Balance Shaft Installation - Polaris ACE 900 2017 Service Manual

ENGINE / COOLING SYSTEM
9. Carefully lower the crankshaft into upper crankcase.
Guide connecting rods onto the rod journals of
crankshaft as necessary.
10. Adjust the PTO crankshaft seal so it rests properly in
the upper crankcase.
11. Clean bolt hole threads in connecting rod to remove
all oil.
12. Install matching rod cap on connecting rod using
markings made upon disassembly.
13. Install new bolts and tighten evenly until snug.
14. Torque connecting rod bolts to specification
TORQUE
Connecting Rod Bolts:
Step 1: 9 ft-lb (12 Nm)
Step 2: 22 ft-lb (30 Nm)
Step 3: Tighten add'n 90°
3.74

BALANCE SHAFT INSTALLATION

1. Clean the upper crankcase balance shaft bearing
bore surfaces.
2. Align tab of new balance shaft bearings
slot in each bearing bore of crankcase. Press
bearing insert firmly into place.
3. Rotate the crankshaft until the alignment dot on the
crankshaft MAG end gear is visible.
4. Apply Polaris PS-4 engine oil to both balance shaft
journals.
o
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9929422 R02 - 2017-2019 ACE 900 Service Manual
© Copyright Polaris Industries Inc.
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