Generac — LS1 & LS2 Limit Switch Replacement (W Style)

Repair & overhaul · Limit Switches LS1/LS2

From a Generac service manual — check it applies to your exact model before use.

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Procedure

1. Disable generator from starting. Disconnect negative battery cable. Verify utility power secured.
2. Remove conductors from main lugs and control wires from A1, A2, B1, B2, T1, T2.
3. Remove main contactor assembly from transfer switch and lay on its back.
4. Remove outer auxiliary limit switches and four through bolts on right side of main contactor assembly.
5. Carefully split contactor assembly in half.
6. Replace LS1 or LS2 limit switches as required.
7. Reassemble both sides of contactor assembly.
8. Ensure roller goes back in both roller arms. Verify wires are free and not pinched.
9. Ratcheting the contactor back and forth may be necessary for alignment.
10. Continue cycling until both roller guide arms are fully in guide holes.
11. Reinstall four through bolts and associated hardware. Do not over tighten (2.3 ft-lbs).
12. Reconnect all control wires and conductors.

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.

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