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Home›Engines›Cummins/Onan JB

Cummins/Onan JB Engine Engine

The Cummins/Onan JB is a 0.98 L 2-cylinder air-cooled engine rated at 1500 rpm. It powers generator sets from Cummins/Onan, including the J.

Also known as: Onan JB

0.9834 L
Displacement
2
Cylinders
1500 rpm
Rated speed

Engine specifications

Displacement0.9834 L
Cylinders2
AspirationAir-cooled
Rated speed1500 rpm

Generator sets powered by this engine

1
Cummins/Onan J

Troubleshooting

1

Symptoms & remedies

SymptomCause
OverheatingDirty cooling surfaces, operating without the engine air housing, and incorrect installation.

Fault codes and symptom→remedy steps extracted from this engine’s service/owner documentation; verify against the official manual before servicing.

Common questions

What is the displacement of the Cummins/Onan JB?

The Cummins/Onan JB has a displacement of 0.9834 liters with 2 cylinders.

Which generators use the Cummins/Onan JB engine?

The Cummins/Onan JB powers 1 generator set(s), including Cummins/Onan J.