1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 121Get this manual
LUBRICATION, MAINTENANCE AND TUNE-UP
3Remove the cover from the cooling fan so that the flywheel timing mark and the crankcase mark can be seen (Figure 70)4Install and position dial indicator as follows: aScrew the extension onto dial indicator and insert the dial indicator into the adapter (Figure 57)bScrew the dial indicator adaptor into the cylinder head on the MAG sideDo not lock the dial indicator in the adapter at this timecRotate the flywheel by turning the primary sheave until the dial indicator rises all the way up in its holder (piston is approaching top dead center)Slide the indicator far enough into the holder to obtain readingdLightly tighten the set screw on the dial indicator adaptor to secure the dial gaugeeRotate the flywheel until the dial on the gauge stops and reverses directionThis is top dead centerZero the dial gauge by aligning the zero with the dial (Figure 58)fTighten the set screw on the dial indicator adaptor securely5Rotate the crankshaft clockwise (viewed from the right-hand side) until the gauge needle has made approximately three revolutionsCare-