The Kawasaki KE125 was a standout two-stroke enduro from the 1970s that combined Kawasaki expertise in two-stroke engine design with off-road chassis geometry for a capable and affordable trail motorcycle. The 125cc piston-port single delivered the characteristic punchy two-stroke power delivery through a six-speed transmission, with long-travel suspension and a rugged steel frame built to handle trail abuse. Simple to work on, economical to run and fun to ride, the KE series earned a loyal following among off-road riders and enduro competitors. This complete workshop manual covers every aspect of KE125 maintenance and repair from routine top-end replacements to full engine bottom-end rebuilds. Topics include crankcase splitting for seal and bearing service, Mikuni carburetor overhaul with jet specifications, CDI ignition testing, six-speed transmission inspection, clutch maintenance, suspension service, brake overhaul, complete electrical system diagnostics with wiring diagrams, and all factory torque specifications and adjustment procedures. Essential for keeping your vintage Kawasaki two-stroke running strong.
1974-1980 Kawasaki KE Models 125 A5 Service Repair Workshop Manual PDF
VEHICLE/EQUIPMENT INTRODUCTION:
The Kawasaki KE125 A5 was a highly regarded two-stroke enduro motorcycle from the golden age of Japanese off-road motorcycles. During the 1970s, Kawasaki dominated the two-stroke market with their innovative expansion chamber exhaust technology and high-revving single-cylinder engines. The KE125 featured Kawasaki piston-ported two-stroke engine with a Mikuni carburetor, CDI ignition and a robust six-speed transmission designed for both trail riding and competitive enduro events. The long-travel suspension, rugged steel frame and lightweight construction made the KE125 an accessible entry point into off-road motorcycling while the proven Kawasaki two-stroke powerband delivered the punchy throttle response that two-stroke enthusiasts demand. These motorcycles were known for their simplicity, reliability and the characteristic exhaust note that only a well-tuned two-stroke can produce.
SERVICE & REPAIR SCOPE:
- Complete engine disassembly and rebuild
- Cylinder inspection, measurement and chrome plating assessment
- Piston ring end gap measurement and piston installation
- Crankshaft bearing and seal replacement with crankcase split
- Crankshaft runout and connecting rod big end bearing clearance
- Carburetor Mikuni VM series complete overhaul and jetting
- Reed valve inspection and replacement
- Exhaust expansion chamber inspection and baffle service
- Six-speed transmission disassembly and gear inspection
- Shift drum and shift fork wear measurement
- Primary drive and clutch overhaul
- Clutch spring specification and friction plate thickness check
- CDI ignition system stator testing and pulse coil resistance
- Spark plug specification and fouling diagnosis
- Fuel tap vacuum operation and petcock diaphragm service
- Oil injection pump adjustment and cable setup (if equipped)
- Front fork oil seal replacement and damping rod inspection
- Rear shock absorber replacement
- Swingarm needle bearing service
- Steering head bearing adjustment
- Drum brake shoe replacement and cam lubrication
- Chain and sprocket replacement with alignment adjustment
- Electrical system wiring harness repair
- Lighting system troubleshooting
- Kick start ratchet mechanism service
- Complete maintenance and lubrication schedule
- Factory torque specifications
TECHNICAL SPECIFICATIONS:
- Engine: Air-cooled, single-cylinder, two-stroke, piston port
- Displacement: 125 cc
- Bore x Stroke: approximately 56 x 50.6 mm
- Compression ratio: varies by model year
- Carburetor: Mikuni VM series
- Ignition: CDI
- Transmission: 6-speed constant mesh
- Clutch: Wet multiplate
- Frame: Steel cradle
- Front Suspension: Telescopic fork
- Rear Suspension: Dual shock absorbers
- Brakes: Drum front and rear
DIAGNOSTIC INFORMATION:
- No-start diagnosis covering fuel delivery, compression and spark
- Lean condition identification from air leaks and carburetor jetting
- Rich condition symptoms from incorrect jetting and oil pre-mix
- Two-stroke power loss from exhaust port carbon buildup
- Crankcase air leak symptoms causing lean runaway
- Clutch slip from worn plates and weak springs
- Gear jumping from bent shift forks and worn dogs
- Ignition failure from faulty CDI unit or stator coil
- Fork oil leak and seal replacement indicators
- Chain stretching and sprocket hook wear inspection
ILLUSTRATIONS & DIAGRAMS INCLUDED:
- Complete engine exploded views with part numbers
- Carburetor cross-section with jet sizes and needle position
- Clutch and primary drive assembly diagrams
- Wiring diagram for lighting and CDI systems
- Frame and suspension assembly illustrations
- Drum brake mechanism detail
- Exhaust system routing illustrations
- Transmission gear train exploded views
COMPATIBILITY:
- Covers Kawasaki KE125 A5 models
- Model years 1974, 1975, 1976, 1977, 1978, 1979, 1980
- Includes KE series variants
FILE PROPERTIES:
- Format: Searchable PDF
- Language: English
- Delivery: Instant digital download
- Access: Download anytime after purchase
1974-1980 Kawasaki KE Models 125 A5 Service Repair Workshop Manual PDF
VEHICLE/EQUIPMENT INTRODUCTION:
The Kawasaki KE125 A5 was a highly regarded two-stroke enduro motorcycle from the golden age of Japanese off-road motorcycles. During the 1970s, Kawasaki dominated the two-stroke market with their innovative expansion chamber exhaust technology and high-revving single-cylinder engines. The KE125 featured Kawasaki piston-ported two-stroke engine with a Mikuni carburetor, CDI ignition and a robust six-speed transmission designed for both trail riding and competitive enduro events. The long-travel suspension, rugged steel frame and lightweight construction made the KE125 an accessible entry point into off-road motorcycling while the proven Kawasaki two-stroke powerband delivered the punchy throttle response that two-stroke enthusiasts demand. These motorcycles were known for their simplicity, reliability and the characteristic exhaust note that only a well-tuned two-stroke can produce.
SERVICE & REPAIR SCOPE:
- Complete engine disassembly and rebuild
- Cylinder inspection, measurement and chrome plating assessment
- Piston ring end gap measurement and piston installation
- Crankshaft bearing and seal replacement with crankcase split
- Crankshaft runout and connecting rod big end bearing clearance
- Carburetor Mikuni VM series complete overhaul and jetting
- Reed valve inspection and replacement
- Exhaust expansion chamber inspection and baffle service
- Six-speed transmission disassembly and gear inspection
- Shift drum and shift fork wear measurement
- Primary drive and clutch overhaul
- Clutch spring specification and friction plate thickness check
- CDI ignition system stator testing and pulse coil resistance
- Spark plug specification and fouling diagnosis
- Fuel tap vacuum operation and petcock diaphragm service
- Oil injection pump adjustment and cable setup (if equipped)
- Front fork oil seal replacement and damping rod inspection
- Rear shock absorber replacement
- Swingarm needle bearing service
- Steering head bearing adjustment
- Drum brake shoe replacement and cam lubrication
- Chain and sprocket replacement with alignment adjustment
- Electrical system wiring harness repair
- Lighting system troubleshooting
- Kick start ratchet mechanism service
- Complete maintenance and lubrication schedule
- Factory torque specifications
TECHNICAL SPECIFICATIONS:
- Engine: Air-cooled, single-cylinder, two-stroke, piston port
- Displacement: 125 cc
- Bore x Stroke: approximately 56 x 50.6 mm
- Compression ratio: varies by model year
- Carburetor: Mikuni VM series
- Ignition: CDI
- Transmission: 6-speed constant mesh
- Clutch: Wet multiplate
- Frame: Steel cradle
- Front Suspension: Telescopic fork
- Rear Suspension: Dual shock absorbers
- Brakes: Drum front and rear
DIAGNOSTIC INFORMATION:
- No-start diagnosis covering fuel delivery, compression and spark
- Lean condition identification from air leaks and carburetor jetting
- Rich condition symptoms from incorrect jetting and oil pre-mix
- Two-stroke power loss from exhaust port carbon buildup
- Crankcase air leak symptoms causing lean runaway
- Clutch slip from worn plates and weak springs
- Gear jumping from bent shift forks and worn dogs
- Ignition failure from faulty CDI unit or stator coil
- Fork oil leak and seal replacement indicators
- Chain stretching and sprocket hook wear inspection
ILLUSTRATIONS & DIAGRAMS INCLUDED:
- Complete engine exploded views with part numbers
- Carburetor cross-section with jet sizes and needle position
- Clutch and primary drive assembly diagrams
- Wiring diagram for lighting and CDI systems
- Frame and suspension assembly illustrations
- Drum brake mechanism detail
- Exhaust system routing illustrations
- Transmission gear train exploded views
COMPATIBILITY:
- Covers Kawasaki KE125 A5 models
- Model years 1974, 1975, 1976, 1977, 1978, 1979, 1980
- Includes KE series variants
FILE PROPERTIES:
- Format: Searchable PDF
- Language: English
- Delivery: Instant digital download
- Access: Download anytime after purchase
