SHINDAIWA OWNER’S/
OPERATOR'S MANUAL
P231 POLE PRUNER
Shindaiwa Inc.
P.O. Box 2810
Tualatin, Oregon 97062
Telephone: 503 692-3070
FAX:
503 692-6696
WARNING!
Minimize the risk of injury to
yourself and others! Read this
manual and familiarize yourself
with the contents. Always wear
eye and hearing protection
when operating this unit.
Shindaiwa Kogyo Co., Ltd.
Head Office: 6-2-11 Ozuka
Nishi, Asaminami-ku
Hiroshima, 731-3167, Japan
Telephone: 81-82-849-2220
FAX:
81-82-849-2481
ᮊ2002 Shindaiwa, Inc.
Part Number 63888-94010
Printed in Japan
Rev. 2/02
Specifications subject to change without notice.
Part Number 63888-94010
Rev. 2/02
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Attention Statements
Safety Precautions
Emission System Warranty Statement
Your Warranty Rights and
Throughout this manual are special
attention statements.
Obligations
Manufacturer’s Warranty
Coverage
WARNING!
The California Air Resources Board, the
U.S. Environmental Protection Agency
and Shindaiwa Kogyo Co., Ltd. are
pleased to explain the emission control
system warranty on your new small off-
road (non-road) engine.
In California, new small off-road
engines must be designed, built, and
equipped to meet the State’s stringent
anti-smog standards. In other states,
new 1997 and later non-road engines
must meet the Federal EPA’s strin-
gent anti-smog standards. Shindaiwa
Kogyo Co., Ltd. must warrant the
emission control system on your small
off-road engine for the periods of time
listed below, provided there has been
no abuse, neglect, or improper
maintenance of your small off-road
engine.
THE PRUNER IS NOT INSULATED
AGAINST ELECTRICAL SHOCK!
Approaching or contacting electri-
cal line with the pruner could
cause death or serious injury.
Keep the pruner at least 33 feet
(10 meters) away from electrical
lines or branches that contact
electrical lines.
When sold within the U.S., this
engine’s emission control system is
warranted for a period of two (2) years
from the date this product is first
delivered to the original retail pur-
chaser.
DANGER!
A statement preceded by the
triangular attention symbol and
the word “DANGER” contains
information that should be acted
upon to prevent serious injury
or death.
During the warranty period,
Shindaiwa Kogyo Co., Ltd. will, at
their option, repair or replace any
defective emission-related component
on this engine. During the original
Warranty Period, these Warranty
Rights are automatically transferable
to subsequent owners of this product.
WARNING!
WARNING!
A statement preceded by the
The engine exhaust from this
product contains chemicals known
to the State of California to cause
cancer, birth defects or other
reproductive harm.
triangular attention symbol and the
word “WARNING” contains informa-
tion that should be acted upon to
prevent serious bodily injury.
What is Covered by this
Warranty
1. Carburetor Internal Components
A pole pruner operates at very high
speeds and has the potential to do
serious damage if misused, abused or
mishandled. To reduce the risk of
injury, you must maintain control at all
times, and observe all safety precau-
tions during operation. Never permit
a person without training or
■ Throttle Valve, Needle, Jet,
Metering Diaphragm
CAUTION!
Your engine emission control
system includes parts such as the
carburetor, the ignition system and, if
equipped, the catalytic converter.
These components are specifically
listed below.
Where a warrantable condition
exists, Shindaiwa Kogyo Co., Ltd. will
repair your small off-road engine at no
cost to you including diagnosis, parts,
and labor.
A statement preceded by the word
“CAUTION” contains information
that should be acted upon to avoid
damage to the unit.
2. Ignition System Components
■ Ignition Coil
■ Flywheel Rotor
3. Catalytic Converter (if originally
equipped)
IMPORTANT!
A statement preceded by the word
“IMPORTANT” is one that possesses
special significance.
instruction to operate this pruner!
The emission control system for
your particular Shindaiwa engine may
also include certain related hoses and
connectors.
NOTE:
A statement preceded by the word
“NOTE” contains information that is
handy to know and may make your
job easier.
34
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Troubleshooting Guide (continued)
Never operate the pruner at
an angle greater than 60O in
order to reduce the risk of
being struck by falling
Read and follow this
operators manual.
Failure to do so could
result in serious injury.
ADDITIONAL PROBLEMS
60°
Symptom
Possible Cause
Remedy
Max.
Warped or damaged
attachment.
Inspect and replace
attachment as required.
objects during operation.
Excessive
vibration.
Always wear a hard hat
to reduce the risk of head
injuries during operation
of this unit. Wear eye
and hearing protection
at all times during the
operation of this unit.
Never operate power
equipment of any kind
if you are tired or if you
are under the influence
of alcohol, drugs,
medication, or any other
substance that could affect
your ability or judgement.
Loose gearcase.
Tighten gearcase securely.
Bent main shaft/worn or Inspect and replace
damaged bushings.
as necessary.
Shaft not installed
in powerhead or
gearcase.
Inspect and reinstall
as required.
Cutter will not
rotate.
Wear nonslip heavy-duty
work gloves to improve
your grip on the pole
pruner handle. Wear
sturdy footwear with
nonslip soles to provide
good footing. Steel-toed
safety boots are
recommended. Wear
snug-fitting clothes
that also permit freedom
of movement.
Beware of kickback!
Kickback can occur
whenever the tip of the
guide bar touches an
object while the saw is
operating. Kickback may
force the bar up and back
toward the operator!
Broken shaft.
Consult with an authorized
servicing dealer.
Damaged gearcase.
Consult with an authorized
servicing dealer.
Beware of pinching.
Pinching the saw along the
tip of the guide bar may
force the bar back rapidly
toward the operator.
Pinching can occur
whenever wood closes in
around the moving chain.
Keep bystanders at least
50 feet (15 meters) away
from the operating pruner
to reduce the risk of being
struck by falling objects or
thrown debris.
50ft
15M
Kickback and Pinching Safety Precautions
WARNING!
pinching as well as maintain-
ing control of the unit.
Both kickback and pinching may
cause you to lose control of the pole
pruner which could result in serious
personal injury. Do not rely exclu-
sively on the safety device built
into the pruner! You must take
several steps to keep your jobs free
from accident or injury:
3. Make sure the area in which
you are cutting is free from
obstructions. Do not let the
nose of the guide bar contact
a log, branch, or any other
obstructions which could be
hit while you operate the pole
pruner.
1. Understand kickback and
pinching! You can reduce or
eliminate the element of
surprise. Sudden surprise
contributes to accidents.
4. Cut at high engine speeds.
5. Follow the manufacturer’s
instructions for sharpening
and maintaining the chain.
2. Keep a firm grip on the pole
pruner with both hands when-
ever the engine is running. A
firm grip will help you reduce
the effects of kickback and
6. Use only the replacement bar
and chain or equivalent as
specified by the manufacturer.
4
33
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Troubleshooting Guide (continued)
Operating the Pruner
ADDITIONAL PROBLEMS
Always wear eye and
Symptom
Possible Cause
Remedy
hearing protection.
Shindaiwa recommends
wearing a face shield as
additional face and eye
protection.
Clogged air cleaner
element.
Clean the air cleaner
element.
Poor
acceleration.
Always wear a hard hat
to reduce the risk of
head injuries during
operation of this unit.
Clogged fuel filter.
Replace the fuel filter.
Carburetor mixture
too lean.
Consult with an authorized
servicing dealer.
Idle speed set too low.
Switch turned off.
Adjust: 2,750 (
ע 250) rpm (min-1) Never operate the pruner
at an angle greater than
60° in order to reduce the
risk of being struck by
falling objects during
operation.
Reset the switch and re-start.
Engine stops
abruptly.
Wear nonslip heavy-
duty work gloves to
improve your grip on
the pole pruner handle.
Wear snug-fitting
clothes that also permit
freedom of movement.
NEVER wear shorts!
Fuel tank empty.
Clogged fuel filter.
Water in the fuel.
Refuel.
Replace filter.
Drain and refill with fresh, clean
unleaded gasoline with a pump octane
of 87 or higher mixed with
a 2-cycle air cooled mixing oil that
meets or exceeds ISO-L-EGD
and/or JASO FC classified oils at
50:1 gasoline/oil ratio.
Always operate with
both hands firmly
gripping the unit.
Shorted spark plug or
loose terminal.
Clean and replace spark plug,
tighten the terminal.
Ignition failure.
Piston seizure.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Keep a proper footing
and do not overreach—
maintain your balance at
all times during opera-
tion.
Ground (stop) wire is
Test and replace
Engine difficult
to shut off.
disconnected, or switch as required.
is defective.
Wear sturdy footwear with
nonslip soles to provide
good footing. Steel-toed
safety boots are recom-
mended. Never operate
unit bare-footed!
Overheating due to
incorrect spark plug.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
Keep bystanders at least 50 feet (15
meters) away from the operating pruner
to reduce the risk of being struck by
falling objects or thrown debris.
Overheated engine.
Engine idle too high.
Idle engine until cool. Refer to
page 20 (overheated engine).
Figure 1
Set idle: 2,750 (
ע 250) rpm (min-1) Cutting
attachment
moves at
engine idle.
Replace spring/shoes as
required, check idle speed.
Broken clutch spring or
worn clutch spring boss.
Inspect and re-tighten
holder securely.
Loose attachment holder.
32
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Troubleshooting Guide (continued)
Safety Equipment and Labels
LOW POWER OUTPUT
What To Check
Possible Cause
Remedy
Operator is overworking
the machine.
Shorten trimmer line. Cut at
a slower rate.
Is the engine
overheating?
Shaft Safety Label
Carburetor mixture is
too lean.
Consult with an authorized
servicing dealer.
Improper fuel ratio.
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
a 2-cycle air cooled mixing oil that
meets or exceeds ISO-L-EGD
and/or JASO FC classified oils at
50:1 gasoline/oil ratio.
Fan, fan cover, cylinder
fins dirty or damaged.
Clean, repair or replace
as necessary.
High Voltage Label
Carbon deposits on the
piston or in the muffler.
Consult with an authorized
servicing dealer.
Ignition
Switch
Clogged air cleaner
element.
Service the air cleaner.
Engine is rough
at all speeds.
May also have
black smoke
and/or unburned
fuel at the
Loose or damaged
spark plug.
Tighten or replace.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
Throttle
Interlock
exhaust.
Air leakage or clogged
fuel line.
Repair or replace fuel
filter and/or fuel line.
Water in the fuel.
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
IMPORTANT!
Safety and Operation Information
Labels: Make sure all information
labels are undamaged and readable.
Immediately replace damaged or
missing information labels. New labels
are available from your local autho-
rized Shindaiwa dealer.
a 2-cycle air cooled mixing oil that
meets or exceeds ISO-L-EGD
and/or JASO FC classified oils at
50:1 gasoline/oil ratio.
Piston seizure.
Consult with an authorized
servicing dealer.
Consult with an authorized
servicing dealer.
Faulty carburetor and/
or diaphragm.
Figure 2
Overheating condition.
Improper fuel.
See above.
Engine is
knocking.
Check fuel octane rating;
check for presence of
alcohol in the fuel (pg. 18).
Refuel as necessary.
Carbon deposits in the
combustion chamber.
Consult with an authorized
servicing dealer.
6
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Operating Precautions
Troubleshooting Guide
ENGINE DOES NOT START
WARNING!
Use Good Judgement
What To Check
Possible Cause
Remedy
Faulty recoil starter.
Fluid in the crankcase.
Internal damage.
Consult with an authorized
servicing dealer.
Does the engine
crank?
NO
NO
NO
■ Make sure the chain and
■ Make sure there is always
good ventilation when operat-
ing the pruner. Fumes from
engine exhaust can cause
serious injury or death. Never
run the engine indoors!
■ Do not operate the pole pruner
with the muffler removed.
sprocket are correctly adjusted
before operating the pruner
(see page 15 for adjustment
procedures). Never attempt
chain adjustment with the
engine running!
YES
Loose spark plug.
Excess wear on
cylinder, piston, rings.
Tighten and re-test.
Consult with an authorized
servicing dealer.
Good
compression?
YES
Fuel incorrect, stale, or
contaminated; mixture
incorrect.
Refill with fresh, clean unleaded
gasoline with a pump octane
of 87 or higher mixed with
a 2-cycle air cooled mixing oil that
meets or exceeds ISO-L-EGD
and/or JASO FC classified oils at
50:1 gasoline/oil ratio
Does the tank
contain fresh
fuel of the
■ Always make sure the cutting
attachment is properly
■ When cutting a limb that is
under tension, be alert for
springback so that you will not
be struck by the moving limb.
■ Always stop the engine
immediately and check for
damage if you strike a foreign
object or if the unit becomes
tangled. Do not operate with
broken or damaged equipment.
■ Stop the unit immediately if it
suddenly begins to vibrate or
shake. Inspect for broken,
missing or improperly in-
stalled parts or attachments.
■ Never transport the pruner
nor set it down with the
installed and firmly tightened
before operation.
proper grade?
■ Never use a cracked or
warped guide bar: replace it
with a serviceable guide bar
and make sure it fits properly.
■ If a saw blade should bind fast
in a cut, shut off the engine
immediately. Push the branch
or tree to ease the bind and
free the blade.
■ Make sure there are no missing
or loose fasteners, and that the
ignition switch and throttle
controls are working properly.
■ Before starting the engine,
make sure the saw chain is
not contacting anything.
YES
Check for clogged fuel
filter and/or vent.
Clean as required;
restart.
Is fuel visible
and moving in
the return line
when priming?
NO
NO
YES
The ignition switch
is in “O” (OFF) position. position and re-start.
Shorted ignition ground.
Faulty ignition unit.
Move switch to “I” (ON)
Is there spark at
the spark plug
wire terminal?
Consult with an authorized
servicing dealer.
YES
If the plug is wet, excess Crank the engine with the
fuel may be in the
cylinder.
Check the
spark plug.
plug removed, reinstall the
spark plug, and re-start.
engine running. An engine
that’s running could be
The plug is fouled
or improperly gapped.
Clean and re-gap the spark plug
to 0.024 inch (0.6 mm). Re-start.
accidentally accelerated
causing the chain to rotate.
The plug is damaged
internally or of the
wrong size.
Replace the spark plug with a
Champion CJ8 or equivalent spark
plug of the correct heat range.
Adjust the spark plug electrode gap to
0.024-inch (0.6 mm).
WARNING!
Minimize the Risk of Fire
■ NEVER smoke or light fires
■ ALWAYS inspect the unit for
fuel leaks before each use.
During each refill, check that no
fuel leaks from around the fuel
cap and/or fuel tank. If fuel leaks
are evident, stop using the unit
immediately. Fuel leaks must be
repaired before using the unit.
■ NEVER place flammable
material close to the engine
muffler.
near the unit.
■ ALWAYS stop the engine and
allow it to cool before refuel-
ing. Avoid overfilling and wipe
off any fuel that may
have spilled.
■ ALWAYS move the unit to a
place well away from a fuel
storage area or other readily
flammable materials before
starting the engine.
■ NEVER run the engine without
the spark arrester screen in place.
30
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Operating Precautions
Correct Filing Technique
Correct angle on
top plate
Slightly protruding hook or point
(curve on non-chisel chain)
Top of depth
gauge at correct
height below top
plate
0.020"
A
A=B
B
6
Front of depth
gauge rounded
Keep all cutter lengths equal
FilingProblems
Top plate angle
less than
recommended
Top plate angle
more than
recommended
Cause
Cause
File held at less than
recommended angle.
Result
File held at more than
recommended angle.
Result
Slow cutting. Requires
extra effort to cut.
Remedy
File cutters to recom-
mended angle.
Cutting angle is very
P231_47
sharp but will dull fast.
Cutting action rough and
erratic.
Remedy
File cutters to
50¡
Figure 3
20¡
CAUTION!
recommended angle.
Cause
Cause
Hook in side
plate cutting
edge
Backslope on
side plate
cutting edge
■ Always maintain the P231
pole pruner according to the
this owner’s manual and
follow the recommended
scheduled maintenance.
■ When transporting the pruner in
a vehicle, tie it down securely to
prevent damage and fuel
spillage.
File held too low or the
file was too small.
Result
Rough cutting. Chain
grabs. Cutters dull quickly
or won’t hold a cutting
edge.
File held too high or the
file was too large.
Result
Cutters won’t feed into
wood. Slow cutting. Must
force chain to cut. Causes
excessive bottom wear.
Remedy
■ Always clear your work area of
trash or hidden debris to help
ensure good footing.
■ Never modify or disable any of
the pole pruner’s safety
devices.
P
Remedy
23_50
■ Keep the saw chain sharp and
File cutters at recom-
mended angle. Check file
size.
File cutters at recom-
mended angle. Check file
size.
■ Always use genuine
Shindaiwa parts and accesso-
ries when repairing or main-
taining this unit.
properly adjusted.
■ Keep the pruner as clean as
possible. Keep it free of loose
vegetation, mud, etc.
Cause
Depth gauge never filed.
Result
Slow cutting. Must force
chain to cut. Will cause
excessive wear on the
cutter heel.
Remedy
Lower gauges to
recommended setting.
Cause
Wrong gauge setting or
no gauge used.
High depth
gauge
Low depth
gauge
■ Do not make unauthorized
modifications or substitutions
to the guide bar or chain.
■ Make sure the scabbard is
in place when transporting the
pruner.
Result
■ Never allow the engine to run
at high RPM without a load.
Doing so could damage the
engine.
■ When carrying by hand, the
chain should be pointing
backward. See Figure 3.
Rough cutting. Chain
grabs. Saw won’t pull
chain through wood.
Excessive wear on the
cutter heel.
P231_52
Remedy
If depth gauges are too
low, the chain is no
longer serviceable.
8
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P231 Specifications
Sharpening the Chain
Dry Weight................... 6.1 kg/13.4 lb. Transmission Type.............. Automatic,
When the cutting edges of the
blade become dull, they can be re-
sharpened with a few strokes of a file.
In order to keep the blade in
balance, all cutting edges must be
sharpened equally.
In addition, inspect the chain for
correct adjustment (more frequently
with a new chain). The chain should
feel snug but still pull freely. See
Figure 36. Refer to page 16 for
adjustment procedures.
centrifugal clutch with bevel gear
Length w/10" bar
assembly .......... 2804 mm/110.4 in. Chain Guide Bar ................. 3/8" pitch,
.043" gauge, 10-inch Micro Lite™
Engine Type ............2-cycle, air-cooled,
vertical-cylinder
Chain Type ..... 3/8" pitch Micro Lite™,
.043" gauge
1
Bore x Stroke ...32 x 28 mm/1.3 x 1.1 in.
Displacement ......... 22.5 cc/1.4 cu. in.
Sprockets .............. 3/8-inch, fixed spur
Gearcase Ratio ........................... 1.06 : 1
Chain Speed .......... 23.5 m (77 ft.)/sec.
@ 10,000 rpm (min-1)
Chain Lubrication ................. Automatic
adjustable oiler
Maximum Output .......... 0.8kW/1.1 hp
Figure 36
@ 7500 rpm (min-1)
Using a filing
gauge
Sharpening Instructions (Fig.37)
Fuel/oil ratio ...... 50:1 with ISO-L-EGD
or JASO FC class 2-cycle Mixing Oil
Shindaiwa ONE is a registered
JASO FC classified oil and alsomeets
or exceeds ISO-L-EGD performance
requirements.
IMPORTANT!
File all cutters to the same angle and
depth! Unequal filing may cause the
saw to vibrate or cut erratically!
Chain Lubricant ...Shindaiwa Premium
Bar and Chain Oil
2
Standard Equipment ............ Bar/chain
scabbard, tool kit containing a
Using a depth
gauge joiner
1. Using a 4.5 mm round file, sharpen
all cutters to a 30° angle. Make
sure that one fifth (20%) of the file’s
diameter is always held above the
cutter’s top plate.
Fuel Tank Capacity .... 670 ml/22.7 oz.
spark plug wrench, 4 mm hex
wrench and 8 mm x 10 mm spanner
Carburetor Type ....... Walbro WYL-122
Ignition .............. One-piece, electronic,
transistor-controlled
Optional Equipment .... Shoulder strap,
loop handle
NOTE:
Using a flat
file to round
the front
corner on a
depth gauge
For consistent filing angles, use a
filing guide such as Oregonா p/n
31692 or equivalent.
Spark Plug ..................... Champion CJ8
Optional Bars ............. 8-inch or 12-inch
Air Filter .......... Non-reversible flocked
filter element
EPA Emission
Compliance Period* ........... Category A
4
2. After all cutters are sharpened, use
a depth gauge joiner (Oregonா
p/n 106738 or equivalent) to
measure the height of each depth
gauge.
Figure 37
Muffler Type ............... 2-Stage Catalyst
Starting Method .......................... Recoil
Cooling System..................... Forced air
Stopping Method ............... Slide switch
* The EPA emission compliance referred to
on the emission compliance label located on
the engine, indicates the number of operating
hours for which the engine has been shown
to meet Federal emission requirements.
Category C = 50 hours (Moderate), B = 125
hours (Intermediate) and A = 300 hours
(Extended).
3. As required, lower the depth
gauges to a height of 0.020 inch.
Use a flat file; (Oregonா p/n 12211
or equivalent).
Specifications are subject to change without notice.
4. After all depth gauges have been
adjusted, use a flat file to round
each depth gauge leading edge to
its original curvature and angle.
28
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Product Description
Long Term Storage
Whenever the unit will not be used for
30 days or longer, use the following
procedures to prepare it for storage:
Bar and
CAUTION!
Top Engine
Cover Screw
Air Filter
Assembly
Chain
Gasoline stored in the carburetor
for extended periods can cause
hard starting, and could also lead
to increased service and mainte-
nance costs.
Spark
Plug
■ Clean external parts thoroughly
and apply a light coating of oil to all
metal surfaces.
■ Drain all the fuel from the fuel tank.
Upper
Tube
■ Remove the spark plug and pour
about 1/4 ounce of 2-cycle mixing
oil into the cylinder through the
spark plug hole. Slowly pull the
recoil starter 2 or 3 times so oil will
evenly coat the interior of the
IMPORTANT!
All stored fuels should be stabilized
with a fuel stabilizer such as
Recoil
Starter
Powerhead Assembly
STA-BIL™ , if
oil with fuel
Fuel Tank
stabilizer is not used.
Coupler
Oil Filler
Handle
Grip
engine. Reinstall the spark plug.
To remove the remaining fuel from
the fuel lines and carburetor and with
the fuel drained from the fuel tank.
■ Before storing the unit, repair or
replace any worn or damaged parts.
Ignition
Switch
Gearcase
Cap
Guide Bar
and Chain
■ Remove the air cleaner element
from the carburetor and clean it
thoroughly with soap and water.
Let dry and reassemble the
element.
1. Prime the primer bulb until no
more fuel is passing through.
2. Start and run the engine until stops
running.
Lower
Tube
3. Repeat steps 1 and 2 until the
engine will no longer start.
■ Store the unit in a clean, dust-free
Cutting Head
Assembly
area.
Bar Oil Reservoir
Figure 4
Throttle Trigger
Prior To Assembly
IMPORTANT!
Using Figure 4 as a guide, familiar-
ize yourself with the Shindaiwa P231
pole pruner and its various compo-
nents. Understanding your unit helps
ensure top performance, longer
service life, and safer operation.
Before assembling, make sure you
have all the components required for a
complete unit:
The terms “left”, “left-hand”, and “LH”;
“right”, “right-hand”, and “RH”; “front”
and “rear” refer to directions as
viewed by the operator during normal
operation.
WARNING!
Do not make unauthorized
modifications or alterations to your
pruner or its components.
■ Powerhead assembly
■ Lower tube assembly
■ Upper tube/saw assembly, chain
and guide bar
■ Kit with this manual and tool kit for
routine maintenance.
■ Scabbard.
Carefully inspect all components for
damage.
10
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Assembly
Driveshaft/Powerhead
135-hour Maintnenace
5. Remove the rear muffler shield bolt
and, while noting the orientation of
parts, separate the muffler shield.
Every 135 hours of operation,
remove and clean the muffler.
Spark
Plug
Clamp Screw
Main
Shaft
6. Remove the spark arrester screen
and clean with a stiff bristle brush.
WARNING!
Outer Tube
7. Gently tap the muffler on a wood
surface to dislodge any loose
carbon.
Never operate the unit with a
damaged or missing muffler or
spark arrester! Operating with
missing or damaged exhaust
components is a fire hazard and
could also damage your hearing.
Grip
8. Inspect the cylinder exhaust port
for carbon buildup.
Ignition
Switch
IMPORTANT!
If you note excessive carbon buildup,
consult your servicing dealer.
Tube
Clamp
1. Remove the spark plug boot.
2. Loosen the two 4 mm engine cover
screws (located at the top of the
recoil housing).
9. Reassemble the muffler in the
reverse order of disassembly.
Throttle Lever
Figure 5
3. Loosen the 5 mm engine top cover
screw (the screw is captive) and lift
the cover from the engine.
Connect the Outer Tube to the Powerhead.
1. Place the powerhead on a clean, flat
surface, spark plug facing up.
See Figure 5.
4. Slide the outer tube into the tube
clamp until the tube bottoms. If
installation is difficult, rotate the
outer tube or gearcase shaft
slightly until you feel the mainshaft
splines engage with the powerhead.
See Figure 5.
4. Remove the two 5 mm muffler
screws. Remove the lower muffler
screw, then lift the muffler assem-
bly from the engine.
Tube Clamp
Forward
Rear Muffler
Shield
Spark
Arrester
Screen
Muffler
Shield
5. Position the outer tube so that the
ignition switch is facing up and the
throttle lever is facing down. See
Figure 5.
Hex
Wrench
6. Slide the outer tube into the
powerhead until the throttle grip
just contacts the tube clamp.
5 mm Muffler
Screws
Shim Washer
Figure 6
2. Use the 4 mm hex wrench to
loosen the tube clamp screw. Verify
that the D-shaped shim washer is
positioned as shown. See Figure 6.
7. Tighten the clamp screw firmly.
CAUTION!
Do not force the shaft tube into the
powerhead! Excessive force can
damage the shaft tube and
mainshaft.
CAUTION!
Do not remove the D-shaped shim
washer! The shim washer pre-
vents damage from overtightening
the tube clamp screw.
Lower Muffler
Screw
Rear Muffler
Shield Bolt
Catalyst Muffler
Figure 35
3. Add some moly-type EP grease to
splines at the end of the main shaft.
26
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Assembly
Throttle Linkage and Ignition Leads
50-hour Maintenance
Gearcase Clamp
Every 50 hours of operation
(more frequently in dusty or
dirty conditions):
Remove the Cylinder Cover.
1. Remove the spark plug boot.
Connect the Throttle Cable.
1. Loop the ribbed cable tube to the
top left side of the engine.
2. Remove the two lower cylinder
cover screws.
■ Remove and clean the cylinder
cover and clean dirt and debris
from the cylinder cooling fins.
2. Install the black wire between the
two cable adjuster nuts as shown.
See Figure 8.
3. Loosen the top cylinder cover
screw until the cover is free of the
engine. (The top cylinder cover
screw is captive). Lift the cylinder
cover off of the engine.
■ Remove the sprocket cover and
inspect the sprocket for excessive
dirt, debris, or wear. Remove the
guide bar and clean out the guide
bar groove. If the sprocket is
Ignition
Leads
Index
Bolt
See Figure 7.
Grease Fitting
Figure 33
excessively worn, replace it with a
new one. See Figure 32.
Top
Cylinder
Cover
from the gearcase, this can be seen
in the outer tube cavity at the input
end of the gearcase. Clean up
excess grease, then reassemble the
gearcase onto the outer tube.
Screw
Inspect the
sprocket
Cable
Adjuster
Spark Plug
Hex
Wrench
Boot
■ Use a hooked wire to extract the
fuel filter from inside the fuel tank
(Figure 34). Inspect the fuel filter
element for signs of contamination.
Replace it with a new one if re-
quired. Before reinstalling the
filter, inspect the fuel line. If you
find damage or deterioration,
23145
Figure 8
3. Connect the S-shaped end of the
throttle cable to the throttle lever
on top of the carburetor.
See Figure 9.
P231_37
Figure 32
remove the unit from service until
it can be inspected by a Shindaiwa-
trained service technician.
■ Lubricate the gearcase. To
perform this operation, first remove
the gearcase from the upper outer
tube as follows (Figure 33):
CAUTION!
Lower Cylinder
Make sure you do not pierce the
fuel line with the end of the
Cover Screws
Figure 7
CAUTION!
hooked wire. The line is delicate
and can be damaged easily.
Do not remove the D-shaped shim
washer from the gearcase clamp!
The shim washer prevents
damage from overtightening the
tube clamp screw.
Figure 9
Hooked
Wire
• loosen the gearcase clamp bolt.
• remove the index bolt from the
gearcase.
• slide the gearcase out of the tube.
Using a lever-type grease gun,
pump lithium-base grease (about 10
grams) into the grease fitting until
you see old grease being purged
Filter Element
Figure 34
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Assembly
Throttle Linkage and Ignition Leads
10-Hour Maintenance
10/15-Hour Maintenance
CAUTION!
CAUTION!
Spark
Plug Boot
Do not operate the unit if the air
cleaner or element is damaged, or if
the element is wet.
Before removing the spark plug,
clean the area around the plug to
prevent dirt and debris from getting
into the engine’s internal parts.
Black Wire
Red Wire
Every 10 hours of operation,
(more frequently in dusty or
dirty conditions):
Every 10 to 15 hours
of operation:
Remove the air cleaner element from
the air cleaner housing and clean it
thoroughly with soap and water. Let it
dry before reinstalling the element.
See Figure 30.
Remove and clean the spark plug. See
Figure 31. Adjust the spark plug
electrode gap to 0.024-inch (0.6 mm).
If the plug must be replaced, use only:
Champion CJ8 or equivalent spark
plug of the correct heat range.
Unscrew
Fastener
Clean the spark plug
and check the gap at
the electrode.
Ignition Ground
Lead
Black Wire
Figure 10
Assemble and Adjust the Throttle Cable.
Remove and
clean the
element
1. Insert the throttle cable housing
into the notch on the fan cover, and
clamp the black wire’s connector
between the fan cover and the cable
outer adjuster nut. See Figure 10.
3. Using finger pressure only, connect
the black switch wire from the
cable tube to the red ignition wire
on the powerhead. Wire routing
must be as shown in the illustration
with the black wire located over the
spark plug wire. See Figure 10.
0.024 inch
(0.6 mm)
2. Tighten the two throttle cable
adjuster nuts.
4. Reinstall the cylinder cover and
tighten the three cover screws.
IMPORTANT!
Adjust and tighten the cable nuts to
allow approximately 1/4-inch freeplay
at the throttle trigger.
5. Reinstall the spark plug boot.
CAUTION!
P231_36
Routing of wiring must not inter-
fere with throttle operation.
Figure 30
Figure 31
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Assembling the Tube Sections
Daily Maintenance
Prior to each work day, perform the
following:
Muffler
4. When the two tube halves are
1. Place the powerhead/lower tube
assembly and the upper tube
locked together, press down on the
spring-loaded latch protector and
tighten the coupler screw. See
Figure 12.
assembly on a clean, flat surface so
that both assemblies fit end to end.
The powerhead/lower tube
■ Remove all dirt and debris from the
engine, check the cooling fins and
air cleaner for clogging, and clean
as necessary. See Figure 29.
WARNING!
Operating the engine without a
muffler or with a muffler that is
damaged or improperly installed
can increase engine noise suffi-
ciently to cause hearing loss.
assembly should be facing up, and
the lower tube assembly should be
positioned with the locking hole in
the tube end facing up.
Latch Protector
Coupler
Keep cooling
fins clean
(lowered)
CAUTION!
This unit must never be operated with a
faulty or missing spark arrestor or
muffler. Make sure the muffler is well
secured and in good condition. A worn
or damaged muffler is a fire hazard and
may also cause hearing loss.
Keep the open ends of the tubes
clean and free of debris!
Keep air
passages
clean
2. Slip off the protective covers from
the ends of both tubes, and loosen
the coupler screw knob.
P231_13
Coupler Screw
Knob
3. Insert the upper tube assembly into
the coupler, arrow on the upper
tube decal facing up, until the line
of the decal is flush with the end of
the coupler. Rock the upper tube
back and forth until you are sure
the latch snaps in place by the
coupler lock. See Figure 11.
Spark Plug
Keep the spark plug and wire connec-
tions tight and clean.
Figure 12
Figure 29
Disassembling The Pole Sections
■ Carefully remove any accumulations
of dirt or debris from the muffler and
fuel tank. Check cooling air intake
area at base of crankcase. Remove
all debris. Dirt build-up in these areas
can lead to engine overheating, fire,
or premature wear.
1. With the pole pruner on a clean, flat
surface, loosen the coupler screw.
The spring-loaded coupler protec-
tor should pop up.
Latch Protector
2. Press down on the latch with your
finger or thumb. See Figure 13.
This releases the coupler lock.
(extended)
Tube
Assembly
Latch
Locking
Hole
WARNING!
Press
Latch
Always wear gloves when working
around the cutter assembly.
■ Clean any debris or dirt from the
cutting attachment. Check the bar
and chain for damage or incorrect
adjustment.
Coupler
Screw
Knob
Coupler
■ Check for loose or missing screws or
components. Make sure the cutter
attachment is securely fastened.
Tube
Assembly
Figure 13
Figure 11
■ Check the entire unit for leaking
3. Pull the upper tube assembly out of
the coupler.
fuel or grease.
■ Make sure nuts, bolts, and screws
(except carburetor idle speed
adjusting screws) are tight.
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General Maintenance
Installing and Adjusting the Bar and Chain
IMPORTANT!
Installing The Chain
Guide Bar
MAINTENANCE, REPLACEMENT,
OR REPAIR OF EMISSION CON-
TROL DEVICES AND SYSTEM MAY
BE PERFORMED BY ANY REPAIR
ESTABLISHMENT OR INDIVIDUAL.
HOWEVER, WARRANTY REPAIRS
MUST BE PERFORMED BY A
DEALER OR SERVICE CENTER
AUTHORIZED BY SHINDAIWA
KOGYO, LTD. AND USE OF PARTS
THAT ARE NOT EQUIVALENT IN
PERFORMANCE AND DURABILITY
TO AUTHORIZED PARTS MAY
IMPAIR THE EFFECTIVENESS OF
THE EMISSION CONTROL SYSTEM
AND MAY HAVE A BEARING ON
THE OUTCOME OF THE WAR-
RANTY CLAIM.
WARNING!
Adjustment
Stud
WARNING!
Before performing any mainte-
nance, repair, or cleaning work on
the unit, make sure the engine and
cutting attachment are completely
stopped. Disconnect the spark plug
wire before performing service or
maintenance work.
Chain
Tensioning
Screw
Never attempt to install, replace,
or adjust the chain with the engine
running.
Chain
P231_16
Tensioning Pin
Chain
Tensioner Hole
WARNING!
The saw chain is very sharp. Wear
gloves to protect your hands when
handling.
WARNING!
P231_17
Non-standard accessories, cutting
attachment, or replacement parts
may not operate properly with your
unit and may cause damage and
lead to personal injury.
Guide Bar
Adjustment Stud
Guide Bar
NOTE:
Figure 15
For longest chain life, let new or
replacement chain loops soak in oil
overnight before installation.
3. Install the chain loop over the drive
links within the guide bar groove,
and then align the chain over the
drive sprocket. Verify that the
cutters are properly oriented as
shown in Figure 16. If chain
1. Using the small end of the plug
wrench, remove the sprocket cover
nut (turn counterclockwise to
remove) and remove the sprocket
cover. See Figure 14.
IMPORTANT!
Using non-standard replacement parts
could invalidate your
Shindaiwa warranty.
installation is difficult or if the chain
appears too tight, refer to the
section “Adjusting the Chain” on
the next page.
Top of Bar
4. Install the
sprocket cover
BAR
TIP
over the bar stud.
Using finger-
pressure only,
install the
sprocket cover
nut.
5
Bottom of Bar
Sprocket
Sprocket
Cover
Figure 16
Cover Nut
Figure 14
5. Refer to the next page for chain
adjusting procedures.
CAUTION!
Failure to align the guide bar and
chain tensioning pin can cause
serious damage to the sprocket
cover, guide bar, chain tensioning
pin and cutting head assembly.
WARNING!
Never operate the pole pruner
without the sprocket cover installed.
2. Place the guide bar over the guide
bar adjustment stud on the cutting
head assembly. Align the chain
tensioning pin with the hole in the
guide bar. See Figure 15.
22
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Adjusting the Chain
Stopping the Engine
Adjusting Engine Idle
Idle Adjusting
Screw
3. Lift the nose of the guide bar while
turning the chain tensioning screw.
See Figure 18.
WARNING!
Faster
Slower
Never attempt to install, replace,
or adjust the chain with the engine
running.
WARNING!
Chain Tensioning
Screw
Figure 18
The saw chain is very sharp. Wear
gloves to protect your hands when
handling.
Figure 27
Figure 28
• clockwise to tighten the chain
CAUTION!
• counter clockwise to loosen the
chain.
Idle the engine briefly before stopping The engine must return to idle speed
(about 2 minuts), then slide the
ignition switch to the “O” (engine
OFF) position. See Figure 27.
whenever the throttle lever is released.
Idle speed is adjustable, and must be set
low enough to permit the engine clutch
to disengage the cutting attachment.
A loose chain can jump off the
guide bar causing damage to the
chain and associated equipment.
Always make sure the chain is
properly adjusted; check more
often when you are breaking in a
new chain.
4. Pull the chain by hand along the
top of the guide bar several times
from the engine to the bar’s tip.
The chain should feel snug but still
pull freely. See Figure 19.
Check and Adjust Idle Speed
1. Start the engine and allow it to
warm up at low rpm.
IMPORTANT!
2. If the cutting attachment rotates at
engine idle, reduce idle speed by
turning the idle adjusting screw
counter-clockwise. See Figure 28.
Proper chain adjustment is essential
for maximum performance, long chain
life, and operator safety. Always
inspect chain tension before operating
the pole pruner.
NOTE:
Standard idle speed is
2,750 (+/– 250) rpm (min-1).
1. Place the pole pruner on a clean,
flat surface. (For readjustment
during operation, shut down the
engine, then allow the guide bar
and chain to cool before proceeding
with the adjustment procedure).
Figure 19
WARNING!
5. Tighten the sprocket cover nut
securely while lifting the tip of the
guide bar.
The cutting attachment must
NEVER rotate at engine idle! If the
idle speed cannot be adjusted by
the procedures described here,
return the trimmer to your
2. Loosen the sprocket cover nut with
a plug wrench (Figure 17).
6. Inspect the chain for correct
adjustment (more frequently with a
new chain). The chain should feel
snug but still pull freely.
Shindaiwa dealer for inspection.
IMPORTANT!
Units with emission control systems
are equipped with factory preset
carburetor adjustments. Only idle
adjustment can be done in the field.
Sprocket Cover Nut
Figure 17
16
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Starting the Engine (continued)
Chain Oiler
Adjusting Oil Flow Rate
IMPORTANT!
WARNING!
WARNING!
If the engine fails to start after several
attempts with the choke in the closed
position, the engine may be flooded
with fuel. If flooding is suspected,
move the choke lever to the open
position and repeatedly pull the recoil
starter to remove excess fuel and start
the engine. If the engine still fails to
start, refer to the troubleshooting
section of this manual.
CAUTION!
An increase in bar oil flow rate will
speed oil consumption, requiring
more frequent checks on the oil
reservoir. To ensure sufficient
lubrication, it may be necessary to
check the oil level more frequently
than at fuel tank refills.
Never fill the oil reservoir nor
adjust the oiler with the engine
running.
The cutting attachment may rotate
when the engine is started!
5. When the engine starts, slowly
move the choke lever to the
IMPORTANT!
"OPEN" position. See Figure 26.
(If the engine stops after the initial
start, close the choke and restart.)
The service life of the chain and guide
bar is affected by the quality of the
lubricant. Using superior lubricant such
as Shindaiwa Bar and Chain Oil will help
ensure a long service life, For cold
weather operation, mix bar and chain oil
with an equal part of kerosene.
The guide bar and chain are lubri-
cated automatically by a pump that
operates whenever the chain rotates.
The pump is set at the factory to
deliver a minimum flow rate, but it can
be adjusted in the field. A temporary
increase in oil flow is often desirable
when cutting materials such as
When the Engine Starts...
■ After the engine starts, allow the
engine to warm up at idle 2 or 3
minutes before operating the unit.
Filling The Oil Reservoir
NOTE:
Open
■ Advancing the throttle makes the
cutting attachment turn faster;
releasing the throttle permits the
attachment to stop turning. If the
cutting attachment continues to
rotate when the engine returns to
idle, carburetor idle speed should
be adjusted (see the next page).
hardwood or wood with a lot of pitch.
Adjust the pump as follows:
The oil reservoir has a capacity
sufficient to provide about 40 minutes
of cutting time (when set to deliver
the minimum flow rate, or about as
long as you’ll get from a tank of fuel).
1. Stop the engine and make sure the
stop switch is in the OFF position.
2. Place the unit on its side with the
oil reservoir up. See Figure 21.
1. Place the pole pruner on a clean,
flat surface with the oil filler cap
facing up. See Figure 20. Wipe off
any debris from the oil cap and
from around the oil filler neck.
Figure 26
Oil
Reservoir
WARNING!
Never start the engine from the
operating position.
Oil Filler
Cap
Oil Flow
Adjusting Screw
Figure 21
CAUTION!
The oil flow adjusting screw must
be pressed in slightly in order to
turn. Failure to do so could
Figure 20
damage the pump and screw.
2. Remove the oil filler cap and fill the
reservoir with bar and chain oil,
then replace the cap.
3. With a screwdriver, push in on the
oil flow rate adjusting screw and
turn in the desired direction (there
are three incremental settings):
3. Wipe up spilled oil from the unit
before restarting the pole pruner.
• clockwise–decrease lubrication.
• counter clockwise–increase
lubrication.
20
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Starting the Engine
Mixing Fuel
IMPORTANT!
CAUTION!
WARNING!
Engine ignition is controled by a two position switch mounted on the throttle
housing labeled, "I" for ON or START and "O" for OFF or STOP.
Some types of gasoline contain
alcohol as an oxygenate. Oxygen-
ated gasoline may cause in-
creased operating temperatures.
Under certain conditions, alcohol-
based gasoline may also reduce
the lubricating qualities of some 2-
cycle mixing oils. Never use any
type of gasoline containing more
than 10% alcohol by volume!
Generic oils and some outboard
oils may not be intended for use in
high-performance 2-cycle type
engines, and should never be
used in your Shindaiwa engine.
Minimize the risk of fire!
■ Stop engine before refueling.
■ Always allow the pole pruner
to cool before refueling!
■ Wipe all spilled fuel and move
the pole pruner at least 10
feet (3 meters) from the
fueling point before restarting!
■ Never start or operate this unit
if there is a fuel leak!
■ Never start or operate this unit
if the carburetor, fuel lines,
fuel tank and/or fuel tank cap
are damaged.
■ Never smoke or light any fires
near the trimmer or fuel!
■ Never place any flammable
material near the engine
muffler!
■ Never operate the engine
without the muffler and spark
arrester in place and properly
functioning!
Closed
Figure 22
Figure 24
3. Set the choke lever to the CLOSED
position if engine is cold.
1. Slide the ignition switch to the “I”
position (engine ON).
CAUTION!
Return Tube
This engine is designed to operate
on a 50:1 mixture consisting of
Make sure the
cutting head
is clear of
unleaded gasoline and ISO-L-EGD
or JASO FC class 2-cycle mixing oil
only. Use of non-approved mixing
oils in catalyst equipped units can
lead to excessive carbon deposits.
obstructions!
Filling the Fuel Tank
■ Use only fresh, clean unleaded
gasoline with a pump octane of 87
or higher.
■ Mix all fuel with a 2-cycle
air-cooled mixing oil that meets
or exceeds ISO-L-EGD and/or
JASO FC classified oils at 50:1
gasoline/oil ratio.
1. Place the pole pruner on a flat,
level surface.
2. Clear any dirt or other debris from
around the fuel filler cap.
Primer Bulb
Figure 23
Figure 25
3. Remove the fuel cap, and fill
the fuel tank with clean, fresh
fuel mixture.
2. Press the primer bulb until fuel can
be seen flowing in the transparent
return tube.
4. While holding the outer tube firmly
with one hand, slowly pull the
recoil starter handle until resis-
tance is felt, then pull quickly to
start the engine.
Examples of 50:1 mixing quantities 4. Install and firmly tighten the
fuel cap.
IMPORTANT!
■
■
1 gallon of gasoline to 2.6 oz. mixing oil
5 litres of gasoline to 100 ml. mixing oil
The primer system only pushes fuel
through the carburetor. Repeatedly
pressing the primer bulb will not flood
the engine with fuel.
CAUTION!
IMPORTANT!
Oil is a registered JASO FC
classified oil and also meets or
exceeds ISO-L-EGD performance
requirements. Shindaiwa One is
recommended for use in all Shindaiwa
low emissions egines. Shindaiwa one
also includes a fuel stabilizer.
Do not pull the recoil starter to the
end of the rope travel. Pulling the
recoil starter to the end of the rope
travel can damage the starter.
Mix only enough fuel for your immedi-
ate needs! If fuel must be stored
longer than 30 days and
fuel stabilizer is not used, it should
first be treated with a fuel stabilizer
such as StaBil™.
oil with
18
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