2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 112Get this manual

2003 Polaris MSX 140 Personal Watercraft Service Manual, Page 112

Fuel Injection System FFIt DiagnosticsCylinder Drop TestsContinued When the engine is running above 2000 RPM, the Cylinder
1) CYLINDER DROP TEST #1 CYL 2) CYLINDER DROP TEST #2 CYL 3) CYLINDER DROP TEST #3 CYL X) EXIT CYLINDER DROP TEST RPM: 2250
SELECT THRU OR X: To Diagnose Misfire Run the engine under the conditions that cause the misfire to occur and drop each cylinderWhen
you drop the cylinder that is misfiring, the misfire will stopYou can focus on that cylinder To Diagnose Low Performance
or Rough Running: Run the engine under load (in the water at 2000-2500 RPM) and drop each cylinderWatch the RPM on the screen
or on the tachometerThe RPM drop will be substantially less on cylinder that is weakIf you drop cylinder and the engine RPM
does not change at all, that cylinder has problemWhen you are finished with the Cylinder Drop Testing Menu, type or press