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Generac 8.1 GN Engine

The Generac 8.1 GN is a 8.1 L naturally aspirated engine. It powers generator sets from Generac, including the SG100 and SG80. It holds 8 L (2.1 gal) of oil and 24.2 L (6.4 gal) of coolant.

Also known as: Generac 8.1 GN

8.1 L
Displacement
8.0 L
Oil capacity
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Engine specifications

Oil capacity8.0 L
Coolant capacity24.2 L
Displacement8.1 L
AspirationNaturally Aspirated

Common problems

4
  • Risk of poisoning 000149
  • Risk of overheating 000165a
  • Equipment damage 000182a
  • CAUTION Figure 4-1. Gearbox Oil Servicing Points 001063

Compiled from service & troubleshooting documentation across every generator set that uses the Generac 8.1 GN.

Common questions

What is the oil capacity of the Generac 8.1 GN?

The Generac 8.1 GN engine has an oil capacity of 8.0 liters.

What is the displacement of the Generac 8.1 GN?

The Generac 8.1 GN has a displacement of 8.1 liters.

Which generators use the Generac 8.1 GN engine?

The Generac 8.1 GN powers 2 generator set(s), including Generac SG100, Generac SG80.

What is a common problem with the Generac 8.1 GN engine?

A commonly reported issue on generators using the Generac 8.1 GN is: Risk of poisoning.