Mitsubishi FG15NM Forklift Engine Service Manual (99789-77100)

This FG15NM is a small LPG counterbalance truck you'll see loading docks, small warehouses, and light yard work. The service manual is what techs grab once the warranty's over and they're chasing a fault code, checking clearances, or rebuilding something instead of guessing. You're looking at the ENGINE service manual only, so this is for the power unit on an FG15NM, not for mast, hydraulics, axles, or general chassis work.

What this manual helps you do

• Diagnose hard-start, no-start, and low-power engine complaints on an FG15NM
• Check and adjust ignition, fuel, and emission-control settings to factory spec
• Follow step-by-step teardown and reassembly of the engine and related components
• Replace gaskets, seals, timing components, and other internal engine parts correctly
• Troubleshoot engine-related fault codes and verify repairs with the right tests

Who this is for

This is for a warehouse maintenance tech, dealer tech, independent forklift shop, or rental fleet mechanic doing engine work on an FG15NM. If you need mast, steering, brake, or hydraulic procedures, or basic operating instructions, you need the chassis service manual and the operator's handbook instead.

FAQ

Q: What format is it in and how readable are the diagrams?

A: You get 9 PDF files with a real text layer, so they're searchable and you can copy text. Engine diagrams and schematics are clear on a normal laptop or tablet.

Q: How do I know it fits my exact FG15NM truck?

A: It's written for the FG15NM model line. For edge cases, match your truck's model code and engine type to FG15NM before you rely on it.

Q: Is this the right document if I'm doing full truck maintenance?

A: No. This is the engine service manual only. For mast, hydraulics, transmission, axles, and full truck PM, you'll want the separate chassis service manual.

Bottom line: If you're repairing or overhauling the engine on a Mitsubishi FG15NM, this is the right manual. If you need mast, hydraulic, or axle info, it isn't.

Models covered by this manual

Mitsubishi publication 99789-77100 is the factory service manual for the FG15NM. The same publication covers 6 further forklift models: FG18NM, FG20CNM, FG20NM, FG25NM, FG30NM, FG35NM. Check the model and serial number on your data plate before ordering.

Table of Contents:

• Foreword
• General Information
• Maintenance
• Tune Up
• Mechanical
• Control
• Lubrication and Cooling
• Fuel
• Electrical

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