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Home›Repair guides›Spark Plug Installation and Tightening

Cummins/Onan NHM — Spark Plug Installation and Tightening

For the Cummins/Onan NHM.

Applies to: Cummins Onan Nhm

Before you start

  • To prevent crossthreading a spark plug, always thread it in by hand until it seats

Procedure

  1. To prevent crossthreading a spark plug, always thread it in by hand until it seats
  2. Tighten the spark plug according to Section 4. Torque Specifications
  3. Alternatively, turn it with a wrench an additional 1/4 turn

Tools required

  • Wrench

Source: manual:965-0531 BGM NHM Service February 96 done.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.