Cleaning The Engine; Lubrication; Adjustments; Shave Plate - Craftsman 247.887802 Operator's Manual

5.
Measure the pluggapwith afeelergauge. C orrect asnecessary b ybending
the sideelectrode, seeFigure 16.Thegapshouldbesetto .02-.03 inches
(0.60-0.80 mm).
Electrode
.02-.03in.
(0.60-0.80ram)
Figure 16
6. Check thatthe sparkplug washer isin goodconditionandthreadthe spark
plugin byhandto preventcross-threading.
7. Afterthe sparkplug isseated, t ightenwith asparkplugwrenchto compress
the washer.
NOTE: Wheninstallinganewsparkplug,tighten 1/2-turnafterthe spark
plugseats to compress t he washer. W henreinstallingausedsparkplug,
tighten 1/8-to 1/4-turnafter the sparkplug seats to compress t he washer.
Thesparkplug mustbe tightened securely.Aloosesparkplug can become
very hot and candamagethe engine.
Removing debris willinsure a dequate cooling, correct engine speed a ndreduce t he
riskoffire.
Accumulationof debris aroundthe muffler couldcauseafire. Inspectand
cleanbefore everyuse.
Lubrication
Lubricate the pivotpointsonthe controlhandleandthe extension springat the end
of the control c ablewith a lightoil onceeveryseason andbefore the snowthrower
is put into storage atthe endof the season.
Adjustments
ShavePlate
Tocheck the adjustment o f the shave plate,placethe machine on alevelsurface.
Thewheels,shave plateandaugerpaddles shouldall contactthe levelsurface.
Notethatif the shave plateisadjustedtoo high,snowmayblowunderthe auger
housing.If theshaveplatewearsout excessively, or the snowthrowerdoesnot
self-propel, t he shaveplatemaybetoo low andneeds to beadjusted.
NOTE: Onnewsnowthrowersor machines w ith anewshave plateinstalled,
the augerpaddles maybeslightlyoffthe ground.
Toadjustthe shaveplateproceed asfollows:
1. Run the snowthroweruntilthe fuel tankisempty.
2. Pullthestartercorduntil resistance isfelt. Thentip the snowthrowerback
until it restsonthe handles. T oensure thatthe snowthrowerdoesnot tip
forward,it maybenecessary t o secure the handleto the groundwith ablock
or otherobject.
3. Loosen t he fourflangelocknutsandcarriage boltswhichsecure the shave
plateto thehousing. S ee Figure 17. M ovetheshave plateto the desired position
andretightenthe nutsandboltssecurely.
Cleaning the Engine
If the enginehasbeenrunning,allowitto coolfor at leasthalfan hourbefore
cleaning. P eriodically r emove dirt build-upfrom engine.Before servicingthe
engine,remove the carburetorcover a nd/orblowerhousing. D iscard the dirt and
debris from the followingareas:
Donot spraythe enginewith water to clean it becausethe water could
contaminatethe fuel. Using a garden hose or pressurewashingequipment
can alsoforce water intothe muffler opening. Waterthat passes through
the muffler can enterthe cylinder andcausedamage.
Cooling Fins
AirIntakeScreen or Recoil Starter/Flywheel Guard Areas
Spark PlugConnection
Levers
Linkage Area
Guards
Carburetor
/
;J
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Reversible ShavePlate
Screw
Figure 17
Tipthe snowthrowerbacktothe operatingpositionandpull thestarter
handle afew timestoseeif it isdifficult to pull.
Engine Head 1 5