Husqvarna Gear Drive User manual

MANUALNO.539105471REV.01(03/14/02)
Adjustments manual for:
GearDrive, ETSGearDrive,Walk Hydro, ETS Walk Hydro, Mini Rider, Large Rider Gen 2

2
MODELS /I.D. :968999101 /W3212A
968999107 /W3213A
968999102 /W3612A
968999108 /W3613A
968999103 /W3614A
968999104 /W4814A
968999110 /W4815A
Adjustment Instructions for:
Gear Drive Intermediate Walk Behind

3
ADJUSTMENTSFORADJUSTMENTSFOR
ADJUSTMENTSFORADJUSTMENTSFOR
ADJUSTMENTSFOR
HUSQVARNA32",36"AND48"COMMERCIALMOWERSHUSQVARNA32",36"AND48"COMMERCIALMOWERS
HUSQVARNA32",36"AND48"COMMERCIALMOWERSHUSQVARNA32",36"AND48"COMMERCIALMOWERS
HUSQVARNA32",36"AND48"COMMERCIALMOWERS
AXLEHEIGHTADJUSTMENTAXLEHEIGHTADJUSTMENT
AXLEHEIGHTADJUSTMENTAXLEHEIGHTADJUSTMENT
AXLEHEIGHTADJUSTMENT
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.
3. Loosen axle pivot bolts and axle adjustment bolts.
See figure # 1.
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
BRAKE/TRACTIONADJUSMENTBRAKE/TRACTIONADJUSMENT
BRAKE/TRACTIONADJUSMENTBRAKE/TRACTIONADJUSMENT
BRAKE/TRACTIONADJUSMENT
1. Disconnect the brake linkage from the brake band
arm.
2. With the mower in gear, place the traction levers in the
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
traction lever rod and the bottom of the thumb latch slot.
It should be between 3/16" to 1/4", but not exceeding 1/
4". See Figure # 3
HANDLE
TRACTION LEVER
THUMB LATCH
3/16" to 1/4" CLEARANCE
O.P. LEVER
Figure 3
OPERATORPRESENCESWITCHADJUSTMENTOPERATORPRESENCESWITCHADJUSTMENT
OPERATORPRESENCESWITCHADJUSTMENTOPERATORPRESENCESWITCHADJUSTMENT
OPERATORPRESENCESWITCHADJUSTMENT
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
operator presence levers are released.
BLADESWITCHADJUSTMENTBLADESWITCHADJUSTMENT
BLADESWITCHADJUSTMENTBLADESWITCHADJUSTMENT
BLADESWITCHADJUSTMENT
The blade engagement switch can be adjusted by
loosening the screws on the flange under the control
panel and moving the switch in or out. The blade switch
should be adjusted so the plunger is fully depressed
when the engagement lever is fully disengaged.
ADJUSTMENTS-DRIVEBELTSADJUSTMENTS-DRIVEBELTS
ADJUSTMENTS-DRIVEBELTSADJUSTMENTS-DRIVEBELTS
ADJUSTMENTS-DRIVEBELTS
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.
NOTE:NOTE:
NOTE:NOTE:
NOTE:
DO NOT over tighten belt. Excessive tension will
decrease belt and spindle bearing life.
4. If the clearance is less than 3/16", disconnect the
traction rod from the traction lever by removing the
hairpin cotter.
5. Adjust the traction rod to the proper clearance by
screwing it out of the swivel if clearance is less than 3 /
16".
NOTE:NOTE:
NOTE:NOTE:
NOTE:
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.

4
AXLE ADJUSTMENT BOLTS
POSITION
A
POSITION
B
POSITION
C
POSITION
D
AXLE PIVOT BOLTS
PLACE JACK HERE
Figure 1
REARAXLEHEIGHTADJUSTMENTREARAXLEHEIGHTADJUSTMENT
REARAXLEHEIGHTADJUSTMENTREARAXLEHEIGHTADJUSTMENT
REARAXLEHEIGHTADJUSTMENT
CASTER
SWIVEL
1/2" SPACERS
MACHINERY BUSHING
CASTERHEIGHTADJUSTMENTCASTERHEIGHTADJUSTMENT
CASTERHEIGHTADJUSTMENTCASTERHEIGHTADJUSTMENT
CASTERHEIGHTADJUSTMENT
Figure 2
LOOSEN BOLTS EACH SIDE

5
BLADEDRIVEBELTADJUSTMENTSBLADEDRIVEBELTADJUSTMENTS
BLADEDRIVEBELTADJUSTMENTSBLADEDRIVEBELTADJUSTMENTS
BLADEDRIVEBELTADJUSTMENTS
WARNINGWARNING
WARNINGWARNING
WARNING
BEFOREPERFORMINGADJUSTMENTSONBEFOREPERFORMINGADJUSTMENTSON
BEFOREPERFORMINGADJUSTMENTSONBEFOREPERFORMINGADJUSTMENTSON
BEFOREPERFORMINGADJUSTMENTSON
BLADEBELT,TURNMOWEROFF,CLOSEFUELBLADEBELT,TURNMOWEROFF,CLOSEFUEL
BLADEBELT,TURNMOWEROFF,CLOSEFUELBLADEBELT,TURNMOWEROFF,CLOSEFUEL
BLADEBELT,TURNMOWEROFF,CLOSEFUEL
VALVE,ANDDISCONNECTSPARKPLUGWIRE.VALVE,ANDDISCONNECTSPARKPLUGWIRE.
VALVE,ANDDISCONNECTSPARKPLUGWIRE.VALVE,ANDDISCONNECTSPARKPLUGWIRE.
VALVE,ANDDISCONNECTSPARKPLUGWIRE.
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
5. Tighten whiz nut on turnbuckle and install belt shield.
AUXILIARYBLADEDRIVEBELTAUXILIARYBLADEDRIVEBELT
AUXILIARYBLADEDRIVEBELTAUXILIARYBLADEDRIVEBELT
AUXILIARYBLADEDRIVEBELT
(48"MODELSONLY)(48"MODELSONLY)
(48"MODELSONLY)(48"MODELSONLY)
(48"MODELSONLY)
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.
Figure 6
AUXILARY BELT ADJUSTMENT
ROD
IDLER PIVOT POINT
TURNBUCKLE
ENGAGEMENT IDLER
ASSEMBLY
1/4"
5
4

6
SETUPANDADJUSTMENTSFORSETUPANDADJUSTMENTSFOR
SETUPANDADJUSTMENTSFORSETUPANDADJUSTMENTSFOR
SETUPANDADJUSTMENTSFOR
HUSQVARNA32",36"AND48"COMMERCIALMOWERSHUSQVARNA32",36"AND48"COMMERCIALMOWERS
HUSQVARNA32",36"AND48"COMMERCIALMOWERSHUSQVARNA32",36"AND48"COMMERCIALMOWERS
HUSQVARNA32",36"AND48"COMMERCIALMOWERS
BLADEENGAGEMENTLEVERBLADEENGAGEMENTLEVER
BLADEENGAGEMENTLEVERBLADEENGAGEMENTLEVER
BLADEENGAGEMENTLEVER
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
connected to the blade engagement rod that runs to the
bellcrank on the rear deck.
TRANSMISSIONDRIVEBELTTRANSMISSIONDRIVEBELT
TRANSMISSIONDRIVEBELTTRANSMISSIONDRIVEBELT
TRANSMISSIONDRIVEBELT
To increase the tension of the transmission belt, loosen
the nut on the underside of the transmission 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.
BELTGUIDESBELTGUIDES
BELTGUIDESBELTGUIDES
BELTGUIDES
Belt guides under rear deck are adjusted as shown in
figures 4 and 5
NOTE: The blades should come to a stop fromNOTE: The blades should come to a stop from
NOTE: The blades should come to a stop fromNOTE: The blades should come to a stop from
NOTE: The blades should come to a stop from
maximum speed within 7 seconds aftermaximum speed within 7 seconds after
maximum speed within 7 seconds aftermaximum speed within 7 seconds after
maximum speed within 7 seconds after
disengaging.disengaging.
disengaging.disengaging.
disengaging.
TRANSMISSION IDLER PULLEY
32"&36"MODEL32"&36"MODEL
32"&36"MODEL32"&36"MODEL
32"&36"MODEL 48"MODEL48"MODEL
48"MODEL48"MODEL
48"MODEL
Figure 4 Figure 5
TRANSMISSION IDLER PULLEY
TRANSMISSION BELT
1/4" CLEARANCE
1/2"
ENGINE PULLEY
1/8" CLEARANCE
1/8" CLEARANCE
TRANSMISSION BELT
1/8" CLEARANCE
1/2"
ENGINE PULLEY
102036
103463
103462 102036 103462
103462

7
SETUPANDADJUSTMENTSFORSETUPANDADJUSTMENTSFOR
SETUPANDADJUSTMENTSFORSETUPANDADJUSTMENTSFOR
SETUPANDADJUSTMENTSFOR
HUSQVARNA 32",36"AND48"COMMERCIALMOWERSHUSQVARNA 32",36"AND48"COMMERCIALMOWERS
HUSQVARNA 32",36"AND48"COMMERCIALMOWERSHUSQVARNA 32",36"AND48"COMMERCIALMOWERS
HUSQVARNA 32",36"AND48"COMMERCIALMOWERS
CUTTINGHEIGHTADJUSTMENTCHARTCUTTINGHEIGHTADJUSTMENTCHART
CUTTINGHEIGHTADJUSTMENTCHARTCUTTINGHEIGHTADJUSTMENTCHART
CUTTINGHEIGHTADJUSTMENTCHART
AXLE
POSITION
NUMBER OF
SPACERS BELOW
CASTER ARM
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 1/4
4 1/2
4 3/4
4
4 1/4
4 1/2
4 3/4
5
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
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 ).
0
1
2
3
5
3
4
4
B
A
D
C
USE ONLY 4 BLADE SPACERS MAXIMUM

8
Models:
968999117 / W3613ETS
968999120 / W4815ETS
ETS Gear Drive Intermediate Walk Behind

9
MAINTENANCE
1.Keepallnuts,bolts,andscrewstight to
keepmower in safe operating condition.
2.Neverstorethemowerwithgas in the tank
insideabuildingwherefumescanreachan
openflame or spark. Allowengine to cool
beforestoringinanenclosure.
3.Toreducefirehazard,keepmowerfreeof
grass,leaves,orexcessivegrease.
4.Checkgrasscatcher assembly frequently
for wear or deterioration. Replace bag if
looseseams or tears are evident.
5.Haveyourmowerinspectedandserviced
eachyearbyanauthorizedHUSQVARNA
dealer. Determine if any additional devices
areavailablewhichmightupgradethe safety
ofyourmower.
6.UseonlyauthenticHUSQVARNA re-
placementpartstoinsurethe safety and
qualityofyourmoweris maintained.
7.Safetydecalsshouldbereplacedif they
are missing or illegible. Decals may be
purchasedfromyourHUSQVARNA dealer.
FRONT CASTER WHEELS
1.Mountfrontcaster wheel assemblies.
Installationincludesfasteningcasterstofront
ofthecutterdeckusing3/8x1"hexhead
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.
HANDLE ASSEMBLY
1.Align theuppermountingholesinhandle
withtheupperhole in thetanksupport.
2.Installtwo3/8" x1"screwsthrough
matchedholesandloosely install3/8"nuts.
3.Alignthelowerholesandinstallhardware
asabove,tightenupperandlower hardware.
Setup & Adjustments
LINKAGE INSTALLATION
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.Installshiftertotransmission with 1/4" x1"
screws.
Theshifterislocatedintheinner box and
hardwareispre-assembledintothebracket
onthetransmission.
3.Installbladecontrol rod intothebellcrank
ontheleftsideofthetank support. Secure
rodwithringtyperetainer.
4.Refertothesectionofthis manual on
adjustmentsfortheproper adjustmentofthe
linkagesyouareinstalling.Thelinkages were
setatthefactorybutmustbecheckedbefore
operatingmowertoinsureoftheproper
setting.Alwayscheck100%oftheadjust-
mentsbeforeyouoperatethe mower.
5.Connectthetwohalves ofthewiringhar-
nesstogether.Thefourprongconnectors
havealockingtabthat shows whichwayto
linethemupand guaranteesthattheyare
connectedproperlywhenthe locksnaps.
6.Installthechutedeflector tothesideofthe
mowerdeck.Boltitintoplaceusingthetwo
5/16"x1"screwsandnutspre-assembled
intothemountingtabs on thedeck.Tighten
thescrewsvery securelywiththechute
completelycoveringthedischargeopening
and tight against the side of deck.
THROTTLE INSTALLATION
1.Connectthethrottlecable end tothe
throttlemechanismonengine,leavingthe
cableclamploose. Pushthrottlelever on
consolecompletelyforward. Thenpullthe
cablethroughtheclampon engine and
tightenthecableclamp. Move the throttle
leverbackandforthtoensure proper installa-
tion.

10
Setup & Adjustments
GAS LINE INSTALLATION
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. 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
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.
3. Loosen axle pivot bolts and axle adjustment
bolts.
See figure # 1.
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
BRAKE ROD ADJUSTMENT
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.
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.
Wingnut
Brake Rod
Brake arm

11
AXLEADJUSTMENT
BOLTS
POSITION A
POSITION B
POSITION
C
POSITION
D
PLACE JACK
HERE
Figure 1
REAR AXLE HEIGHT ADJUSTMENT
LOOSEN BOLTS EACH
SIDE
CASTER SWIVEL
1/2" SPACERS MACHINERYBUSHING
CASTER HEIGHT ADJUSTMENT
Figure 2
Setup & Adjustments

12
CUTTING HEIGHT ADJUSTMENT CHART
AXLE
POSITION NUMBEROF
SPACERS BELOW
CASTERARM
NUMBER OF 1/4" BLADE SPACERS
UNDERCUTTERHOUSING CUTTINGHEIGHT (ININCHES)
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 1/4
4 1/2
4 3/4
4
4 1/4
4 1/2
4 3/4
5
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
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 ).
0
1
2
3
5
3
4
4
B
A
D
C
USEONLY4BLADESPACERSMAXIMUM
Setup & Adjustments

13
BRAKE / TRACTION ADJUSMENT
1. Disconnect the brake linkage from the brake
band arm.
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.
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.
4. If the clearance is less than 3/16”, disconnect
the drive lever from the idler arm by removing
theretainingring.
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".
NOTE:
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.
OPERATOR PRESENCE SWITCH ADJUST-
MENT
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.
BLADE SWITCH ADJUSTMENT
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.
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.
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
theengagedposition.
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
5. Tighten whiz nut on turnbuckle and install belt
shield.
Figure 3
Setup & Adjustments

14
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.
TRANSMISSION DRIVE BELT
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.
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.
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.
TRANSMISSIONIDLERPULLEY
36" MODEL 48" MODEL
Figure 4 Figure 5
TRANSMISSIONIDLERPULLEY
TRANSMISSIONBELT
1/4"CLEARANCE
1/2"
ENGINEPULLEY
1/8"CLEARANCE
1/8"CLEARANCE
TRANSMISSIONBELT
1/8"CLEARANCE
1/2"
ENGINEPULLEY
102036
103463
103462 102036 103462
103462

15
Figure 6
AUXILARYBELTADJUSTMENTROD
IDLERPIVOTPOINT
TURNBUCKLE
ENGAGEMENTIDLERASSEMBLY
1/4"
BEFORE OPERATING
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.
EMERGENCY STOP
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.
NOTE
CLOSE FUEL VALVE AT THE END OF
EACH MOWING JOB !!
PRE-START CHECKLIST
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
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.
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
DO NOT ADD FUEL WHILE ENGINE
IS RUNNING OR WHILE ENGINE IS HOT.

16
Adjustment Instructions for:
MODELS /I.D. :968999105 /WH3614A
968999111 /WH3615A
968999106 /WH4817A
CUTTING HEIGHT
1.Beforechangingcuttingheightsmakesuretheblades are off, key switch is off,andremove
sparkplug wire or wires.
2.Cuttingheightrangesfrom11/2”to5”in 1/4” increments.
3.Cuttingheightcanbechangedthree ways. Move one“C”spaceronthefrontcasters,
changethebladespacers,ormovethewheelmotor assemblies.
4.a.Tochangeheightsonthereardeckloosen,donotremove,thetoptwocarriagebolts on
both sides. (see fig. 1a)
b.Placeajackunderthecenterofthereardeckremovethebottomtwonutsonbothsides.
Thenremovethebottomtwobolts both sides. (Mayhavetoraisethejackslightly to remove
bolts.)(seefig.1b)
c. With the jack raise or lower the rear deck to the desired position using the chart, on page
7,toensureproperheight.
Hydro Intermediate Walk Behind

17
d.Reinstallthebottomtwoboltsonbothsides.(Ataperedpunchmaybeneededto help align
theholes.)
e.Retightenallfourboltsbothsidesandremovejack.
5.Usingthechart(onpage7),findthecorrectnumberofspacers to be placed under the caster
swivel.(seefig.2)
NOTE:Toachievethe best quality cut,thebladesshouldbelevelwiththe ground or slightlytipped
forward.
CASTER
SWIVEL
1/2" ”C”- SPACERS
MACHINERY BUSHING
CASTERHEIGHTADJUSTMENTCASTERHEIGHTADJUSTMENT
CASTERHEIGHTADJUSTMENTCASTERHEIGHTADJUSTMENT
CASTERHEIGHTADJUSTMENT
Figure 2
CARRIAGE BOLTS(a)
POSTION A
POSTION B
POSTION C
(b)
Figure 1
REARDECKADJUSTMENTREARDECKADJUSTMENT
REARDECKADJUSTMENTREARDECKADJUSTMENT
REARDECKADJUSTMENT

18
CUTTINGHEIGHTADJUSTMENTCHART
Note: 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
AXLE
POSITION
NUMBER OF
SPACERS BELOW
CASTER ARM
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
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 1/4
4 1/2
4 3/4
5
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
1
2
3
4
5
B
A
C
MOTION CONTROL ADJUSTMENT
1. Thisadjustmentmustbemadewiththedrivewheelsrotating. Raiserearoftheunitandblock it
upsothewheelsarefreetorotate.CAUTION:Keephands,feetandclothingawayfromrotating
tires.
2.Itwillbenecessary to makethisadjustmentwiththereverse detents disconnected.
3. Withthegroundspeedleverinneutralor stop position, start theengine.
4.Thethumblatchesshouldbeunlocked.
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 neutralpositionisadjusted.You willneedtoreadjusttheshortlinkage.(seefig.3)
7.Removethetwo hairpins, swingthelinkageoutof the controlleverandthethumb latch.
(seefig.3)

19
Figure 4
(Rightsidecutawayviewof console.)
Figure 3
REVERSE SPRING DETENT ADJUSTMENT
1. To check if your reverse spring detent adjustment is set right. Make sure your ground speed
leverispulledback tothe neutral position. Releasethethumblatches(bothsides) and pullupon
thecontrolleversatthesametime. Thenreleasethelevers,itshouldreturntoneutral.Ifitdoesnot,
thefollowingadjustmentsneedto be made.
2. Stopengineandremovekey.
3.Groundspeedlevershould be intheneutralorstoppositionand the thumblatchesunlocked.
4.Loosenthetwo1/4” bolts holding thereversedetentbracket.Slidethebracket up ordowntillit
justtouchesthe“L”shapestopundertheconsole.Holding the bracket against the stop retighten
the two 1/4” bolts. (Repeat on other side if needed.) (see fig. 4 )
8.Turntheshortlinkagetheproperdirectionintheswivel,sothatwhenthethumb latchisengaged
the wheeldoesn’t turn(oritisinneutral). Reinstall the hairpins andrepeatonotherside.
(see fig. 3)
9.Aftertheseadjustments havebeenmadeitwill benecessarytoadjustthe reversedetent.(See
reversespringdetentadjustment)

20
Figure 5
AUXILARY BELT ADJUSTMENT
ROD
IDLER PIVOT POINT
TURNBUCKLE
ENGAGEMENT IDLER
ASSEMBLY
1/4"
BLADE DRIVE BELT ADJUSTMENT
1. Beforeperformingadjustmentsonbladebelt,turnthemower offanddisconnect sparkplugwire
orwires.
2.Removefrontdeckbeltshield.
3.Loosennut onturnbuckle.
4.Setbelttensionwhenbladeengagementleverisintheengaged position.
5.Toincreasebelttensionrotateturnbuckletowardtherearofthemoweruntildesiredtensionis
gained. Donotovertightenbelts,tomuchtensionwillreduce belt and spindle bearing life.
(see fig. 5)
AUXILIARY BLADE BELT
1. Beforeperformingadjustmentsonbladebelt,turnthemower offanddisconnect sparkplugwire
orwires.
2.Toadjust tensionontheauxiliarybelt rotatenutonlinkagethatis attachedto deckstraplocated
onthe right side of cutter deck. (seefig. 5)