Polaris Virage TX 2000 Service Manual page 29

MAINTENANCE/TUNE UP
Engine
Engine Mounts
Check tightness of all engine mounts including bolts that secure mounting plate to engine. Inspect rubber mounts
for cracks. Tighten or replace if necessary. Always replace engine mounts when engine is removed for service.
Compression Test
A compression test is a good indicator of engine condition. For accurate readings, use a high quality gauge and
make sure the battery is in good condition and fully charged.
Compression Gauge PN 2870852
A WARNING
The spark plug high tension leads must be securely grounded to the engine block to prevent a spark which may
ignite fuel or fumes, causing a fire or explosion.
1. Remove all spark plug high tension leads and
connect securely to ground on engine block.
2. Remove all spark plugs and install compression
gauge in cylinder to be tested.
3. Using the starter motor, turn engine over with
throttle wide open until a maximum reading is
obtained (approximately 3-5 seconds). Record
reading.
4. Repeat for the other cylinders and compare to each
other cylinder. All readings must be within 5% of
each other.
Compression (Open Throttle at Sea Level)
Standard -120-*50 $&/$ty in
Service JLIijti^; '* t^a^than 5%
variance between cylinders.
Spark Plugs
1. Disconnect high tension leads and remove spark
plugs. See page 7.1 for spark plug applications.
2. Inspect electrodes for wear, carbon buildup, or
fouling (wet oily residue). Replace plugs if edges of
electrodes are rounded or eroded.
Severe engine damage may occur if the incorrect spark
plug is used. Refer to Electrical section for spark plug
type.
3. Clean with electrical contact cleaner or a glass bead
spark plug cleaner only. A wire brush or coated
abrasive should not be used.
Important! Use Only Resistor Spark Plugs
.024 - .028" (.6 - .7 mm, Non-FFI™.)
FFI™ .32" (.8mm)
3/00
2.12
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