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Cummins/Onan WC4-10S-5 — SERVICE DIAGNOSIS

For the Cummins/Onan WC4-10S-5.

Applies to: Cummins Onan Wc4 10S 5

Procedure

  1. 1. Fuel tank empty. Re
  2. 2. Poor fuel. 5.
  3. 3. Intake valves leaking.
  4. 1. Oil leaks from oil pan or 4.
  5. 2. Oil too light or diluted Te
  6. 3. Bearing clearance too great.

Source: manual:948-0033 Onan WC4-10s-5 Genset Service & Parts manual.pdf. Figures and steps are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.