1990-1998 Arctic Cat Snowmobiles Repair Manual, Page 116Get this manual
CHAPTER THREE
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)Then 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 guage by aligning the zero with the dial (Figure 58)fTighten the set screw on the dial indicator adaptor securely5Rotate the crankshaft counterclockwise (viewed fron the right side) until the gauge needle has made approximately three revolutionsThen carefully tum the crankshaft clockwise until the gauge indicates that the piston is the correct distance before top dead center as indicated in Table 9NOTE There may be more than one mark on the flywheelTo identifY the correct mark to use when peiforming dynamic timing, apply chalk orpaint to the correct mark