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.
Measurethe plug gap with a feelergauge.Correctas necessary
by bendingthe side electrode,Figure16.The gapshouldbe set
to .02-.03inches (0.60-0.80turn).
Electrode
.02-.03in.
(0.60-0.80ram)
_J
Figure16
6. Checkthat thespark plug washeris ingoodconditionandthread
the sparkplug in by handto preventcross-threading.
7. Afterthe sparkplug is seated,tightenwith a sparkplugwrenchto
compressthe washer.
NOTE:Wheninstallinga newsparkplug,tighten 1/2-turnafter the
sparkplugseatsto compressthe washer.Whenreinstallinga used
sparkplug,tighten1/8-to 1/4-turnafter the sparkplugseatsto
compressthe washer.
Thespark plugmustbe tightenedsecurely.A loosespark plug can
becomeveryhotand can damagethe engine.
Cleaning the Engine
Ifthe engine hasbeen running,allowit to cool for at leasthalfan hour
beforecleaning.Periodicallyremovedirt build-upfromengine.Before
servicingthe engine,removethecarburetorcoverand/orblower
housing.Discardthe dirtand debrisfrom the followingareas:
Do not spraythe enginewithwater to cleanit becausethewater
couldcontaminatethe fuel.Usinga gardenhoseor pressurewashing
Iequipmentcanalso forcewaterintothe muffleropening.Waterthat
[passesthroughthe muffer can enterthecy nderand causedamage.]
* CoolingFins
* AirIntakeScreenor RecoilStarter/FlywheelGuardAreas
* SparkPlugConnection
* Levers
* LinkageArea
* Guards
* Carburetor
* EngineHead
Removingdebriswillinsureadequatecooling,correctenginespeed
and reducethe risk of fire.
Accumulationof debrisaroundthe mufflercouldcausea fire.Inspect
andclean beforeeveryuse.
LUBRICATION
Lubricatethe pivotpointson thecontrolhandleandthe extension
springat the end of the controlcablewith a light oil onceevery season
and beforethe snowthroweris put intostorageat the end of the
season.
ADJUSTMENTS
Shave Plate
Tocheckthe adjustmentof the shaveplate,placethe machineon a
level surface.Thewheels,shaveplateandaugerpaddlesshouldall
contactthe levelsurface.Notethat if the shaveplateis adjustedtoo
high, snowmay blowunderthe augerhousing.If the shaveplatewears
out excessively,or the snowthrowerdoesnot self-propel,the shave
plate maybe too low and needsto beadjusted.
NOTE: On newsnow throwersor machineswith a newshaveplate
installed,the augerpaddlesmaybeslightlyoff the ground.
Toadjust the shaveplateproceedas follows:
1. Runthe snowthroweruntilthe fueltankis empty.
2. Pullthe startercorduntil resistanceis felt.Then tip the snow
throwerbackuntilit restson the handles.To ensurethat the snow
throwerdoesnot tip forward,it maybe necessaryto securethe
handleto the groundwitha blockorother object.
3. Loosenthefourflangelocknutsand carriageboltswhichsecure
the shaveplatetothe housing.SeeFigure17.Movethe shaveplate
to the desiredpositionand retightenthe nutsandboltssecurely.
SideView
y
/
i\
Ji
ReversibleShavePlate
J
Figure17
4. Tip the snowthrowerback to theoperatingpositionand pull the
starterhandlea fewtimesto see if it is difficultto pull.
15
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