Piston Ring Installed Gap (Eh42Pl/Eh50Pl); Crankcase Disassembly - Polaris Magnum 2x4 Service Manual

Engine Disassembly, Cont.
Piston Ring Installed Gap
1. Place each piston ring inside cylinder using piston
to push ring squarely into place.
2. Measure installed gap with a feeler gauge at both
the top and bottom of the cylinder.
NOTE:
A
difference in end gap indicates cylindertaper. The
cylinder should be measured for excessive taper
and out of round.
3. If the bottom installed gap measurement exceeds
the service limit, replace the rings.
NOTE:
Always check piston ring installed gap after re-
boring a cylinder or when installing new rings. A re-
bored cylinder should always be scrubbed thoroughly
with hot soapy water, rinsed, and dried completely.
Wipe cylinder bore with an oil rag immediately to re-
move residue and prevent rust.
Crankcase Disassembly
NOTE:
Engine must be removed from frame to disas-
semble crankcase. Refer to engine removal, pages
3.38 - 3.42. Remove the following components: cylin-
der head, cylinder, water pump impeller.
NOTE:
The recoil starter, starter motor, starter drive,
flywheel, stator, cam chain and sprockets can be serv-
iced with the engine in the frame.
Polaris Industries Inc. 3.65
ENGINE
EH42PL/EH50PL Engine
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