Replacing Belts; Auger Belt; Drive Belt - MTD 31A-3BAD729 Operator's Manual

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f
Drive
Belt
\
Figure 11
Belt
Auger
i Pulley
Figure12
FlangeLock Nut
Idler
Bracket
Drive Pulley
Drive Belt
Figure13
Replacing Belts
NOTE: Thereare two beltson this snowthrower:an
augerbelt and drivebelt. It is recommended that both
belts be replacedat the sametime.
1. Remove thesparkplugwirefromspark plugandground
it againstthe engineto preventaccidentalstarting.
2. Draingasolinefrom the gastank,or placea piece
of plasticsheetunderneaththe gas capto prevent
gasolineleakage.
WARNING:Performbelt maintenanceoutdoors as
somegasmay possibly leakfrom the carburetor e ven
though youplaceda sheetof plasticunderneaththe
gas capto prevent t he gascapfrom leaking.
3. Removethe self-tappingscrewshown in Figure
11,and pressthe plastictabs to releasethe belt
cover.Pull the beltcover up and out fromaround the
engineand chute assembly.Set it asideand save.
Auger Belt
1. Slipthefrontaugerbeltoff of theenginepulleypushing
itforward and rolling inoff ofthe pulley.SeeFigure12.
2. Squeezetheauger controlhandleto releasethe
augerbrake,which isthe tab that holdsthe beltonto
the augerpulley.Removethe belt.
3. Replacewith newbeltafter replacingthe drivebelt.
Drive Belt
NOTE:Replacethe drivebelt beforereassembling the
newauger belt.
1. Tipthe snowthrowerup and forwardso that it rests
on the augerhousing.
IMPORTANT:Remember, g as could leakfrom the
carburatorat this point, thegas cap shouldhavebeen
coveredwith plasticas previouslyinstructed.
2. Removethe springthat connectsthe transmissionto
a bolton the engineframe.See Figure13.
NOTE: It may be easierto first removethe flangelock
nut, then useneedle-nosedpliersto firmlygrip spring
and removefrom bolt.
Pivotthetransmission forwardto releasepressure on
thedrivebelt. Remove beltfromtransmission pulley.
.
4. Removethe drive beltfrom aroundthe enginepulley,
and awayfrom the unit.
5. Placethe newdrivebelt intothe grooveon the
enginepulley.See Figure12.
6. Tilt the transmissionforwardand positionthe drive
beltonto the transmission pulley.
7. Reconnect thespring tothebolton theengine frameand
secure thetransmission. R einstall theflangelocknut.
8. Installnewauger belt.
9. Reassemble the belt coveron the snowthrower.
WARNING
Before servicing,
repairing, or inspect-
ing, disengage all
controlsand stop
engine. Wait until all
moving partshave
cometo a complete
stop. Disconnectspark
plugwire and ground
it against the engine
to preventunintended
starting.Always wear
safety glasses during
operation or while
performingany adjust-
mentsor repairs.
13