Polaris Ranger 500 2x4 2007, Service Manual

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3.30
ENGINE
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.
Piston Removal
1. Remove circlip. Note piston directional arrow pointing
toward the right (Mag) side of engine.
2. Remove piston circlip and push piston pin out of piston. If
necessary, heat the crown of the piston slightly with a
propane torch. CAUTION: Do not apply heat to the piston
rings. The ring may lose radial tension.
3. Remove top compression ring.
*Using a piston ring pliers : Carefully expand ring and lift it
off the piston. CAUTION: Do not expand the ring more than
the amount necessary to remove it from the piston, or the ring
may break.
*By hand: Placing both thumbs as shown, spread the ring open
and push up on the opposite side. Do not scratch the ring lands.
4. Repeat procedure for second ring.
The oil control ring is a three piece design consisting of a
top and bottom steel rail and a center expander section. The
top rail has a locating tab on the end which fits into a notch
(A) in the upper oil ring land of the piston.
5. Remove the top rail first followed by the bottom rail.
6. Remove the expander.
A