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8.19

TRANSMISSION

9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual

Transmission Assembly

1. Assemble the reverse shaft assembly and input shaft

assembly if previously disassembled (see

illustrations).

2. Inspect the shift drum for any damage or wear. Inspect

e splines of the shift drum. Replace the O-ring on the

end of the shift drum and lubricate it before assembly.

3. Stretch the silent chain on a flat surface and measure

e length of 8 pitches in a minimum of three places

on the chain. Replace the chain if the measurement

is longer than the service limit.

4. The shift drum, reverse shaft, input

shaft, shift fork rail

and output gear assembly must be installed at the

same time to properly align all components.

= In. / mm.

Silent Chain Service Limit (8 pitch):

3.090” (7.849 cm)

Reverse Shaft

Input Shaft

Shift Fork Rail

Polaris A12MH46AX User Manual

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