Cylinder / Piston Removal And Inspection - Polaris A12MH46AX Service Manual

ENGINE
4. Re-check the valve clearance.
5. Repeat adjustment procedure if necessary until
clearance is correct with locknut secured.

Cylinder / Piston Removal and Inspection

NOTE: Follow engine disassembly procedures to
remove valve cover, camshaft and rocker arms, and
cylinder head.
1. Remove cam chain guide at front of cylinder.
2. Loosen all four oil pipe banjo bolts and then remove
the bolts and eight sealing washers. Remove the
pipes.
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9923412 - 2012 Sportsman 400/500 and EFI Tractor Service Manual
© Copyright 2011 Polaris Sales Inc.
3. Loosen hose clamps and remove coolant inlet hose.
4. Remove the two 6 mm cylinder base bolts.
5. Loosen each of the four large cylinder base bolts 1/4
turn at a time in a criss-cross pattern until loose and
remove bolts.
NOTE: The bolts are inside the water jacket.
6. Tap cylinder lightly with a plastic hammer in the
reinforced areas only until loose.
7. Rock cylinder forward and backward and lift it from the
crankcase, supporting piston and connecting rod.
Support piston with Piston Support Block (PN
2870390).
8. Remove dowel pins from crankcase.