Generac — Remove and Install Flywheel
Repair & overhaul
From a Generac service manual covering: 0D3358, 0D7675, 0D9033, 0D9708, 0E0038, 0E3342, EVT-04174-0, EVT-04198-0, EVT-04629-0, EVT-04629-1, EVT-04630-0, EVT-04712-0…. Check it applies to your exact model before use.
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Before you start
- DO NOT strike flywheel with a hard object or metal tool as this may cause flywheel to shatter in operation
- Flywheel puller bolts may damage lighting coil if turned in too far
Procedure
- Remove flywheel nut and washer
- Remove fan retainer and fan
- Reinstall flywheel nut; turn nut down flush with top of threads
- Install flywheel puller and tighten puller screws equally until flywheel loosens
- Inspect flywheel key, keyways, flywheel and crankshaft for damage, cracks or wear
- Clean flywheel and crankshaft taper removing all oil, dirt or grease
- Insert flywheel key into crankshaft, align keyways and assemble flywheel to crankshaft
- Install washer and flywheel nut and torque to 204.0 Nm (150 ft. lbs.)
- Assemble fan and retainer to flywheel and torque screws to 21.7 Nm (192 in. lbs.)
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Flywheel nut torque 204.0 Nm (150 ft. lbs.)
- Fan retainer screws 21.7 Nm (192 in. lbs.)
Source: Generac service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.