2008 Arctic Cat 366 ATV Service Manual, Page 14Get this manual

2008 Arctic Cat 366 ATV Service Manual, Page 14

Testing Engine Compression To test engine compression, use the following procedure1Remove the high tension lead from the
loosen the jam nut; then rotate the tappet adjuster screw clockwise until friction is felt5Align the valve adjuster handle
with one of the marks on the valve adjuster dial6While holding the valve adjuster handle in place, rotate the valve adjuster
dial counterclockwise until proper valvetappet clearance is attainedNOTE: Refer to the appropriate specifications in Feeler
Gauge Procedure sub-section for the proper valvetappet clearanceNOTE: Rotating the valve adjuster dial counterclockwise will
open the valvetappet clearance by 0.05 mm (0.002 in per mark 5While holding the throttle lever in the full-open position,
crank the engine over with the electric starter until the gauge shows peak reading of 95-115 psi (five to 10 compression
strokes)6If compression is abnormally low, inspect the following itemsAVerify starter cranks engine over at normal speed
(approximately 400 RPM)BGauge functioning properlyCThrottle lever in the full-open positionDValvetappet clearance correctEValve