2000 Polaris Universal Snowmobile Owners Manual - Page 91

2000 Polaris Universal Snowmobile Manual

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MAINTENANCE Engine and Carburetor Proper off season preparation of the engine and fuel system is vital to the prevention of rust and corrosion formation on precision engine parts during storage. Without proper storage, jet restriction can cause lean conditions and very poor slow speed driving quality. D When preparing your snowmobile for off-season storage we recommend that you add fuel conditioner/stabilizer or Premium Carbon Clean ( PN 2871326) to the fuel tank. Follow the instructions on the can. Run the engine for five minutes to get additives through the entire fuel system. Then top off the tank with fresh fuel. D Fog the engine with Polaris Fogging Oil (PN 2870791). This is available from your Polaris dealer. Follow the recommended procedures indicated on the can. D If stabilizer is not used the carburetors should be drained by removing the the drain plugs or nipples. Refer to page 59 for procedure. Catch fuel in a container or shop cloth. Reinstall and tighten drain plugs securely. Observe all fire safety rules when draining carburetors. See gasoline warning on page 34. Engine and Carburetor 1. 2. 3. 4. 5. 6. 7. Using a fuel stabilizer and topping off the fuel tank eliminates the need to drain the fuel system. If you prefer to drain the fuel tank, use the following procedure: Transfer unused fuel from the fuel tank to an approved fuel container using a siphon pump. Do not re-use fuel after storage. Securely support the front of the snowmobile with a jack stand so the engine is tilted rearward. Remove the spark plug(s). Rotate the engine slowly, watching the piston until it is at BDC - lowest position in the cylinder. On twin cylinder models the opposite piston will be up. Pour approximately two ounces of Polaris injector oil into the spark plug hole. Wait one to two minutes and perform steps 4-6. on remaining cylinders. Replace the spark plugs and set machine on floor NOTE: This procedure is performed best when the front of the machine is elevated and the engine is tilted rearward. Track and Suspension Under normal conditions moderate track tension should be maintained during summer storage. The rear of the machine should be supported off the ground to allow free hanging of the track. HINT: For easier starting after extended storage, add Polaris Premium 2 cycle lubricant to the fuel in the tank at a 40:1 ratio and run the engine for three to five minutes before storage. This will lubricate the fuel pump diaphragm to keep it flexible and help prevent loss of prime. 86

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86
MAINTENANCE
Engine and Carburetor
Properoffseasonpreparationoftheengineandfuelsystemisvitaltothepreven-
tionofrustandcorrosionformationonprecisionenginepartsduringstorage.
Withoutproperstorage,jetrestriction can causelean conditionsand verypoor
slowspeeddrivingquality.
D
Whenpreparingyoursnowmobileforoff-seasonstoragewe recommendthat
youaddfuelconditioner/stabilizerorPremiumCarbonClean(PN2871326)to
thefueltank.Followtheinstructionsonthecan.Runtheengineforfiveminutes
togetadditivesthroughtheentirefuelsystem. Thentopoffthetankwithfresh
fuel.
D
FogtheenginewithPolarisFoggingOil(PN2870791). Thisisavailablefrom
yourPolarisdealer. Followtherecommendedproceduresindicatedonthecan.
D
Ifstabilizerisnotusedthecarburetorsshouldbedrainedbyremovingthethe
drainplugsornipples.Referto page59forprocedure.Catchfuelinacontainer
orshopcloth. Reinstallandtightendrainplugssecurely. Observeallfiresafety
ruleswhendrainingcarburetors. Seegasolinewarningonpage34.
Engine and Carburetor
Usingafuelstabilizerandtoppingoffthefueltankeliminatestheneedtodrainthe
fuelsystem. Ifyouprefertodrainthefueltank,usethefollowingprocedure:
1. Transferunusedfuelfromthefueltanktoanapprovedfuelcontainerusinga
siphonpump. Donotre-usefuelafterstorage.
2. Securelysupportthefrontofthesnowmobilewithajackstandsotheengineis
tiltedrearward.
3. Removethesparkplug(s).
4. Rotatetheengineslowly,watchingthepistonuntilitisatBDC-lowestposition
inthecylinder. Ontwincylindermodelstheoppositepistonwillbeup.
5. PourapproximatelytwoouncesofPolarisinjectoroilintothesparkplughole.
6. Waitonetotwominutesandperformsteps4-6.onremainingcylinders.
7. Replacethesparkplugsandsetmachineonfloor
NOTE:
Thisprocedureisperformedbestwhenthefrontofthemachineiselevated
andtheengineistiltedrearward.
Track and Suspension
Under normal conditions moderate
track tension should be maintained
during summer storage. The rear of
the machine should be supported off
thegroundtoallowfreehangingofthe
track.
HINT:
Foreasierstartingafterextendedstorage,addPolarisPremium2cyclelu-
bricanttothefuelinthetankata40:1ratioandruntheengineforthreetofivemin-
utesbeforestorage. Thiswilllubricatethefuelpumpdiaphragmtokeepitflexible
andhelppreventlossofprime.