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Hercules G4800 Engine Engine

The Hercules G4800 is a 6-cylinder natural aspirated, turbocharged, turbocharged with after cooling engine rated at 1800 rpm. It powers generator sets from Hercules Engines, including the G4800 Series.

Also known as: Hercules G4800

6
Cylinders
1800 rpm
Rated speed

Engine specifications

Cylinders6
AspirationNatural Aspirated, Turbocharged, Turbocharged with After Cooling
Rated speed1800 rpm

Generator sets powered by this engine

1
Hercules Engines G4800 Series

Common problems

7
  • SYSTEM HAS WEAK OR NO OUTPUT
    Fix: Check stator (9) resistance - replace if defective - see 5.0 below. Check circuit board assembly (27) - replace if defective - see pg. 11.
  • ONE OUTPUT DOES NOT FIRE
    Fix: Check that the 2-lead pick-up coil connector is fully plugged into the circuit board receptacle. If not, replace pick-up coil assembly (26a) - see pg. 11.
  • Fuel System - Fuel Pump Malfunction - 2, Ignition System - Spark Plug Misfire - 8 F 2&8 4
  • Engine - Cylinder C - Spark Plug Misfire - 2 E Cc 2
  • Distributor - Distributor Timing Off - 6 D D 6
  • Cylinder C - Excessive Spark Plug Wear - 3 Cc E 3
  • Battery Fault - 5 B F 5

Compiled from service & troubleshooting documentation across every generator set that uses the Hercules G4800.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filter—3000 hr find
Fuel filter—125 hr find
Oil filter—125 hr find
Belt—125 hr find
Coolant—
Coolant filter— find
Oil—

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Common questions

Which generators use the Hercules G4800 engine?

The Hercules G4800 powers 1 generator set(s), including Hercules Engines G4800 Series.

What is a common problem with the Hercules G4800 engine?

A commonly reported issue on generators using the Hercules G4800 is: SYSTEM HAS WEAK OR NO OUTPUT. Fix: Check stator (9) resistance - replace if defective - see 5.0 below. Check circuit board assembly (27) - replace if defective - see pg. 11..