2007 Yamaha Apex Factory Service Manual, Page 36Get this manual

2007 Yamaha Apex Factory Service Manual, Page 36

COMPRESSION PRESSURE MEASUREMENT ENGINE OIL LEVEL INSPECTION INSP ADJ Measurement steps: Turn the main switch to "ON"S With
1Inspect: Engine oil level CAUTION: Do not run the engine with too much or not enough oil in the oil tankOil could flow into
the intake silencer and the engine could be damagedInspection steps: Place the snowmobile on level surface and apply the
parking brakeS Start the engine, warm it up for 10 15 minutes, and then turn offS Disconnect the oil level gauge coupler
CAUTION: Disconnect the oil level gauge coupler before removing the oil level gaugeOtherwise the lead can twist and become