Generac — Adjust Armature (Ignition Coil) Air Gap
Adjustments · Ignition armature / coil
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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Procedure
- Rotate flywheel until magnet is under armature (coil) laminations
- Place a 0.20-0.30 mm (.008"-.012") thickness gauge between magnet and armature laminations
- Loosen mounting screw so magnet will pull armature down against the thickness gauge
- Torque screws to 12.2 Nm (9 ft. lbs.)
- Rotate flywheel to remove the thickness gauge
- Repeat for the second armature
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Armature air gap 0.20-0.30 mm (.008"-.012")
- Screw torque 12.2 Nm (9 ft. 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.