Mitsubishi FG55NF Forklift Engine Service Manual (99739-11100)

This Mitsubishi FG55NF is a big LPG counterbalanced truck that spends its life on docks, yards, and heavy production floors. The manual here is the engine service manual for that truck, not the chassis manual. People grab this when they're chasing a running issue, need specs to set something up right, or have an engine half stripped on a Saturday and no dealer on the phone.

What this manual helps you do

• Diagnose hard-start, no-start, or power-loss problems on the FG55NF engine
• Check and set ignition, fuel, and emission control adjustments to spec
• Follow teardown and rebuild procedures for the LPG engine and its subassemblies
• Replace gaskets, seals, and major engine components with the right sequences and torque patterns
• Troubleshoot engine-related fault codes and verify repairs with the correct tests

Who this is for

This is for a warehouse or plant maintenance tech, dealer technician, independent forklift shop, or rental fleet mechanic who needs workshop-level detail on the FG55NF engine. If you need mast, steer axle, hydraulics, brakes, or basic operating instructions, this is the wrong book; you'd want the chassis service manual or the operator's handbook instead.

FAQ

Q: What format is it in, and can I search it or read diagrams clearly?

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: Will this cover my serial number or variant?

A: It's for FG55NF trucks from serial 111219 and up. If your plate shows FG55NF with a serial in that range or higher, this is the right engine manual.

Q: Is this the right document if I'm chasing a hydraulic or mast issue?

A: No. This only covers the engine. For mast, hydraulics, axles, steering, and frame, you need the matching chassis service manual.

Bottom line: If your problem is under the hood on an FG55NF in the 111219-up range, this is the right engine manual. If it's anything on the truck frame, look elsewhere.

Models covered by this manual

Mitsubishi publication 99739-11100 is the factory service manual for the FG55NF, serial range 111219-up. The same publication covers 4 further forklift models: FG40NF, FG45NF, FG50CNF, FG50NF. Check the model and serial number on your data plate before ordering.

Table of Contents:

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

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