Lower Crankcase Preparation - Polaris RZR 900 2017 Service Manual

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5. Install the balance shaft, placing the tooth with the

alignment dot in-line with the dot on the crankshaft

9930588 R02 - 2017-2020 RZR 900 900/S 900/S4 1000/S 1000/S4 Service Manual

ENGINE / COOLING SYSTEM

LOWER CRANKCASE PREPARATION

Always replace plain bearings when the crankcase or

connecting rods have been disassembled. Refer to

bearing selection procedures.

1. Remove all traces of crankcase sealant from the

crankcase mating surfaces. Inspect the surfaces

closely for nicks, burrs or damage.

2. Clean bolt hole threads to remove any oil or

crankcase sealant.

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 crankcase.

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