1988 KX80 Manual

The 1988 Kawasaki KX80 is a high-performance motocross motorcycle designed for young riders, featuring a liquid-cooled 2-stroke 79cc engine, 6-speed transmission, front and rear disc brakes, Uni-Trak rear suspension system, and lightweight frame construction. Below are key sections for safety, specifications, maintenance, operation, and troubleshooting.

1. Features at a Glance 2. Pre-Ride Inspection 3. Specifications 4. Controls and Operation 5. Maintenance Schedule 6. Engine Service 7. Suspension Adjustment 8. Troubleshooting 9. Safety Information 10. Warranty & Support

Features at a Glance

Key components: Liquid-cooled 2-stroke engine, 6-speed transmission, front disc brake, rear disc brake, Uni-Trak rear suspension, aluminum swingarm.

FeatureDescription
Engine TypeLiquid-cooled, 2-stroke single cylinder
Displacement79cc
Transmission6-speed constant mesh
Front SuspensionTelescopic fork, 7.1 inches travel
Rear SuspensionUni-Trak system, 7.9 inches travel
Front BrakeSingle disc
Rear BrakeSingle disc
Fuel Capacity1.6 gallons
Seat Height31.5 inches
Dry Weight147 lbs

Pre-Ride Inspection

Always perform pre-ride inspection before operating motorcycle.

  1. Check fuel level: Ensure adequate fuel for intended ride.
  2. Inspect tires: Check pressure and condition for wear/damage.
  3. Test brakes: Verify front and rear brake operation.
  4. Check chain: Ensure proper tension and lubrication.
  5. Verify controls: Throttle, clutch, and brake levers function smoothly.

WARNING! Failure to inspect motorcycle may result in accident or injury. Always wear proper protective gear.

Specifications

Controls and Operation

Right handlebar: Throttle control, front brake lever. Left handlebar: Clutch lever, choke knob. Foot controls: Gear shift lever (left), rear brake pedal (right).

Starting Procedure: Turn fuel valve ON, set choke for cold starts, kick start using proper technique. Allow engine to warm up before riding.

Shifting: Use clutch for smooth gear changes. Recommended break-in: Vary engine speed, avoid prolonged high RPM during first 10 hours of operation.

Maintenance Schedule

Regular maintenance ensures optimal performance and longevity.

  1. After each ride: Clean air filter, check tire pressure, inspect chain
  2. Every 10 hours: Change transmission oil, check spark plug
  3. Every 20 hours: Clean carburetor, check brake pads
  4. Every 50 hours: Replace piston and rings, inspect bearings
  5. Annually: Replace brake fluid, grease suspension components

Tip: Keep detailed maintenance records for reference.

Engine Service

Proper engine maintenance critical for performance.

  1. Air filter: Clean with solvent, oil lightly, reinstall properly
  2. Spark plug: NGK BR9ES, gap 0.024-0.028 inches
  3. Transmission oil: 10W-40 motorcycle oil, 0.63 quart capacity
  4. Fuel mixture: 32:1 ratio (premium gasoline to 2-stroke oil)
  5. Carburetor adjustment: Pilot screw 1-1/2 turns out, main jet #130

WARNING! Use only recommended oils and fuels. Improper mixture can cause engine damage.

Suspension Adjustment

Front fork: Adjust spring preload via fork caps. Rear suspension: Adjust spring preload via collars on shock spring.

Recommended settings for beginner riders: Softer suspension. For experienced riders: Firmer settings for aggressive riding.

Troubleshooting

SymptomPossible CauseCorrective Action
Hard startingFouled spark plug, stale fuelReplace spark plug, drain old fuel
Poor performanceClogged air filter, incorrect jettingClean air filter, check carburetor settings
Transmission issuesLow oil level, worn clutchCheck oil level, inspect clutch plates
Brake problemsWorn pads, air in linesReplace pads, bleed brake system
OverheatingLow coolant, radiator blockageCheck coolant level, clean radiator fins

Note: Complex repairs should be performed by qualified technician.

Safety Information

Always wear DOT-approved helmet, eye protection, gloves, boots, and protective clothing. Ride within your skill level. Never ride under influence of alcohol or drugs. Obey all traffic laws when riding on public roads.

CAUTION! Motorcycle riding is dangerous. Proper training and protective gear essential.

Warranty & Support

Limited warranty: 30 days for private use. Warranty does not cover racing or competition use. For technical support, contact Kawasaki Motors Corp., U.S.A. at 1-800-661-RIDE or visit www.kawasaki.com.

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