2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 50Get this manual

2004 Polaris Freedom, Virage, Genesis and MSX-140 Service Manual., Page 50

MAINTENANCE Rich Fuel Mixture Symptoms: Fouled spark plugs; black sooty exhaust; rough idle, idle unstable; poor fuel economy;
Lean fuel mixture Poor quality, low octane gasoline Incorrect ignition timing Spark plug heat range too high Symptoms: Engine
power lossS Weak spark Incorrect fuel or fuel mixture Water in fuel system or oil tank Fuel filter restricted Jet intake
clogged Cooling system clogged Symptoms: Engine noiseS Detonation (see causes for holed or eroded pistons, this section)
Excessive piston clearance Exhaust leak, loose exhaust pipe or muffler (water box) Engine mounts or mount plate loose or
rubber mounts broken Drive coupler splines dry Driveshaft runout excessive Driveshaft end play incorrect; rubber dampers
worn or missing Broken ring or ring land Oil pump bushing end play excessive Ignition timing incorrect Piston pin damaged
or bent Connecting rod bearing failure (small end or big end)Crankshaft main bearing failure or wear Flywheel loose 2004