2001 Polaris SLX, PRO 1200, Virage TX, Genesis, Virage TXi, Genesis i Personal Watercraft Service Manual, Page 114Get this manual
EngineCooling Engine InspectionAll 1200 ModelsContinued
8With the pointer aligned, make sure the degree wheel and pointer are secured and will not move out of positionRe-check accuracy of this location by repeating steps and 5The pointer should align with the 120 mark when measurement is taken between scribes and divided in halfIMPORTANT: Do not move the degree wheel or pointer after the initial setting on the mag end cylindersimply read the wheel and dial indicator,-
Install the bumper tool in cylinder #2 (center)Repeat steps through for cylinder2It should be 1202) from cylinder #1Proceed to PTO cylinder (#3)Cylinder #3 should also be 1200( 2) from cylinder #1Symptoms of an out of index crankshaft can include: Difficulty calibrating carburetor (repetitive plug fouling on one cylinder with no other cause); Unexplained piston failure on one cylinder (Lesevere detonation, broken ring lands, piston holing); Excessive vibration of engine, backfiring, etc Rough idle, poor top speedDegree Wheel