1998 Yamaha GP800 WaveRunner GP Service Manual
Covers jet pump unit, 2-stroke engine, carburetor systems with spec torques—impeller clearance 0.32–0.40 mm, compression ratio 6.6:1. Technical reference LIT-18616-01-93.
Manual Preview
Sample pages from the 1998 Yamaha GP800 WaveRunner GP Service Manual manual
Purchase & Download
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha GP800 WaveRunner GP
Build Years: 1998
Serial Numbers: GU0: 800101–, 66E: 000101–, 66E: 500101–
Technical Data:
- Engine displacement: 784 cc (47.8 cu. in.)
- Engine configuration: 2-stroke, 2-cylinder, loop charge
- Bore × stroke: 80.0 × 78.0 mm (3.15 × 3.07 in)
- Compression ratio: 6.6:1
- Maximum output: 88.3 kW (120 hp) at 7,000 r/min
- Carburetor: BN44 (Mikuni) × 2
- Fuel capacity: 50 L (13.2 US gal)
- Battery: 12 V / 68.4 kC (19 Ah)
- Propulsion system: Jet pump, axial flow, single stage
Yamaha Manual Features & Content Preview
1998 Yamaha GP800 WaveRunner GP Service Manual
- Covers the 1998 Yamaha GP800 WaveRunner GP featuring the 784 cc 2-stroke engine and single-stage axial flow jet pump propulsion system
- Official Yamaha publication LIT-18616-01-93, first edition February 1998
- Contains 47 exploded-view diagrams, 16 maintenance specification tables, and 2 complete cable and hose routing schematics
- Re-download the file any time, no expiration
- Full-text search finds any part number in seconds
- Accessible from your device as soon as the order is placed
- This 1998 first edition serves as the foundational reference for the GP800 series launch build, documenting all mechanical and electrical specifications unique to the 66E engine and GU0 hull codes
Technical Documentation Structure
The 1998 Yamaha GP800 WaveRunner GP service manual details the maintenance and technical requirements for the water vehicle’s primary systems. Technical chapters categorize the power unit, fuel system, electrical components, and jet pump assembly for efficient reference. Each section provides exploded diagrams accompanied by corresponding part identification charts to clarify assembly order and fastening specifications. Specialized sections document system-wide routing for fuel lines, hoses, and wiring harnesses to ensure correct vehicle configuration.
Specification Highlights
Engine tolerances and electrical reference values are documented to facilitate proper service assessment of the 1998 Yamaha GP800 WaveRunner GP. Piston-to-cylinder clearance is specified at 0.100–0.105 mm in the maintenance table. The stator pulser coil resistance is listed at 445.5–544.5 ohms. Impeller-to-housing clearance is maintained at a maximum of 0.6 mm for the GP800 propulsion unit. Additional data points include fuel/oil mixing ratios, tightening torques for major housing bolts, and battery electrolyte gravity standards. Note: This page is a contents overview for the manual. It does not provide repair or diagnostic instructions. An official 218-page Yamaha OEM workshop manual covering the 1998 Yamaha GP800 WaveRunner GP, documenting engine, chassis, electrical, and fuel-system specifications for the 66E-series engine block.
Manual FAQ, Purchase & Download Details
Customer Reviews
Read what our customers say about this Yamaha Personal-Watercraft-PWC manual and share your own experience.