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Section 5: Maintenance
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efore inspecting,cleaningor servicing the machine,shut offengine,wait for movingpartsto stop,dis- I
connect s parkplugwire and movewire awayfrom sparkplug.
Failureto followtheseinstructions c anresultin seriouspersonalnjuryor property damage.
Figure5-17: Dislodginghandlebarstruts.
2. Foldthe top section of the assembly
backward (2, Figure5-16). Guidethe
cables carefullywhile folding. Be sure
not to bend,pinch, or stretch the cables.
IMPORTANT:To avoid damageto cables,
alwaysfold the top sectionof the
handlebarassemblybackwardand the
bottom sectionforward.
3. Still supporting the handlebar
assemblywith one hand,loosenthe two
lower handlebaradjustment knobs
(3, Figure5-16) just enoughto dislodge
both handlebarstruts (L, Figure5-17)
from the slots (K) in the wheel bracket
assembly.
NOTE:Thehandlebarheightcould inad-
vertently changeif the lower adjustment
knobs are loosenedexcessivelyduring
this step.
4. Carefullyfold the bottom sectionof
the handlebarassemblyforward overthe
engine (4, Figure5-16). Guidethe cables
carefully whilefolding. Be sure not to
bend,pinch, or stretch the cables;also,
keepcablesaway from muffler -- the
outer cablecovering canbe burnedifthe
engineis still hot.
5. To unfold handlebarassembly,
perform folding steps in reverseorder.
PINIONGEARSERVICE
The mower drive wheels(rear wheels)
eachcontain a pinion gear. This gear
transfers drive powerto the wheelswhich
propelsthe mower forward. It is very
importantto keepthese internal parts
clean. Thefollowing procedureexplains
how to disassemble,cleanand reassem-
ble the mower drive wheels. Conductthis
maintenanceon the pinion gearsafter
every50 operatinghours.
Figure5-18: Drive wheelassembly.
Tools and Materials
• 9/16" Socketand Ratchet
• Small Snap-RingPliers
• CleaningRags
Procedure
NOTE:This procedureis done only on
the drivewheels (rear wheels).
1. Placea sturdy, stable block underthe
mowerto elevate a rear wheeloff the
ground.
2. Usea 9/16"wrench to removewheel
assembly(A, 8, C, D, E, Figure5-18).
3. Removesnap-ring (J, Figure5-18)
from axle.
4. Removeshim(s) (I, Figure5-18). The
numberof shims vary from mowerto
mower. Putthem next to the snap-ring.
5. Pull off pinion gear (H, Figure5-18).
6. Removedrive pin (G,Figure5-18).
7. Removeplasticwasher/seal
(F, Figure5-18).
8. Thoroughly cleanoff debrisfrom the
drive pin, axle, hole in axle(for drive pin)
andthe washer/seal.
9. Reinstallwasher/seal(F, Figure5-18).
Besure to install flat side of washer
againstbearing (mower deck).
10. Insertthe drive pin (G,Figures5-18)
intothe hole in the axle.
NOTE:Thepin should slidefreely within
the hole.
11. Thoroughlycleanpinion gear,
including surfaceareaand cavity.
12. Slide the pinion gear(H, Figure5-18)
onto the axlewith the cavity toward the
mower. Pressthe gear firmly againstthe
washer/seal(F, Figure5-18). Be certain
that the gear Lsflush againstthe surface
of the washer/seal a nd that the
washer/sealisflush againstthe wheel
mounting bracket.
13. Slide the shims (I, Figure5-18) onto
the axleand againstthe pinion gear. Be
sureto install the samenumber of shims
as wereremovedfrom the unit.
14. Installthe snap-ringonto the axle
(J, Figures5-18) and into the groovein
the axle. Pull the pinion gear outwardto
be sure that the snap-ringseatsproperly.
NOTE: If you can't getthe snap-ringinto
the slot in the axle, press the pinion gear
morefirmly againstthe washer/seal. Do
not leaveoff shims.
15. Insert wheelscrew (A,Figure
5-18) through wheel(B), flat washer (C),
centerhole in wheelshield (D), and
spacer (E). The wheelshieldhas a double
edge on the rim. Position this side
toward the wheel.
16. Align piniongearwith the hole in the
wheelshield. At the same time, align the
wheelscrew with the weldednut on the
wheel bracketand tighten securely.
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