2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 25Get this manual

2004 Poalaris MSX110, MSX150 PWC Original Service Manual, Page 25

MAINTENANCE E.S.PFunction Testing 1Watercraft must be on engine stand or on trailer to perform test2Insert lanyard into stop
coils, spark plugs, fuel injector wiring harness, and cam phase sensor harness connector from the valve cover2Remove the
valve cover from the engine3Insert the lanyard into the stop switchRapidly tap the start button to rotate the engine4Rotate
the engine until the MAG cylinder is at TDC -COMPRESSION strokeNOTE: TDCCOMPRESSION stroke is found when the both cam lobes
are pointed down, away from the rocker arms, and the piston is at TDC5Verify each rocker arm is loose and not engaged by
the camshaft6Using feeler gauge, measure the clearance at each of the valves between the installed shim and rocker armRecord
each measurement(Photo B) 7If the measured clearance is within specification, no adjustment is required8If the measured clearance
is out of specification, the valve shim must be replaced with one that will satisfy the clearance specificationsPhoto A VALVE