Fuel System; Vent Lines; Compression Test - Polaris 2007 SPORTSMAN X2 800 Service Manual

MAINTENANCE

Fuel System

WARNING
Gasoline is extremely flammable and explosive
*
under certain conditions.
* EFI components are under high pressure. Verify
system pressure has
disassembly.
* Never drain the fuel system when the engine is
hot. Severe burns may result
* Do not overfill the tank. The tank is at full capacity
when the fuel reaches the bottom of the filler neck.
Leave room for expansion of fuel.
* Never start the engine or let it run in an enclosed
area. Gasoline powered engine exhaust fumes are
poisonous and can cause loss of consciousness
and death in a short time.
* Do not smoke or allow open flames or sparks in
or near the area where refueling is performed or
where gasoline is stored.
* If you get gasoline in your eyes or if you should
swallow gasoline,
immediately.
* If you spill gasoline on your skin or clothing,
immediately wash with soap and water and change
clothing.
* Always stop the engine and refuel outdoors or in
a well ventilated area.Keep away from open flames
and electrical components when removing fuel
filter.
The fuel filter (1) should be replaced in accordance with the
Periodic Maintenance Chart. To replace the filter:
EFI Example
1. Disconnect negative battery cable.
2. Relieve the pressure on the fuel rail. (See Ch. 4)
3. Remove line locks at both ends of the filter.
2.16
been relieved before
seek medical attention
(1)
4. Remove fuel lines from filter, use shop towels to catch any
leaking fuel.
5. Install new filter in line with arrow pointed in direction of
fuel flow.
6. Install line locks on fuel lines and verify locks are seated.
7. Start engine and inspect for leaks.

Vent Lines

Check fuel tank, oil tank, battery and transmission vent lines for
signs of wear, deterioration, damage or leakage. Replace Be
sure vent lines are routed properly and secured with cable ties.
CAUTION
Verify vent lines are not kinked or damaged

Compression Test

NOTE: This engine does NOT have decompression
components. Compression readings will vary in
proportion to cranking speed during the test.
Average compression (measured) is about 150-200
psi during a compression test.
A smooth idle generally indicates good compression. Low
engine compression is rarely a factor in running condition
problems above idle speed. Abnormally high compression can
be caused by carbon deposits in the combustion chamber or
worn, damaged exhaust cam lobes. Inspect camshaft and
combustion chamber if compression is abnormally high.
A cylinder leakdown test is the best indication of engine
condition. Follow manufacturer's instructions to perform a
cylinder leakage test. (Never use high pressure leakage testers,
as crankshaft seals may dislodge and leak).
Cylinder Compression
Standard: 150-200 PSI
Cylinder Leakdown
Service Limit 15%
(Inspect for cause if test exceeds 15%)