1987 Yamaha Venture Royale Service Manual

The 1987 Yamaha Venture Royale is a luxury touring motorcycle featuring a 1294cc V4 engine, shaft drive, comprehensive electronic instrumentation, onboard air compressor, adjustable suspension, and extensive touring amenities. This service manual covers maintenance procedures, specifications, troubleshooting, and repair instructions for proper servicing of all major systems including engine, transmission, electrical, chassis, and accessories.

1. General Information 2. Specifications 3. Periodic Maintenance 4. Engine Service 5. Fuel System 6. Cooling System 7. Electrical System 8. Chassis & Suspension 9. Transmission & Drive 10. Troubleshooting 11. Wiring Diagrams

General Information

This manual provides detailed service information for the 1987 Yamaha Venture Royale XVZ13D. Includes identification data, general specifications, and safety precautions.

Item	Description
Model	XVZ13D Venture Royale
Year	1987
Engine Type	Liquid-cooled 4-stroke, V4, SOHC
Displacement	1294cc
Frame Type	Double cradle steel
Transmission	5-speed constant mesh
Final Drive	Shaft drive

Specifications

Engine: 1294cc liquid-cooled V4, 70° bank angle
Bore x Stroke: 79.0 x 66.0 mm
Compression Ratio: 10.5:1
Fuel System: Mikuni BDS34 carburetors (4)
Ignition: TCI (Transistor Controlled Ignition)
Starting System: Electric starter
Lubrication: Wet sump
Transmission: 5-speed with overdrive 5th gear
Front Suspension: Air-assisted telescopic fork
Rear Suspension: Air-assisted monoshock
Brakes: Dual disc front, single disc rear
Tires: 130/90-16 front, 150/90-15 rear
Fuel Capacity: 6.0 US gallons (22.7 liters)
Oil Capacity: 4.2 liters with filter change

Periodic Maintenance

Regular maintenance intervals and procedures to ensure optimal performance and longevity.

Every 600 miles/1000 km: Check engine oil level, tire pressure, chain tension, brake fluid
Every 4000 miles/6000 km: Change engine oil and filter, check valve clearance
Every 8000 miles/12000 km: Replace spark plugs, air filter, check carburetor synchronization
Every 16000 miles/24000 km: Replace brake fluid, check wheel bearings, lubricate drive shaft
Seasonal: Check battery, coolant, brake pads, tire wear

WARNING! Always use Yamaha recommended fluids and genuine parts. Follow torque specifications precisely.

Engine Service

Complete engine disassembly, inspection, and reassembly procedures.

Component	Service Procedure
Cylinder Head	Valve adjustment: IN 0.10-0.15mm, EX 0.15-0.20mm
Pistons & Rings	Inspect for wear, measure ring end gap
Camshaft	Check lobe height, bearing clearance
Crankshaft	Measure runout, journal diameters
Clutch	Check plate thickness, spring free length
Oil Pump	Inspect rotor clearance, check pressure

Torque Specifications: Cylinder head bolts: 40 Nm, Connecting rod bolts: 27 Nm, Crankcase bolts: 12 Nm

Fuel System

Carburetor service, fuel pump testing, and fuel delivery system maintenance.

Remove carburetors as assembly from intake manifolds
Disassemble carburetors, clean all jets and passages
Check float height: 21.0 ± 1.0mm
Synchronize carburetors using vacuum gauges
Test fuel pump pressure: 2.5-3.5 psi
Inspect fuel lines and vacuum lines for cracks

Jet Sizes: Main jet #132.5, Pilot jet #40, Needle jet Y-0, Air jet #130

Cooling System

Radiator, water pump, thermostat service and coolant replacement.

Coolant Capacity: 3.2 liters (including reservoir)
Thermostat Opening: 80-84°C
Radiator Cap Pressure: 0.9-1.1 kg/cm²
Coolant Type: Ethylene glycol antifreeze

Pressure test system at 1.2 kg/cm². Check water pump for leaks at weep hole. Replace coolant every 2 years.

Electrical System

Battery, charging system, ignition, and accessory circuit service.

Component	Specification
Battery	12V 20Ah, Maintenance free
Alternator Output	350W @ 5000 RPM
Starter Motor	0.8 kW
Spark Plug	NGK DPR8EA-9, Gap 0.8-0.9mm
Ignition Timing	10° BTDC @ 1500 RPM
Fuses	Main 30A, Headlight 15A, Signal 10A

Test stator resistance: 0.36-0.48Ω between terminals. Check regulator/rectifier diode continuity.

Chassis & Suspension

Frame, suspension components, brakes, and wheels service procedures.

Front Fork: Oil capacity 486ml per leg, oil type 10W
Rear Shock: Air pressure 0-57 psi, check damping operation
Steering Head: Adjust bearing preload, check for play
Brakes: Pad wear limit 1.0mm, disc thickness limit 4.0mm
Wheels: Check runout: axial 2.0mm max, radial 2.0mm max
Tires: Cold pressure: Front 36 psi, Rear 40 psi (solo)

Transmission & Drive

Gearbox, clutch, and final drive service procedures.

Transmission Oil: API GL-4, SAE 80W-90, Capacity 1100ml
Clutch: Cable free play 10-15mm, plate wear limit 2.7mm
Drive Shaft: Lubricate splines with moly paste during service
Final Drive: Oil capacity 230ml, API GL-5 SAE 80W-90
Gear Ratios: 1st 2.666, 2nd 1.800, 3rd 1.336, 4th 1.095, 5th 0.926

Check transmission for proper shifting through all gears. Inspect shift forks for wear.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Hard starting	Weak battery, dirty carbs	Charge battery, clean carburetors, check choke operation
Overheating	Low coolant, stuck thermostat	Check coolant level, test thermostat, flush radiator
Poor idle	Vacuum leak, sync needed	Check vacuum lines, synchronize carburetors
Electrical failure	Bad connections, failed component	Check grounds, test stator output, verify regulator
Transmission noise	Low oil, worn gears	Check oil level, inspect gears for wear patterns
Brake pulsation	Warped discs, worn pads	Measure disc runout, replace pads if worn

Wiring Diagrams

Complete electrical schematics for main harness, accessory circuits, and component locations.

Main wiring harness routing and connector identification
Ignition system circuit with TCI unit connections
Charging system with alternator and regulator/rectifier
Lighting circuits including headlight, taillight, and signals
Accessory circuits for radio, intercom, and cruise control
Ground distribution points and fuse box layout

Note: Refer to color-coded diagrams for proper wire identification and troubleshooting.