Segment:
Middleweight Sport-Touring Motorcycle
Competitors 1995:
Honda CB750, Kawasaki ZZ-R600, Suzuki Bandit 600
Vehicle Strengths:
Comfortable ergonomics for commuting and touring, reliable inline-four engine, accessible performance
Target Audience:
Yamaha XJ600/XJ600S owners, DIY mechanics, restoration enthusiasts
Engine:
Disassembly, assembly, diagnosis, tuning, lubrication, cooling, ignition
Fuel System:
Carburetor overhaul, fuel pump, fuel filter, fuel tank maintenance
Transmission:
Clutch operation, gearbox inspection, gear shift mechanism, lubrication
Drivetrain:
Chain adjustment, sprockets, final drive maintenance
Suspension:
Front fork disassembly/rebuild, rear shock absorber, linkage maintenance
Brakes:
Front and rear brake caliper service, master cylinder overhaul, brake fluid replacement, bleeding procedures
Electrical System:
Wiring diagrams, battery maintenance, charging system (stator, regulator/rectifier), starter motor, lighting, ignition system components
Frame And Bodywork:
Chassis inspection, fairing removal/installation, seat, handlebars, footpegs
Cooling System:
Radiator, coolant, fan operation
Maintenance:
Regular service checks, oil changes, filter replacements, lubrication points, chain maintenance
Troubleshooting:
Systematic diagnostic procedures for common and uncommon issues
Repair:
Step-by-step instructions for component replacement and repair
Rebuilding:
Complete engine, gearbox, and suspension component rebuilds
Tune Up:
Carburetor synchronization, ignition timing adjustments, valve clearance checks
Depth:
Extensive, covering everything from basic user maintenance to complete engine rebuilds and advanced electrical diagnostics
Engine Type:
Inline-four cylinder, DOHC, 4-stroke
Bore X Stroke:
62.0 mm x 49.6 mm
Compression Ratio:
10.0:1
Horsepower:
Approx. 65-70 HP @ 9,000 RPM
Torque:
Approx. 53 Nm (39 lb-ft) @ 7,500 RPM
Fuel Delivery:
4x Mikuni B26 carburetors
Fuel Type:
Unleaded gasoline, minimum 87 octane
Ignition System:
Digital TCI (Transistor Controlled Ignition)
Oil Type:
Yamalube 4 (or equivalent) SAE 10W-40 API SG or higher
Oil Capacity:
3.0 L (3.2 US qt) with filter change
Cooling Method:
Liquid-cooled
Coolant Type:
Yamaha's Anti-Rust Liquid Coolant (or 50/50 mixture of ethylene glycol and distilled water)
Transmission Type:
6-speed constant mesh
Clutch Type:
Wet, multiple disc
Gear Ratios:
Specific ratios detailed in manual (e.g., 1st: 2.571, 2nd: 1.818, 3rd: 1.400, 4th: 1.130, 5th: 0.960, 6th: 0.852)
Final Drive:
O-ring sealed chain, 525 pitch
Safety Ratings:
N/A (Motorcycle safety is not rated in the same manner as automobiles)
Braking System:
Dual piston hydraulic disc brakes front and rear
Tire Specifications Front:
110/80-17M/C 54H
Tire Specifications Rear:
130/80-17M/C 63H
Lighting:
Halogen headlight, LED taillight (typical), incandescent turn signals
Oil Change Interval:
Every 6,000 km (3,700 miles) or 6 months, whichever comes first
Major Service Interval:
Every 12,000 km (7,500 miles) - includes valve clearance check, spark plug replacement
Chain Lubrication:
Every 1,000 km (600 miles) or after riding in rain
Brake Fluid:
DOT 3 or DOT 4 (specified in manual)
Fork Oil:
Yamaha's Fork Oil G10 or equivalent (e.g., 10W)
Coolant Capacity:
Approx. 1.9 L (2.0 US qt)
Common Problems:
Carburetor synchronization drift, potential cam chain tensioner noise, aging electrical connectors, stator failure (less common but possible)
Recommended Parts Replacement:
Spark plugs (e.g., NGK CR9E or equivalent), air filter, oil filter (e.g., Yamaha 5H0-13440-90 or equivalent)
Brand Focus:
Yamaha Motor Company, known for innovation in motorcycles and musical instruments.
Predecessors:
XJ600 (pre-Seca II models, often with different styling and engine tuning)
Successors:
Yamaha FZS600 Fazer, Yamaha YZF600R Thundercat (though these are more sport-oriented)
Production Period:
Mid-1990s to early 2000s for the Seca II variant.
Manufacturing Location:
Japan
