1988 Yamaha Waverunner 500 Manual

The 1988 Yamaha Waverunner 500 is a personal watercraft featuring a 497cc two-stroke engine, oil injection system, electric start, manual reverse, and jet pump propulsion. This watercraft is designed for recreational use with a maximum capacity of 2 riders or 400 lbs. Below are key sections covering safety, operation, maintenance, specifications, and troubleshooting.

Features at a Glance

Key components: 497cc two-stroke engine, oil injection system, electric start, manual reverse, jet pump, handlebar controls, and safety lanyard.

Safety Information

Always wear approved personal flotation device. Read and understand all safety warnings before operation.

1. Attach engine cutoff lanyard to wrist or PFD before starting.
2. Never operate under influence of alcohol or drugs.
3. Maintain safe distance from swimmers and other vessels.
4. Be aware of weather and water conditions.
5. Follow all local boating laws and regulations.

WARNING! Carbon monoxide poisoning hazard - never operate in enclosed areas. Risk of propeller injury - keep clear of jet pump intake.

Pre-Ride Inspection

Complete inspection checklist before each use.

1. Check fuel level and oil reservoir.
2. Inspect hull for damage or cracks.
3. Verify bilge is free of water.
4. Test steering operation and throttle response.
5. Check engine cutoff lanyard function.
6. Ensure drain plugs are securely installed.
7. Verify all safety equipment is onboard.

CAUTION! Never operate with fuel leaks or mechanical issues. Address problems before riding.

Specifications

• Engine: 497cc two-stroke, water-cooled
• Bore x Stroke: 72mm x 61mm
• Compression Ratio: 6.5:1
• Fuel System: Mikuni BN-44 carburetor
• Lubrication: Yamaha Autolube oil injection
• Ignition: CDI electronic ignition
• Starting: Electric with manual backup
• Propulsion: Single-stage axial flow jet pump
• Impeller: 3-blade aluminum
• Weight: 298 lbs (dry)
• Fuel Capacity: 10.6 gallons
• Oil Capacity: 3.2 quarts

Controls and Operation

Handlebar controls: Throttle lever, start button, engine cutoff switch. Dashboard: Speedometer, fuel gauge, warning lights.

Key Controls: Ignition key, choke knob, reverse lever, bilge pump switch, engine cutoff lanyard.

Operation: Throttle lever controls speed - squeeze to accelerate, release to decelerate. Steering handlebars control direction. Reverse lever must be engaged manually for reverse operation.

Starting Procedure

Follow proper sequence for safe starting.

1. Attach engine cutoff lanyard to wrist.
2. Insert key and turn to ON position.
3. Pull choke knob if engine is cold.
4. Press and hold start button until engine starts.
5. Release start button once engine is running.
6. Push choke knob in after 30 seconds of operation.
7. Allow engine to warm up before operating.

Tip: If electric start fails, use manual starter rope as backup.

Riding Instructions

Basic riding techniques and maneuvers.

1. Mount from rear of craft, keeping weight centered.
2. Start engine while craft is in deep water.
3. Gradually apply throttle to move forward.
4. Steer by turning handlebars in desired direction.
5. For reverse: Stop forward motion, engage reverse lever.
6. Practice turning at slow speeds before attempting high-speed maneuvers.
7. Always maintain proper lookout for obstacles.

WARNING! Avoid sudden maneuvers at high speed. Be aware of jet thrust direction when near people or objects.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

Storage Procedures

Proper storage prevents damage during off-season.

1. Flush cooling system with fresh water.
2. Add fuel stabilizer to full fuel tank.
3. Change engine oil and filter.
4. Remove spark plugs and add oil to cylinders.
5. Clean hull and apply protective wax.
6. Store in dry, covered location.
7. Remove battery and store on trickle charger.

CAUTION! Never store with fuel in carburetor. Drain fuel system or use stabilizer.

Troubleshooting

Service: Contact authorized Yamaha dealer for major repairs. Use genuine Yamaha parts for replacement.