Maintenance – Polaris 2000 Universal Snowmobile User Manual

Page 91

MAINTENANCE

Engine and Carburetor

Proper off season preparation of the engine and fuel system is vital to the preven-

tion 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.

Fog the engine with Polaris Fogging Oil (PN 2870791). This is available from

your Polaris dealer. Follow the recommended procedures indicated on the can.

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

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:
1. Transfer unused fuel from the fuel tank to an approved fuel container using a

siphon pump. Do not re-use fuel after storage.

2. Securely support the front of the snowmobile with a jack stand so the engine is

tilted rearward.

3. Remove the spark plug(s).
4. 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.

5. Pour approximately two ounces of Polaris injector oil into the spark plug hole.
6. Wait one to two minutes and perform steps 4-6. on remaining cylinders.
7. 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 lu-

bricant to the fuel in the tank at a 40:1 ratio and run the engine for three to five min-

utes before storage. This will lubricate the fuel pump diaphragm to keep it flexible

and help prevent loss of prime.