Adjustments manual for:
Gear Drive, ETS Gear Drive, Walk Hydro, ETS Walk Hydro, Mini Rider, Large Rider Gen 2
MANUAL NO. 539105471 REV. 01(03/14/02)
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ADJ USTMENTS FOR
HUSQVARNA32", 36" AND48" COMMERCIALMOWERS
4. If the clearance is less than 3/16", disconnect the
AXLE HEIGHTADJ USTMENT
traction rod from the traction lever by removing the
hairpincotter.
1.Toadjustrearaxle,stopengineandplacedrivelevers
in the neutral lock position, remove spark plug wire.
5. Adjust the traction rod to the proper clearance by
screwingitoutoftheswivelifclearanceislessthan 3/
16".
2.Removelowerbeltshieldfromundersideofreardeck
for better access to axle adjustment bolts.
3. Loosen axle pivot bolts and axle adjustment bolts.
See figure # 1.
NOTE:
Moreorlessbrakepressuremaybedesireddepending
on the operator or conditions of operation. To increase
pressure tighten the wing nut on the brake linkage.
4. Place a jack under center of rear deck raise the jack
slightly so axle adjustment bolts may be removed.
5.Withthejackraiseorlowerthereardecktothedesired
positionusingthecharttoensureproperheight.Reinstall
the axle adjustment bolts and tighten.
A tapered punch may be used to help align the holes.
See figure #1.
OPERATOR PRESENCE SWITCH ADJ USTMENT
The operator presence switches can be adjusted by
loosening the screws on the side of the O.P. lever
linkage and sliding the switch up or down. The O.P.
switch should have a 1/32" to 1/16" gap between the
plunger and the bottom side of the control panel when
operatorpresenceleversarereleased.
NOTE:
Itmaybenecessarytoreadjustdriveandbrakelinkages.
NOTE:
BLADE SWITCH ADJ USTMENT
To achieve the best quality cut, the blades should be
level with the ground or slightly tipped forward
The blade engagement switch can be adjusted by
loosening the screws on the flange under the control
panelandmovingtheswitchinorout. Thebladeswitch
should be adjusted so the plunger is fully depressed
when the engagement lever is fully disengaged.
BRAKE /TRACTION ADJ USMENT
1. Disconnect the brake linkage from the brake band
arm.
ADJ USTMENTS -DRIVE BELTS
For all drive belts, tension should be set so that belt
vibration is minimized or eliminated when belts are
moving during normal operation. A properly tensioned
belt should have 1/4" to 3/8" deflection at the center of
belt span between pulleys when blades are engaged.
Blade drive belt tension is preset at the factory.
2.Withthemoweringear,placethetractionleversinthe
drive position. Firmly pull back on the handles until the
tires slide to seat the wheel drive belts into the pulleys.
3. Measure the clearance between the bottom of the
tractionleverrodandthebottomofthethumblatchslot.
It should be between 3/16" to 1/4", but not exceeding 1/
4". See Figure # 3
NOTE:
DO NOT over tighten belt. Excessive tension will
decrease belt and spindle bearing life.
O.P. LEVER
THUMBLATCH
HANDLE
TRACTIONLEVER
3/16" to 1/4" CLEARANCE
Figure3
3
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REAR AXLE HEIGHTADJ USTMENT
AXLE PIVOT BOLTS
AXLE ADJUSTMENT BOLTS
POSITION
A
PLACE JACK HERE
POSITION
B
LOOSEN BOLTS EACH SIDE
POSITION
C
Figure1
POSITION
D
CASTER HEIGHTADJ USTMENT
MACHINERYBUSHING
1/2" SPACERS
CASTER
SWIVEL
Figure2
4
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BLADE DRIVE BELTADJ USTMENTS
WARNING
BEFORE PERFORMING ADJ USTMENTS ON
BLADE BELT, TURN MOWER OFF, CLOSE FUEL
VALVE, ANDDISCONNECTSPARKPLUG WIRE.
1. Remove front deck belt shield.
2. Loosen whiz nut on turnbuckle.
3. Set belt tension when engagement lever is in the
engagedposition.
4. Toincreasebelttensionrotateturnbuckletowardthe
rearofthemoweruntildesiredtensionisgained. Donot
over tighten belts, to much tension will reduce belt and
spindle bearing life. See figure # 6
5. Tightenwhiznutonturnbuckleandinstallbeltshield.
AUXILIARYBLADE DRIVE BELT
(48" MODELS ONLY)
To adjust tension of the auxiliary belt rotate nut on
linkagethatisattachedtodeckstraplocatedontheright
side of cutter deck.
AUXILARY BELT ADJUSTMENT
ROD
TURNBUCKLE
4
5
1/4"
IDLER PIVOT POINT
ENGAGEMENTIDLER
ASSEMBLY
Figure6
5
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SETUP ANDADJ USTMENTS FOR
HUSQVARNA32", 36" AND48" COMMERCIALMOWERS
TRANSMISSION DRIVE BELT
BLADE ENGAGEMENTLEVER
Toincreasethetensionofthetransmissionbelt,loosen
thenutontheundersideofthetransmissionidlerpulley
located under the rear deck, slide the idler assembly
inwardtoincreasetensionandtightenthenuttosecure.
See figures 4 & 5.
The blade engagement lever needs to be adjusted so
the lever does not come in contact with control panel
when the lever is in the off position.
To adjust, remove the clevis pin from the yoke and
adjust by turning the yoke. The clevis pin connects the
blade engagement lever to the yoke, and the yoke is
connectedtothebladeengagementrodthatrunstothe
bellcrank on the rear deck.
BELTGUIDES
Belt guides under rear deck are adjusted as shown in
figures 4 and 5
NOTE: The bla de s s hould c ome to a s top from
m a xim u m s p e e d w ith in
disengaging.
7
s e c o n d s a fte r
32" & 36" MODEL
48" MODEL
1/4"CLEARANCE
1/8"CLEARANCE
103462
102036
1/2"
103462
102036
1/2"
TRANSMISSION BELT
TRANSMISSION BELT
ENGINEPULLEY
ENGINEPULLEY
103463
103462
1/8"CLEARANCE
TRANSMISSIONIDLERPULLEY
Figure5
1/8"CLEARANCE
TRANSMISSIONIDLERPULLEY
Figure4
6
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SETUP ANDADJ USTMENTS FOR
HUSQVARNA 32", 36" AND48" COMMERCIALMOWERS
CUTTING HEIGHTADJ USTMENTCHART
NUMBEROF
SPACERS BELOW
AXLE
POSITION
NUMBER OF 1/4" BLADE SPACERS
CUTTINGHEIGHT
(ININCHES)
UNDERCUTTERHOUSING
CASTER ARM
1 1/2
1 3/4
2
4
3
2
0
2 1/4
2 1/2
1 3/4
2
2 1/4
2 1/2
2 3/4
2 1/2
2 3/4
3
1
0
4
3
A
1
2
1
0
4
3
2
2
3 1/4
3 1/2
3
3 1/4
3 1/2
3 3/4
4
3 1/4
3 1/2
3 3/4
4
4 1/4
3 1/2
3 3/4
4
4 1/4
4 1/2
3 3/4
4
4 1/4
4 1/2
4 3/4
4
4 1/4
4 1/2
4 3/4
5
1
0
4
3
B
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
3
3
C
4
4
5
D
USE ONLY 4 BLADE SPACERS MAXIMUM
1. To quickly achieve small changes in cutting heights,
move the spacers from under the cutter housing to
abovethecutterpulley.(Eachspacermovedwillgivean
additional 1/4" of cutting height ).
7
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ETS Gear Drive Intermediate Walk Behind
Models:
968999117 / W3613ETS
968999120 / W4815ETS
8
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Setup & Adjustments
LINKAGE INSTALLATION
MAINTENANCE
1. Install drive linkage into the hole in the idler
arm on the inside of the tank support. The drive
linkages are fastened to the drive levers on the
handle assembly. Secure the drive linkages to
the idler arm by inserting a retaining ring
through the small hole in the end of the drive
linkage.
2. Install shifter to transmission with 1/4" x 1"
screws.
The shifter is located in the inner box and
hardware is pre-assembled into the bracket
on the transmission.
1. Keep all nuts, bolts, and screws tight to
keep mower in safe operating condition.
2. Never store the mower with gas in the tank
inside a building where fumes can reach an
open flame or spark. Allow engine to cool
before storing in an enclosure.
3. To reduce fire hazard, keep mower free of
grass, leaves, or excessive grease.
4. Check grass catcher assembly frequently
for wear or deterioration. Replace bag if
loose seams or tears are evident.
5. Have your mower inspected and serviced
each year by an authorized HUSQVARNA
dealer. Determine if any additional devices
are available which might upgrade the safety
of your mower.
6. Use only authentic HUSQVARNA re-
placement parts to insure the safety and
quality of your mower is maintained.
7. Safety decals should be replaced if they
are missing or illegible. Decals may be
purchased from your HUSQVARNA dealer.
3. Install blade control rod into the bellcrank
on the left side of the tank support. Secure
rod with ring type retainer.
4. Refer to the section of this manual on
adjustments for the proper adjustment of the
linkages you are installing. The linkages were
set at the factory but must be checked before
operating mower to insure of the proper
setting.Always check 100% of the adjust-
ments before you operate the mower.
5. Connect the two halves of the wiring har-
ness together. The four prong connectors
have a locking tab that shows which way to
line them up and guarantees that they are
connected properly when the lock snaps.
6. Install the chute deflector to the side of the
mower deck. Bolt it into place using the two
5/16" x 1" screws and nuts pre-assembled
into the mounting tabs on the deck. Tighten
the screws very securely with the chute
completely covering the discharge opening
and tight against the side of deck.
FRONT CASTER WHEELS
1. Mount front caster wheel assemblies.
Installation includes fastening casters to front
of the cutter deck using 3/8 x 1" hex head
capscrews.
FUEL TANK
1. Place fuel tank on tank support, making sure
to get the studs through the slots on the top of
the tank support. Place the 5/16” flat washer,
spring, the other 5/16 flat washer and the 5/16”
nut on the stud. Snug 5/16” nut, but do not over
tighten.
THROTTLE INSTALLATION
1. Connect the throttle cable end to the
throttle mechanism on engine, leaving the
cable clamp loose. Push throttle lever on
console completely forward. Then pull the
cable through the clamp on engine and
tighten the cable clamp. Move the throttle
lever back and forth to ensure proper installa-
tion.
HANDLE ASSEMBLY
1. Align the upper mounting holes in handle
with the upper hole in the tank support.
2. Install two 3/8" x 1" screws through
matched holes and loosely install 3/8" nuts.
3.Align the lower holes and install hardware
as above, tighten upper and lower hardware.
9
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Setup & Adjustments
BRAKE ROD ADJUSTMENT
GAS LINE INSTALLATION
1. Make sure the rod is installed into the proper
hole in the brake arm. The brake rod should be
in bottom hole on the brake arm as shown
below. Never use the upper hole. The proper
adjustment can not be achived in this position.
1. The gas line is factory installed on the engine.
Attach loose end to fuel tank hose barb and
secure with hose clamp.
POSITIONING FRONT CASTER SPACERS
1. Using the cutting height chart, find the correct
number of spacers to be placed under the
caster swivel.
2. To increase braking. Turn the wing nut down
on the brake rod. Do not turn the wingnut down
to far as this will result a constant braking action
and will excessively wear the brake band and
cause premature failure.
2. Remove the lynch pin and washer from the
top of caster and reposition spacers to the
desired cutting height from the chart. See figure
# 2
Wingnut
AXLE HEIGHT ADJUSTMENT
1. To adjust rear axle, stop engine and place
drive levers in the neutral lock position, remove
spark plug wire.
2. Remove lower belt shield from underside of
rear deck for better access to axle adjustment
bolts.
Brake arm
3. Loosen axle pivot bolts and axle adjustment
bolts.
See figure # 1.
Brake Rod
4. Place a jack under center of rear deck raise
the jack slightly so axle adjustment bolts may be
removed.
5. With the jack raise or lower the rear deck to
the desired position using the chart to ensure
proper height. Reinstall the axle adjustment
bolts and tighten.
A tapered punch may be used to help align the
holes. See figure #1.
NOTE:
It may be necessary to readjust drive and brake
linkages.
NOTE:
To achieve the best quality cut, the blades
should be level with the ground or slightly tipped
forward
10
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Setup & Adjustments
REAR AXLE HEIGHT ADJUSTMENT
AXLEADJUSTMENT
BOLTS
POSITION A
PLACE JACK
HERE
POSITION B
POSITION
C
LOOSEN BOLTS EACH
SIDE
Figure 1
POSITION
D
CASTER HEIGHT ADJUSTMENT
MACHINERY BUSHING
1/2" SPACERS
CASTER SWIVEL
Figure 2
11
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Setup & Adjustments
CUTTING HEIGHT ADJUSTMENT CHART
NUMBER OF
SPACERS BELOW
CASTERARM
AXLE
POSITION
NUMBER OF 1/4" BLADE SPACERS
UNDER CUTTER HOUSING
CUTTING HEIGHT
(IN INCHES)
1 1/2
1 3/4
2
2 1/4
2 1/2
1 3/4
2
2 1/4
2 1/2
2 3/4
2 1/2
2 3/4
3
3 1/4
3 1/2
3
3 1/4
3 1/2
3 3/4
4
3 1/4
3 1/2
3 3/4
4
4 1/4
3 1/2
3 3/4
4
4 1/4
4 1/2
3 3/4
4
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
0
A
B
1
2
3
3
C
D
4
4 1/4
4 1/2
4 3/4
4
4 1/4
4 1/2
4 3/4
5
4
5
1. To quickly achieve small changes in cutting
heights, move the spacers from under the cutter
housing to above the cutter pulley. (Each spacer
moved will give an additional 1/4" of cutting
height ).
USE ONLY 4 BLADE SPACERS MAXIMUM
12
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Setup & Adjustments
OPERATOR PRESENCE SWITCH ADJUST-
MENT
BRAKE / TRACTION ADJUSMENT
1. Disconnect the brake linkage from the brake
band arm.
The operator presence switches can be ad-
justed by loosening the screws on the back side
of the console and sliding the switch left or right.
The O.P. switch plunger should just come in
contact with the O.P. lever when the operator
presence levers are released.
2.With the mower in gear, place the drive levers
in the drive position. Firmly pull back on the
handles until the tires slide to seat the drive
belts into the pulleys.
BLADE SWITCH ADJUSTMENT
3. Measure the distance between the back drive
lever slot and the neutral bail. It should be
between 3/16 and 1/4" but not exceeding 1/4".
See Figure #3.
The blade engagement switch can be adjusted
by loosening the screws on the blade engage-
ment bracket and moving the switch up or
down. The blade switch should be adjusted so
the plunger is fully depressed when the engage-
ment lever is fully disengaged.
4. If the clearance is less than 3/16”, disconnect
the drive lever from the idler arm by removing
the retaining ring.
ADJUSTMENTS - DRIVE BELTS
For all drive belts, tension should be set so that
belt vibration is minimized or eliminated when
belts are moving during normal operation. A
properly tensioned belt should have 1/4" to 3/8"
deflection at the center of belt span between
pulleys when blades are engaged.
5. Adjust the drive linkage to the proper clear-
ance by screwing it into the yoke at the drive
lever end of the linkage. This will achieve proper
clearance if the distance is less than 3/16”.
Screw the linkage out if it is greater than 1/4".
Blade drive belt tension is preset at the factory.
NOTE:
DO NOT over tighten belt. Excessive tension
will decrease belt and spindle bearing life.
BLADE DRIVE BELT ADJUSTMENTS
WARNING
BEFORE PERFORMING ADJUSTMENTS
ON BLADE BELT, TURN MOWER OFF,
CLOSE FUEL VALVE, AND DISCONNECT
SPARK PLUG WIRE.
1. Remove front deck belt shield.
2. Loosen whiz nut on turnbuckle.
3. Set belt tension when engagement lever is in
the engaged position.
4. To increase belt tension rotate turnbuckle
toward the rear of the mower until desired
tension is gained. Do not over tighten belts, to
much tension will reduce belt and spindle
bearing life. See figure # 6
Figure 3
NOTE:
5. Tighten whiz nut on turnbuckle and install belt
shield.
More or less brake pressure may be desired
depending on the operator or conditions of
operation. To increase pressure tighten the
wing nut on the brake linkage.
13
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AUXILIARY BLADE DRIVE BELT
(48" MODELS ONLY)
To adjust tension of the auxiliary belt rotate nut
on linkage that is attached to deck strap located
on the right side of cutter deck. See Figure 6.
BLADE ENGAGEMENT LEVER
The blade engagement lever needs to be
adjusted so the lever does not come in contact
with control panel when the lever is in the off
position.
TRANSMISSION DRIVE BELT
To adjust, remove the clevis pin from the yoke
and adjust by turning the yoke. The clevis pin
connects the blade engagement lever to the
yoke, and the yoke is connected to the blade
engagement rod that runs to the bellcrank on
the rear deck.
To increase the tension of the transmission belt,
loosen the nut on the underside of the transmis-
sion idler pulley located under the rear deck,
slide the idler assembly inward to increase
tension and tighten the nut to secure. See
figures 4 & 5.
BELT GUIDES
Belt guides under rear deck are adjusted as
shown in figures 4 and 5
NOTE: The blades should come to a stop
from maximum speed within 7 seconds after
disengaging.
36" MODEL
48" MODEL
1/4" CLEARANCE
1/8" CLEARANCE
103462
102036
1/2"
103462
102036
1/2"
TRANSMISSION BELT
TRANSMISSION BELT
ENGINE PULLEY
ENGINE PULLEY
103463
103462
1/8" CLEARANCE
TRANSMISSION IDLER PULLEY
1/8" CLEARANCE
TRANSMISSION IDLER PULLEY
Figure 5
Figure 4
14
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AUXILARYBELTADJUSTMENTROD
TURNBUCKLE
1/4"
IDLER PIVOT POINT
ENGAGEMENT IDLERASSEMBLY
Figure 6
BEFORE OPERATING
PRE-START CHECKLIST
Be thoroughly familiar with all controls and how
to use them before operating the mower. Know
beforehand how to stop the engine, drive
wheels, and mower blades in preparation for
possible emergency.
Make the following checks and perform the
services as required before each start up.
1. If required make cutting height adjustments
and drive linkage adjustments. Refer to pages 6,
7, and 8
EMERGENCY STOP
2. Check tires for proper inflation (front caster
tire pressure to be 50 lbs max. / rear tire pres-
sure to be 14 lbs max.
3. Check guards, deflectors, and covers to
make sure all are in place and secure.
4. Check blade belts for wear and correct
tension if worn or damaged, replace with original
part.
5. Clean interior and exterior surfaces of the
cutting deck and clean engine of any accumula-
tion of dirt or debris. Keep engine air intake clear
at all times.
Pull both drive levers firmly against handle grips
and hold them securely in place. Use thumbs to
lift the neutral bail up into the neutral slot. Then
stop engine by pulling throttle control back and
shut off the key switch. See figure # 7.
NORMAL OPERATING STOP
1. Pull both drive levers firmly toward the handle
grips to stop forward motion.
2. Use thumbs to lift neutral bail into the neutral
slots.
3. Move the throttle control to the slow position.
4. Move blade engagement lever to the off
position.
5. Move shift lever to the neutral position.
6. Stop engine by turning the key switch to the
off position.
6. Check engine oil add if needed (do not over-
fill)
refer to engine manual for oil specs.
7. Add fuel to tank after pushing the mower
outside where fumes can dissipate. Make sure
cap is tight after refueling.
NOTE
NOTE
CLOSE FUEL VALVE AT THE END OF
DO NOT ADD FUEL WHILE ENGINE
IS RUNNING OR WHILE ENGINE IS HOT.
EACH MOWING JOB !!
15
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Hydro Intermediate Walk Behind
Adjustment Instructions for:
MODELS / I.D. : 968999105 / WH3614A
968999111 / WH3615A
968999106 / WH4817A
CUTTING HEIGHT
1. Before changing cutting heights make sure the blades are off, key switch is off, and remove
spark plug wire or wires.
2. Cutting height ranges from 1 1/2” to 5” in 1/4” increments.
3. Cutting height can be changed three ways. Move one “C” spacer on the front casters,
change the blade spacers, or move the wheel motor assemblies.
4. a. To change heights on the rear deck loosen, do not remove, the top two carriage bolts on
both sides. (see fig. 1a)
b. Place a jack under the center of the rear deck remove the bottom two nuts on both sides.
Then remove the bottom two bolts both sides. (May have to raise the jack slightly to remove
bolts.)(see fig. 1b)
c. With the jack raise or lower the rear deck to the desired position using the chart, on page
7, to ensure proper height.
16
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d. Reinstall the bottom two bolts on both sides.(A tapered punch may be needed to help align
the holes.)
e. Retighten all four bolts both sides and remove jack.
5. Using the chart(on page 7), find the correct number of spacers to be placed under the caster
swivel.(see fig. 2)
NOTE: To achieve the best quality cut, the blades should be level with the ground or slightly tipped
forward.
REAR DECKADJ USTMENT
CARRIAGEBOLTS(a)
POSTION A
POSTION B
POSTION C
(b)
Figure1
CASTER HEIGHTADJ USTMENT
MACHINERYBUSHING
1/2" C -SPACERS
CASTER
SWIVEL
Figure2
17
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CUTTINGHEIGHTADJUSTMENTCHART
NUMBEROF
SPACERS BELOW
CASTER ARM
AXLE
POSITION
NUMBER OF 1/4" BLADE SPACERS
UNDERCUTTERHOUSING
CUTTINGHEIGHT
(ININCHES)
1 1/2
1 3/4
2
2 1/4
2 1/2
2
2 1/4
2 1/2
2 3/4
3
2 1/2
2 3/4
3
3 1/4
3 1/2
3
3 1/4
3 1/2
3 3/4
4
3 1/2
3 3/4
4
4 1/4
4 1/2
4
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
4
3
2
1
0
0
A
1
2
B
3
4
C
4 1/4
4 1/2
4 3/4
5
5
Note: To quickly achieve small changes in cutting
heights,movethespacersfromunderthecutterhousing
toabovethecutterpulley.(Eachspacermovedwillgive
an additional 1/4" of cutting height ).
USE ONLY 4 BLADE SPACERS MAXIMUM
MOTION CONTROL ADJUSTMENT
1. This adjustment must be made with the drive wheels rotating. Raise rear of the unit and block it
up so the wheels are free to rotate. CAUTION: Keep hands, feet and clothing away from rotating
tires.
2. It will be necessary to make this adjustment with the reverse detents disconnected.
3. With the ground speed lever in neutral or stop position, start the engine.
4. The thumb latches should be unlocked.
5. Turn the adjusting nut the proper direction until the wheel stops rotating. This is your neutral
position, repeat on other side. (see fig. 3)
6.After the neutral position is adjusted. You will need to readjust the short linkage. (see fig. 3)
7. Remove the two hairpins, swing the linkage out of the control lever and the thumb latch.
(see fig.3)
18
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8. Turn the short linkage the proper direction in the swivel, so that when the thumb latch is engaged
the wheel doesn’t turn (or it is in neutral). Reinstall the hairpins and repeat on other side.
(see fig. 3)
9. After these adjustments have been made it will be necessary to adjust the reverse detent. (See
reverse spring detent adjustment)
Figure 3
REVERSE SPRING DETENT ADJUSTMENT
1. To check if your reverse spring detent adjustment is set right. Make sure your ground speed
lever is pulled back to the neutral position. Release the thumb latches (both sides) and pull up on
the control levers at the same time. Then release the levers, it should return to neutral. If it does not,
the following adjustments need to be made.
2. Stop engine and remove key.
3. Ground speed lever should be in the neutral or stop position and the thumb latches unlocked.
4. Loosen the two 1/4” bolts holding the reverse detent bracket. Slide the bracket up or down till it
just touches the “L” shape stop under the console. Holding the bracket against the stop retighten
the two 1/4” bolts. (Repeat on other side if needed.)
(see fig. 4 )
Figure 4
(Right side cut away view of console.)
19
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BLADE DRIVE BELT ADJUSTMENT
1. Before performing adjustments on blade belt, turn the mower off and disconnect spark plug wire
or wires.
2. Remove front deck belt shield.
3. Loosen nut on turnbuckle.
4. Set belt tension when blade engagement lever is in the engaged position.
5. To increase belt tension rotate turnbuckle toward the rear of the mower until desired tension is
gained. Do not over tighten belts, to much tension will reduce belt and spindle bearing life.
(see fig. 5)
AUXILIARY BLADE BELT
1. Before performing adjustments on blade belt, turn the mower off and disconnect spark plug wire
or wires.
2. To adjust tension on the auxiliary belt rotate nut on linkage that is attached to deck strap located
on the right side of cutter deck. (see fig. 5)
AUXILARY BELT ADJUSTMENT
ROD
TURNBUCKLE
1/4"
IDLER PIVOT POINT
ENGAGEMENTIDLER
ASSEMBLY
Figure 5
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ENGINE BELT GUIDES
1. Before performing adjustments on belt guides, turn the mower off and disconnect spark plug wire
or wires.
2. Belt guides under the engine should be adjusted as shown in figure 6.
Figure 6
PUMP BELT
1. Before performing adjustments on pump belt, turn the mower off and disconnect spark plug wire
or wires.
2. Check tension on the belt. If it feels loose adjustment will need to be made.
3. Loosen the nut on the bottom of the idler pulley.
4. Slide the idler pulley against the belt, retighten the nut while applying pressure to the idler
pulley. (see fig. 6)
INTERLOCK SAFETY SYSTEM
The interlock modules function is to prevent the engine form starting if the blade and/or ground
speed lever are engaged. It also causes engine shutdown if the operator falls from, or attempts to
leave the operator position while the blades or ground speed lever are engaged. After the engine
starts, the operator must hold either the left or right O.P. lever down before engaging the blades or
moving the ground speed lever. If neither O.P. lever is held the engine will stop. Check the function
of the safety electrical system on a regular basis.
1. Engine must kill if blades are engaged without O.P. levers held down.
2. Engine must kill if ground speed lever is taken out of neutral without holding down O.P. levers.
3. Engine must not start unless blades are off and ground speed lever is in the neutral position.
4. Do not operate the mower if the interlock safety system allows operation or starting in any unsafe
condition.
21
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ETS Hydro Intermediate Walk Behind
Models:
968999127 / WHF4215ETS
968999129 / WHF4818ETS
968999130 / WHF5218ETS
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CUTTING HEIGHT:
1. Stop the mower and disengage the blades.
2. Raise the deck height lever to the transport position.
3. Remove the height adjustment pin and place it in the desired cutting height hole. Move deck height
lever down onto the pin and mow. NOTE: anti-scalp rollers must be in the proper position for maximum
deck floatation. See the decal on the front deck.
MOWER DECK LEVELING:
1. Position mower on a flat surface and stop engine.
2. Check the tire pressure of all four tires. Inflation should be 15 psi.
3. Place two 2x4’s on edge under the cutting deck from front to rear and lower the deck down onto the
2x4’s.
4. Adjust the four upper chain bolts “H” to the center of the slot in the deck lift arms (See Fig 2). NOTE:
make sure deck lift blocks are tightly bolted to the frame .
5. Check chains for equal tension. If unequal, adjust upper chain bolt in slot.
6. Place deck in the 5" cutting height and measure from the cutting edge of the blade to a flat surface
to check deck cutting height.
MOTION CONTROL ADJUSTMENTS
1. This Adjustment must be made with the drive wheels rotating. Raise rear of the unit and block it
up so the wheels are free to rotate. CAUTION: Keep hands, feet and clothing away from rotating
tires.
2. With the ground speed lever in the neutral position, start the engine.
3. Lift the neutral bail into the neutral slots in the drive levers.
4. Adjust the drive linkages by loosening or tightening the nut on the bottom of the drive linkage until
the wheels stop.
5. With 2 9/16” wrenches, adjust the reverse detent springs on the pump arms so that the head of
the bolt is approximately 1/16” from the top of the rear deck.
6. Push the ground speed lever forward to full speed and pull back to neutral position to be sure that
the wheels stop. This should be done several times and any readjustments made that are required.
23
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ADJUSTMENTS
FRONT DECK BELT ROUTING:
FIGURE 3
PUMP BELT
1. Before performing adjustments on pump belt, turn the mower off and disconnect spark plug wire or
wires.
2. Check tension on the belt. If it feels loose adjustment will need to be made.
3. Loosen the nut on the bottom of the idler pulley.
4. Slide the idler pulley against the belt, retighten the nut while applying pressure to the idler
pulley. (see fig. 6)
INTERLOCK SAFETY SYSTEM
The interlock modules function is to prevent the engine form starting if the blade and/or ground speed
lever are engaged. It also causes engine shutdown if the operator falls from, or attempts to leave the
operator position while the blades or ground speed lever are engaged. After the engine starts, the
operator must hold either the left or right O.P. lever down before engaging the blades or moving the
ground speed lever. If neither O.P. lever is held the engine will stop. Check the function of the safety
electrical system on a regular basis.
1. Engine must kill if blades are engaged without at least one O.P. lever held down.
2. Engine must kill if ground speed lever is taken out of neutral without holding down at least one O.P.
lever.
3. Engine must not start unless blades are off and ground speed lever is in the neutral position.
4. Do not operate the mower if the interlock safety system allows operation or starting in any unsafe
condition.
24
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Mid Mount Zero Turn Riders 42” & 48”
Setup Instructions for:
MODEL / I.D. :
968999157 / ZTHKH4818A
968999158 / ZTHKH4820A
968999167 / ZTHKW4218A
968999168 / ZTHKW4818A
968999169 / ZTHKW4821A
ADJUSTMENTS
PARK BRAKE:
1. Stop engine and remove key. While the park brake lever”A” is in the on position. The distance
between the swivel”C” and the bolt head”B” should be 3/8” to 1/2” approximately.(See Fig. 2)
2. If adjustment is needed, using two 1/2” wrenches, loosen the nut”F” above the turnbuckle”G”
while holding the turnbuckle”G” from turning. After the nut”F” is loose and out of the way. While
holding the bolt head”B” from turning. Turn the turnbuckle”G” the proper direction to lengthen the
distance or to shorten the distance. After the proper distance is obtained retighten the nut”F”
against the turnbuckle”G”.
3. While the park brake lever”A” is still in the on position, measure the length of the spring”D”.
Should measure 2”.(See Fig. 2)
4. If adjustment is needed loosen or tighten the nut”E” below the spring”D”. While holding the
turnbuckle”G” to keep the assembly from turning.
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FIGURE 2
CUTTING HEIGHT:
1. Stop the mower and disengage the blades.
2. Raise the deck height lever to the transport position.
3. Remove the height adjustment pin and place it in the desired cutting height hole. Move deck
height lever down onto the pin and mow. NOTE: anti-scalp rollers must be in the proper position
for maximum deck floatation. See the decal on the front deck.
MOWER DECK LEVELING:
1. Position mower on a flat surface and stop engine.
2. Check the tire pressure of all four tires. Inflation should be 15 psi.
3. Place two 2x4’s on edge under the cutting deck from front to rear and lower the deck down
onto the 2x4’s.
4. Adjust the four upper chain bolts “H” to the center of the slot in the deck lift arms (See Fig 2).
NOTE: make sure deck lift blocks are tightly bolted to the frame .
5. Check chains for equal tension. If unequal, adjust upper chain bolt in slot.
6. Place deck in the 5" cutting height and measure from the cutting edge of the blade to a flat
surface to check deck cutting height.
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FRONT DECK BELT ROUTING: (See Fig. 4)
THROTTLE LEVER TENSION:
1. Stop engine and remove key.
2. If throttle lever becomes loose, tension may be adjusted by tightening the pivot bolt. The pivot
bolt holds the throttle arm to the throttle mounting bracket which is located under the console.
Access is gained by removing the foot plate and the kick plate. See page 3.
REVERSE SPRING DETENT ADJUSTMENT:
1. Stop engine and remove key.
2. Pull the motion control lever back to the reverse position and release the lever. When the lever
stops it should be in line with the neutral slot, so you can rotate the lever out with out hitting the
side of the console.
3. If adjustment is needed put the seat in the rear slide position, tilt seat forward, remove seat
lanyard from seat frame, and rotate seat forward to rest on the frame.
4. On the back of the console where the spring is fastened. Loosen 3/8” nut and bolt enough to
allow the bolt to slide in the slot.(See Fig. 5a)
5. Rotate the motion control lever out into the neutral slot. While the lever is swung out pull it
against the back edge of the neutral slot. Holding the lever adjust the spring by sliding the bolt in
the slot to remove all the slop and retighten the 3/8” nut and bolt.(Repeat steps on other side if
needed.)(See Fig. 5a)
6. Check your adjustment by repeating step two.
7. If no more adjustment is needed refasten the seat lanyard to the seat frame.
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Figure 5a
(Left side cut away view)
Figure 5b
(Left side cut away view)
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ADJUSTMENTS
MOTION CONTROL LINKAGE ADJUSTMENT:
1. This adjustment must be made with the drive wheels rotating. Raise rear of the unit and block
it up so the wheels are free to rotate. CAUTION: Keep hands, feet and clothing away from
rotating tires.
2. Tilt seat forward and remove the seat lanyard from seat so the seat can rotate down onto the
frame. Make sure the seat is adjusted toward the rear of the unit so it clears the controls on the
console.
3. Place a 2x4 board approximately 10 to 12 inches long between the foot plate and the center of
the seat to engage the seat safety switch. NOTE: You may want to cover the end of the 2x4 with
a rag to protect the seat from marring.
4. Loosen the nuts directly behind each ball joint on both rods that connect the pump arm to the
motion control assemblies. (See Fig 5b )
5. Start the engine. The park brake must be engaged and the motion control levers must be in the
neutral slot (See figure 6 page10) to start the engine. Run engine at approximately 1/2 throttle.
6. Release park brake to allow wheels to rotate. CAUTION: Keep hands, feet and clothing away
from rotating tires.
7. Begin with either side and put the motion control lever into the neutral position. Adjust the
motion control linkage by rotating the double nuts on the rod in the proper direction until the wheel
stops rotating (See Fig 5b ).
Move the motion control lever forward then into the neutral position and place it into the neutral
slot. The wheel must be stopped completely at this point. Now do the same in reverse and re-
lease the lever. The lever should return to neutral on its own. If not see reverse spring detent
adjustment section.
8. Run engine at full throttle to make sure wheels do not rotate. Readjust if any rotation occurs.
9. Repeat on the opposite side and tighten nuts against ball joints.
10. Remove the 2x4 board and make sure the seat wiring is connected to the wiring harness.
WARNING: Seat must be connected for safety interlock system to properly function.
29
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Mid Mount Zero Turn Riders 52” & 61”
Generation 2
Adjustment instructions for:
Models:
968999159 / ZTH5221KAA
968999160 / ZTH5223KAA
968999161 / ZTH5223KOA
968999162 / ZTH5223KOLA
968999163 / ZTH5225KOA
968999165 / ZTH6125KOA
968999166 / ZTH6125KAA
968999173 / ZTH5225KAA
30
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Adjustments
Cutting Height
Stop the mower and disengage the blades.
Lift Lever
Raise the deck height lever to the transport
position.
Deck Height
Adjusment
Plates
Remove the height adjustment pin and
place it in the desired cutting height hole.
Lower the lift lever down onto pin. NOTE:
Anti-scalp rollers must be in the proper
position for maximum deck floatation. See
the decal on the front deck for proper
settings. FIG - 5
Mower Deck Leveling
Position machine on a flat surface. Preferably
level concrete.
FIG - 5
Check the tire pressure in all four tires.
Inflation should be 15 psi.
Place 2x4’s on edge under the cutting deck
from front to rear and lower the deck down
onto 2x4’s.
Deck Lift
Arm
Adjust the four lower chain bolts to the center
slots on the deck. FIG - 6 NOTE: Make sure
the lift blocks under the frame are tightly
bolted to the frame.
Slots For
Chain
Adjustment
FIG - 6
Check the chains for equal tension. If unequal
adjust lower chain bolt in slot.
Reverse Detent
Adjustment Slot
Place the deck in the 6” cutting height and
measure from the cutting edge of the blade to
the flat level surface to check the deck cutting
height.
Reverse De-
tent
Spring
Motion
Control
Lever
Throttle Lever Tension
Stop engine and remove key.
Throttle lever tension may be adjusted by
tightening the pivot bolt. The pivot bolt se-
cures the throttle arm to the mounting bracket
which is mounted to the console. Access is
gained by removing the console.
FIG - 7
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Reverse Spring Detent Adjustment
Stop engine and remove key.
Spring
1/4” Gap
Pull the motion control lever back to the
reverse position and release the lever. When
the lever stops it should be in line with the
neutral slot, so you can move the lever into
neutral slot with out hitting the side of the
console frame.
Loosen
here
FIG - 8
If adjustment is required put the seat in the
rear most position on the slide, tilt the seat
forward, remove the seat rod from seat frame
and fold seat over forward onto the frame.
On the back of the console where the spring
is fastened, loosen the 3/8” nut and bolt
enough to allow the bolt to slide in the slot.
FIG - 7
Rotate the motion control lever out into the
neutral slot. While the lever is swung out into
the neutral slot pull it against the the back
edge of the neutral slot. Holding the lever
adjust the spring by sliding the bolt in the slot
to remove all the slop and retighten the bolt.
Check your adjustment by repeating the
second step in this process.
If no more adjustment is needed reassemble
the seat rod to the seat frame.
Park Brake Adjustment
When park brake is in the engaged position
the distance between the trunion and the bolt
head at the rear of the assembly should
measure 1/4” and the spring should measure
1.5” +/- 1/8”. To adjust the 1/4” gap between
the trunion and the bolt head loosen the nut
against the yoke then turn the bolt head the
proper direction to achive the proper gap. To
adjust the length of the spring turn the nut
against the spring the proper direction to
lengthen or shorten the spring. This adjust-
ment is the same for both sides. FIG - 8
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Motion Control Linkage Adjustment
This adjustment must be made with the rear
wheels rotating. Raise the rear of the ma-
chine and block it up so the wheels are free
to rotate. CAUTION: Keep hands, feet and
clothing away from rotating tires.
Tilt seat forward and remove the seat rod so
the seat may rotate forward onto the frame.
Place a 2x4 board between the foot plate
and the center of the seat to engage the seat
safety switch.
Loosen the nuts directly behind each ball joint
on both rods that connect the pump arm to
the motion control assemblies. FIG - 9
Motion
Control
Lever
Start the engine. The park brake must be
engaged and the motion control levers in the
neutral slots to start the engine. Run the
engine approximately half throttle
Turn Here
ToAdjust
Release park brake to allow the wheels to
rotate.
Begin with either side and put the motion
control lever into the neutral position.Adjust
the motion control linkage by rotating the
double nuts in the proper direction until the
wheel stops rotating. FIG - 9 Move the motion
control lever forward then into the neutral
position and place it into the neutral slot. The
wheel must be stopped completely at this
point. Now do the same in reverse and
release the lever. The lever should return to
neutral on its own. If not see reverse spring
detent adjustment.
Loosen Here
(Lt. Hand
Thds.)
Loosen Here
FIG - 9
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