Cummins/Onan 5.6TGHAA11381C — Spark Plug Replacement
Maintenance · Ignition system
For the Cummins/Onan 5.6TGHAA11381C, from the Cummins/Onan service manual.
Applies to: Cummins/Onan TGHAA
Procedure
- Refer to Table 1 for scheduled spark plug replacement (two spark plugs, Figure 7).
- Thread the spark plug in by hand until it seats to prevent crossthreading.
- Torque the spark plug to 8 lb-ft (10 N-m).
Tools required
- Torque wrench Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Spark plug gap 0.025 inch (0.64 mm)
- Torque 8 lb-ft (10 N-m)
Full service-parts list: Cummins/Onan TGHAA →
Source: Cummins/Onan 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.