1985-1995 Polaris ATV and Light Utility Hauler Service Manual, Page 239Get this manual
ENGINES
2 Stroke Maintenance
Air Cleaner Service 1987 to Current (Except Magnum and Scrambler) Cleaning the Filter
The filter should be cleaned after every 25 hours of operationNew filters should be installed after every 50 hours (more frequently in severely dirty conditions)The importance of clean, serviceable air filter cannot be over emphasizedIf the filter is not serviced regularly, poor performance, shortened engine life, and carburetor component wear may resultWhenever the air filter is cleaned be sure to observe the following practices: 12Never immerse the filter in waterDirt can be transferred to the clean air side of the filterIf compressed air is used, never exceed pressure of 40 PSIAlways use dispersion type nozzle to prevent filter damageClean from the outside to the insideAlways inspect the air box and cover for cracks or distortion from heatDust Contamination