repair parts or service,  
simplycontactyournearestRyobiAuthorizedServiceCenter. Besuretoprovideallpertinent  
facts when you call or visit. Please refer to the Service Center insert or call 1-800-525-2579  
in the United States or 1-800-265-6778 in Canada for your nearest Authorized Service  
Center.  
• MODEL NO.  
The model number of your tool will be found on a plate attached to the motor housing. Please  
record the model number and serial number in the space provided below.  
MODEL NUMBER DBJ50  
SERIAL NUMBER  
RYOBI TECHNOLOGIES INC.  
1428 Pearman Dairy Road Anderson SC 29625  
RYOBI TECHNOLOGIES INC.  
P.O. Box 910  
Post Office Box 1207  
Anderson SC 29622-1207  
Cambridge, Ontario N1R 6K2  
Phone 1-800-265-6778  
Phone 1-800-525-2579  
972000-311  
10-00  
PrintedinU.S.A.  
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