1999 Polaris SLH, SLTH, SLX, SLTX, PRO785 Factory Service Manual, Page 226Get this manual
ENGINECOOLING Crankshaft Indexing Crankshaft Indexing
Polaris Watercraft crankshafts are pressed together or "indexed" so the connecting rod journal center lines are 1200 apart from each other (180 on twin cylinders)It is sometimes necessary to check multi-cylinder crankshafts to verify that one cylinder has not been forced out of position relative to the other cylinder or cylindersCauses for out-of-index crankshafts include but are not not limited to: Hydrolock from water or fuel; See Troubleshooting, Chapter Impact to impeller from foreign object or accident; Abrupt piston or other mechanical failure; Following is method of checking: .100 ATDC
Dial Indicator