Maintenance Recommendatins; Replacing The Shave Plate And Skid Shoes; Servicing Augers; Engine Maintenance - MTD 31A-3BAD729 Operator's Manual

WARNING
Before lubricating,
repairing;or;
inspecting, d isengage
a, controls and s top
enginei Wait until all
moving partshave
come to a complete
stop, Disconnect the
grou ndit againstthe
to prevent
unintended starting:
If auger continuesto
rotate with the Control
disengagedl shut off
engineand rezadjust.
l
.
General Recommendations
Shear Pin "_
1. Alwaysobservesafetyruleswhen performing any Cotter Pin
maintenance.
2. Thewarrantyon this snowthrowerdoesnot cover Skid Shoe
itemsthat havebeen subjectedto operatorabuseor
negligence.Toreceivefull valuefrom the war-
ranty,operatormustmaintainthe snowthroweras
instructedin this manual.
Periodicallycheckall fastenersand hardwareto
makesurethese are tight.
WARNING: Before servicing, repairing, ShavePlate
_ lubricating or inspecting, d isengage all He×Nut Carriage
controlsand stop engine.Wait until all
Bolt Hex Nut
J
moving parts have come to a complete j/
stop. Disconnect spark plug wire and Figure 9
ground it against the engineto prevent
unintendedstarting. Alwayswear safety
glasses during operation or while per-
forming any adjustmentsor repairs.
Replacing the Shave Plate
and Skid Shoes
Theshaveplateand skid shoeson the bottomof the
snowthrowerare subjectto wear.Theseshouldbe
checkedperiodicallyand replacedwhennecessary
Toreplace, r emove two carriage boltsandhexnuts
securing eachskidshoetotheauger housing.SeeFig.9
2. Reassemble n ewskidshoeswithhardware j ustremoved.
Makesuretheskidshoes areadjusted tobe level.
3. To remove shave plate: Removeboth skid shoes
and hardwareincludingcarriagebolts,and hex
nuts whichattachshaveplateto the snowthrower
housing.Forlocationof shaveplate,see Figure9.
4. Reassemble new shaveplate,makingsureheads
of the carriagebolts are to the insideof the housing.
Reinstallskid shoes.Tighten securely.
Servicing Augers
Theaugersare securedto the spiralshaftwith four
shearpinsand cotterpins. If you hita foreignobjector
icejam, the snowthroweris designedso that the pins
may shear.Referto Figure9.
If the augersdo notturn, checkif thepins havesheared.
Replace,if needed,with propershearpins.Referto
item 42 on page 17for part number.
IMPORTANT:NEVERreplacetheauger shearpinswith
standardpins or fasteners.Anydamageto theauger
gearboxor other components, a s a result of doingso,
will NOTbe coveredby yoursnowthrower'swarranty.
Lubrication
Fora view of the lubricationpointson the snowthrower,
see Figure10.
1. Lubricatepivot pointson theauger controland drive
controlwith a lightengineoil oncea season.
Figure 10
J
2. Lubricatethe auger idlerbracketwith a lightengineoil
oncea season.
Engine
Listedbeloware generalrecommendations about
maintaining your snowthrowerengine.Forfurther details,
referto the accompanying engine manual.
1. Beforeoperatingsnow thrower,checkthe oil level.
2. Changeengineoil afterfirst two hoursof operation
and every25 hoursthereafter.
3. Cleansparkplug and resettheelectrodegap to
0.030"at leastonce a seasonor every 100 hoursof
operation;replaceevery200 hoursof operation.
Check V-Belts
Followinstructionsbelowto checkconditionof drivebelts
every50 hoursof operation.
1. Removetheplasticbeltcoveron the frontof theengine
by removing the self-tapping screwand pressing the
plastictabsto releasethebeltcover.See Figure11
2. Visuallyinspectfor frayed,cracked,or excessively
wornout belts.Replace,if necessary,following
instructionson page 13.
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