Honda GL1800 Gold Wing 2001-2005 Factory Service Manual (P/N C4085-91017, August 2002)
Honda Models Covered & Key Technical Specifications
Models: Honda GL1800, Honda GL1800A
Sub-models / Variants: GL1800 (Standard, no ABS), GL1800A (ABS equipped)
Model Years: 2001–2005
Technical Data:
- Engine: Flat six, 1,832 cm³ (111.8 cu in), 9.8:1 compression
- Valve Train: OHC, silent cam chain driven
- Transmission: Constant mesh, 5-speeds with reverse
- Fuel System: PGM-FI (Programmed Fuel Injection), 40 mm throttle bore
- Suspension: Telescopic fork (front), Swingarm (rear)
- Fuel Capacity: 25 liters (6.6 US gal, 5.5 Imp gal)
- Engine Oil Capacity: 3.7 liters (3.9 US qt, 3.3 Imp qt) after filter change
Honda Manual Features & Content Preview
- Covers 2001–2005 Honda GL1800 and GL1800A Gold Wing models, including both standard and ABS-equipped touring variants
- Official Honda Motor Co., Ltd. service publication P/N C4085-91017, dated August 2002
- Features 47 detailed exploded-view wiring and harness routing diagrams
- Delivers 759 pages of technical service data, maintenance schedules, and factory specifications
- Serves as the primary technical reference for the entire 2001–2005 GL1800 production cycle
Manual Contents
This official Honda Gold Wing service document provides the critical technical data professional mechanics and advanced enthusiasts require to service these complex touring motorcycles. Rather than basic overviews, the publication focuses strictly on mechanical assemblies. You get precise reference material for the 1,832 cm³ flat-six engine, PGM-FI fuel injection system, and the hydraulic clutch. Workshop routines move faster when you have exact system inspection parameters and teardown sequences at your fingertips. The text details cooling, lubrication, and electrical networks, alongside chassis-specific data for the unique suspension and brake setups found on standard and ABS models. Because motorcycle maintenance inherently involves critical safety systems, always cross-reference these factory parameters during assembly to ensure total roadworthiness and prevent component failure.
Specifications and Reference Data
Technical parameters are logically grouped by system to accelerate bench work and diagnostic testing. Need to rebuild the top end or address the final drive? The text lists strict factory torque values, calling for 44 Nm on the cylinder head bolts and 186 Nm for the mainshaft bearing lock nuts. Electrical troubleshooting is streamlined with comprehensive connector pinouts, sensor resistance values, and charging system outputs. You will also find exact fluid capacities: engine oil requires 3.7 liters after a filter change, while the cooling system demands 3.53 liters of radiator coolant. Additional data points include a 0.15 mm intake valve clearance and the factory front tire size requirement of 130/70R18M/C 63H.
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