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3.62

9924874 R02 - 2014 RZR XP / XP 4 1000 Service Manual

3. Inspect crankcase bearing bores. Replace the

crankcase assembly if a bearing bore is galled or if

bearing inserts have rotated in the case.

4. Be sure alignment pins are in place where used.

5. Refer to “Oil Flow Chart” at the beginning of this

chapter and trace the oil paths through the

crankcase and cylinder.

6. Flush all oil passages with solvent and then warm

soapy water. Rinse with clear, warm water and dry

with compressed air.

7. Be sure passages are clean and dry before

assembling the upper crankcase.

Piston Ring Installation

NOTE: Apply clean engine oil to all ring surfaces

and ring lands upon installation. Always check

piston ring installed gap before rings are installed on

piston (see “Piston Ring Installed Gap”). Clean

accumulated carbon from piston ring grooves and

oil ring lube holes if piston has been in service.

1. Top Ring 5. Upper Rail

2. Marking Up

6. Spring Expander

3. Marking Up 7. Lower Rail

4. Second Ring

1. Place oil control ring expander in oil ring groove.

Rotate expander in groove until butt ends are on

PTO side of piston (see illustration below).

NOTE: Ends must butt squarely together and

must not overlap.

2. Install lower rail with end gap positioned on the

intake side of piston.

3. Install upper rail with end gap positioned on the

exhaust side of piston.

4. Install second ring with marking facing top of piston.

Rotate ring to position the end gap toward intake

side of piston as shown below.

ENGINE

Polaris 2014 RZR XP 1000 Service Manual

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