Target Audience:
Professional marine technicians and DIY owners performing their own servicing and repairs
Manual Advantage:
Complete factory-level technical data at a fraction of dealer service cost, delivered instantly as a PDF
Repair Instructions:
Step-by-step procedures for every system with specifications and torque values
Illustrations:
Detailed diagrams and photos supporting disassembly, inspection, and reassembly
Searchability:
Fully searchable digital PDF for fast lookup of procedures and specifications
Engine:
Complete engine removal, disassembly, inspection, machining limits, and rebuild procedures
Fuel System:
Carburetor servicing, fuel pump testing, and fuel line specifications
Lubrication System:
Oil injection system components, testing, and bleeding procedures
Cooling System:
Water cooling flow, passages, and component inspection
Exhaust System:
Exhaust manifold, chamber, and waterbox removal and inspection
Electrical System:
Ignition, starting, charging circuits, and wiring diagrams
Jet Pump / Propulsion:
Impeller removal, wear ring inspection, and pump housing service
Steering and Handlepole:
Steering column, cables, and handlebar assembly service
Hull and Deck:
Hull inspection, deck fittings, seats, and storage compartments
Drive and Coupling:
Engine coupling and drive shaft alignment procedures
Intake and Reed Valves:
Reed valve inspection and intake manifold service
Throttle and Controls:
Throttle cable adjustment and control lever service
Maintenance Schedules:
Periodic inspection and maintenance intervals with lubrication points
Troubleshooting:
Symptom-based diagnostic charts for engine, electrical, and fuel systems
Torque Specifications:
Complete fastener torque values for all assemblies
Special Tools:
Required and recommended special service tools listed per procedure
Adjustments:
Carburetor, ignition timing, cable, and jet pump alignment adjustments
Tightening Sequence:
Bolt tightening sequences for cylinder head and critical assemblies
Specification Tables:
Factory tolerances, wear limits, and measurement data for all components
Wiring Diagrams:
Complete electrical schematics for circuit diagnosis
Inspection Criteria:
Measurement points with factory service limits to determine part replacement
Parts Information:
Exploded views identifying component part names and assembly order
File Format:
PDF (searchable, bookmarked, zoomable)
Compatibility:
Windows, macOS, Linux, iOS, and Android — any device with a PDF reader
Requirements:
A PDF reader application (e.g. Adobe Acrobat Reader, free)
Searchability:
Fully text searchable for fast lookup of any topic
Print Quality:
High-resolution digital pages, printable at full clarity
Binding Type:
N/A — digital download, no physical binding
Paper Type:
N/A — digital download, no physical paper
Engine Type:
Yamaha 784cc (802cc class) two-stroke twin-cylinder, water-cooled
Bore x Stroke:
Approximately 82.0 mm x 74.0 mm
Fuel System:
Twin carburetors with oil injection lubrication
Induction:
Reed valve, crankcase compression two-stroke
Cooling:
Open-loop water cooling
Rated Output:
Approximately 120 hp class at rated RPM
Maximum RPM:
Approximately 7,500 RPM
Fuel Recommendation:
Regular unleaded gasoline, 87 octane minimum
Lubrication:
Yamaha two-stroke oil via variable-rate oil injection
Drive Type:
Direct drive jet propulsion - no conventional gearbox
Impeller:
Three-blade axial-flow stainless steel impeller
Reverse:
N/A - not fitted on this model
Neutral:
N/A - direct drive two-stroke, no neutral gear
Coupling:
Rubber damper engine coupling to drive shaft
Jet Pump:
Axial flow pump with stainless wear ring and steering nozzle
Overall Length:
Approximately 3,120 mm (122.8 in)
Overall Width:
Approximately 1,150 mm (45.3 in)
Overall Height:
Approximately 1,015 mm (40.0 in)
Seating Capacity:
2 persons
Curb Weight:
Approximately 259 kg (571 lb)
Fuel Capacity:
Approximately 50 L (13.2 US gal)
Oil Capacity:
Approximately 5.3 L (5.6 US qt)
Engine Shut-Off:
Safety lanyard (engine stop switch) with wrist cord
Start Protection:
Starter lock-out requiring lanyard attachment
Boarding Step:
Rear boarding grip/step for reboarding
Fire Extinguisher:
Mounting provision for USCG-approved extinguisher
Crash Test Data:
N/A - not applicable to personal watercraft
After First Use:
Initial break-in inspection of fasteners, fluids, and jet pump
Periodic Service:
Scheduled inspections per hours of operation / calendar intervals in the manual
Pre-Season:
Full inspection of cooling, fuel, lubrication, and electrical systems
Engine Oil:
Yamaha two-stroke injection oil (NMMA TC-W3 rated)
Fuel:
Regular unleaded gasoline, 87 octane minimum
Jet Pump Grease:
Water-resistant grease for coupling and bearing points
Cooling:
Raw water open-loop cooling - flush after saltwater use
Impeller / Wear Ring:
Inspect for debris damage and excessive clearance
Spark Plugs:
Replace at scheduled intervals; verify heat range
Reed Valves:
Inspect for cracks and proper sealing
Carburetors:
Clean and rebuild with fuel filter maintenance
Manufacturer:
Yamaha Motor Corporation, established 1955, Japan
PWC Background:
Yamaha entered the personal watercraft market in the late 1980s and became a leading manufacturer
GP Series:
The GP800R is a performance two-seat runabout derived from the GP line
Production:
Produced from model year 2001 with updates carried through subsequent years
Production Location:
Yamaha marine manufacturing facilities, Japan
