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Home›Engines›John Deere JU4H-UFADW8

John Deere JU4H-UFADW8 Engine

The John Deere JU4H-UFADW8 is an engine. It powers generator sets from Clarke, including the JU4H-All Models.

Also known as: John Deere JU4H-UFADW8

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Engine specifications

Generator sets powered by this engine

1
Clarke JU4H-All Models

How to read your John Deere engine serial & model number →

Common problems

15
  • Manifold Air Temperature Input Voltage Low 102 04
  • Manifold Air Temperature Input Voltage High 105 03
  • Engine Oil Pressure Low SPN 100 FMI 4
    Fix: Check oil level
  • Cam Position Input Noise 636 02
  • Cam Position Input Missing 636 08
  • Water in Fuel — Continuously Detected 97 00
  • Water in Fuel Signal — Voltage Low 97 04
  • Water in Fuel Signal — Voltage High 97 03
  • Water in Fuel Detected 97 16
  • Throttle Voltage Out of Range 91 14
  • Throttle Invalid 91 09
  • Throttle #3 Input Low 28 04
  • Throttle #3 Input High 28 03
  • Throttle #2 Input Low 29 04
  • Throttle #2 Input High 29 03

Compiled from service & troubleshooting documentation across every generator set that uses the John Deere JU4H-UFADW8.

Maintenance schedule

ItemSpecCapacityPart #Interval
Air filter—
Fuel filter—
Oil filter—
Battery—
Belt—
Coolant—
Oil—
Spark plug—

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 John Deere JU4H-UFADW8 engine?

The John Deere JU4H-UFADW8 powers 1 generator set(s), including Clarke JU4H-All Models.

What is a common problem with the John Deere JU4H-UFADW8 engine?

A commonly reported issue on generators using the John Deere JU4H-UFADW8 is: Manifold Air Temperature Input Voltage Low.