This complete factory service repair manual for the Yamaha XS750 triple-cylinder motorcycle covers model years 1976 through 1981. It provides thorough technical coverage of the unique DOHC inline-three engine, shaft final drive system, carburetor synchronization, and complete chassis maintenance. From triple carburetor vacuum balancing to shaft drive backlash adjustment, every procedure that distinguishes this uncommon motorcycle is documented with factory precision including exploded diagrams, wiring schematics, and torque specifications.
Yamaha XS750 Service Repair Workshop Manual (1976-1981)
VEHICLE/EQUIPMENT INTRODUCTION:
The Yamaha XS750 made its debut for the 1977 model year as Yamahas flagship triple-cylinder motorcycle, entering a competitive market dominated by inline-fours. Yamahas choice of an inline-three configuration was deliberate: the three-cylinder engine offered the low-end torque character of a twin combined with the top-end smoothness approaching that of a four-cylinder. The result was a unique riding experience unavailable from any other manufacturer at the time.
The XS750 DOHC inline-three featured shaft drive making it a natural touring companion. A shaft final drive meant clean low-maintenance propulsion that appealed strongly to commuters and long-distance riders alike. The motorcycle weighed in at over 240 kg dry, placing it firmly in the heavyweight touring category, but its planted highway stability and wind protection from the optional fairing made inter-state journeys comfortable.
Production from 1976 through 1981 spanned several model year updates including transition from points ignition to electronic systems, improved carburetor calibration, and refined suspension valving. The XS750 Special variant introduced luxurious touches like different paint, a two-into-one exhaust, and improved ergonomics. Today the Yamaha triple is appreciated by collectors for its engineering uniqueness and the silky smooth power delivery that only a three-cylinder layout delivers.
SERVICE & REPAIR SCOPE:
- DOHC inline-three cylinder head valve adjustment cam bearing inspection
- Camshaft timing chain tensioner adjustment and guide replacement
- Carburetor trio synchronization three-way vacuum sync procedure
- Clutch basket wear inspection plate and spring replacement
- 5-speed transmission output shaft bearing seal replacement
- Shaft final drive universal joint spider bearing and gear oil service
- Front telescopic fork oil seal bushing replacement and oil refill
- Rear dual shock absorber removal and rebuild
- Triple disc brake caliper piston seal and pad replacement
- Alternator rotor removal and stator winding inspection
- Electronic ignition module testing pickup coil gap adjustment
- Frame steering head bearing race pressing and adjustment
TECHNICAL SPECIFICATIONS:
- Engine: 747cc air-cooled four-stroke DOHC inline-triple
- Bore x Stroke: 63.0 mm x 80.0 mm
- Carburetors: Three Mikuni BS34 units
- Transmission: 5-speed constant mesh
- Final Drive: Shaft drive
- Frame: Steel double cradle
- Front Brake: Twin hydraulic disc
- Rear Brake: Single hydraulic disc
- Wheelbase: 1,485 mm
DIAGNOSTIC INFORMATION:
- Triple carburetor vacuum balancing procedure specifications
- Valve clearance setting with feeler gauge
- Shaft drive backlash measurement and adjustment
- Charging system three-phase alternator output testing
- Ignition advance curve verification with timing light
- Compression test targets and wear limits
- Oil pressure specification checks
ILLUSTRATIONS & DIAGRAMS INCLUDED:
- Engine exploded views for DOHC triple
- Shaft drive final drive unit cutaway
- Complete electrical system wiring diagrams
- Carburetor assembly and jet identification charts
- Fork suspension component layout diagrams
COMPATIBILITY:
- Covers Yamaha XS750 model years 1976 1977 1978 1979 1980 1981
- Includes all XS750 variants including XS750 Special
FILE PROPERTIES:
- Format: Searchable PDF
- Language: English
- Delivery: Instant digital download
- Access: Download anytime after purchase
Yamaha XS750 Service Repair Workshop Manual (1976-1981)
VEHICLE/EQUIPMENT INTRODUCTION:
The Yamaha XS750 made its debut for the 1977 model year as Yamahas flagship triple-cylinder motorcycle, entering a competitive market dominated by inline-fours. Yamahas choice of an inline-three configuration was deliberate: the three-cylinder engine offered the low-end torque character of a twin combined with the top-end smoothness approaching that of a four-cylinder. The result was a unique riding experience unavailable from any other manufacturer at the time.
The XS750 DOHC inline-three featured shaft drive making it a natural touring companion. A shaft final drive meant clean low-maintenance propulsion that appealed strongly to commuters and long-distance riders alike. The motorcycle weighed in at over 240 kg dry, placing it firmly in the heavyweight touring category, but its planted highway stability and wind protection from the optional fairing made inter-state journeys comfortable.
Production from 1976 through 1981 spanned several model year updates including transition from points ignition to electronic systems, improved carburetor calibration, and refined suspension valving. The XS750 Special variant introduced luxurious touches like different paint, a two-into-one exhaust, and improved ergonomics. Today the Yamaha triple is appreciated by collectors for its engineering uniqueness and the silky smooth power delivery that only a three-cylinder layout delivers.
SERVICE & REPAIR SCOPE:
- DOHC inline-three cylinder head valve adjustment cam bearing inspection
- Camshaft timing chain tensioner adjustment and guide replacement
- Carburetor trio synchronization three-way vacuum sync procedure
- Clutch basket wear inspection plate and spring replacement
- 5-speed transmission output shaft bearing seal replacement
- Shaft final drive universal joint spider bearing and gear oil service
- Front telescopic fork oil seal bushing replacement and oil refill
- Rear dual shock absorber removal and rebuild
- Triple disc brake caliper piston seal and pad replacement
- Alternator rotor removal and stator winding inspection
- Electronic ignition module testing pickup coil gap adjustment
- Frame steering head bearing race pressing and adjustment
TECHNICAL SPECIFICATIONS:
- Engine: 747cc air-cooled four-stroke DOHC inline-triple
- Bore x Stroke: 63.0 mm x 80.0 mm
- Carburetors: Three Mikuni BS34 units
- Transmission: 5-speed constant mesh
- Final Drive: Shaft drive
- Frame: Steel double cradle
- Front Brake: Twin hydraulic disc
- Rear Brake: Single hydraulic disc
- Wheelbase: 1,485 mm
DIAGNOSTIC INFORMATION:
- Triple carburetor vacuum balancing procedure specifications
- Valve clearance setting with feeler gauge
- Shaft drive backlash measurement and adjustment
- Charging system three-phase alternator output testing
- Ignition advance curve verification with timing light
- Compression test targets and wear limits
- Oil pressure specification checks
ILLUSTRATIONS & DIAGRAMS INCLUDED:
- Engine exploded views for DOHC triple
- Shaft drive final drive unit cutaway
- Complete electrical system wiring diagrams
- Carburetor assembly and jet identification charts
- Fork suspension component layout diagrams
COMPATIBILITY:
- Covers Yamaha XS750 model years 1976 1977 1978 1979 1980 1981
- Includes all XS750 variants including XS750 Special
FILE PROPERTIES:
- Format: Searchable PDF
- Language: English
- Delivery: Instant digital download
- Access: Download anytime after purchase
