1971–1975 Kawasaki KE100 & G5 Shop Manual (P/N 99997-748-01)

This 1971–1975 Kawasaki KE100 and G5 shop manual is Kawasaki Heavy Industries publication P/N 99997-748-01, first issued September 1, 1975. It brings together adjustment procedures, component disassembly, inspection and repair, and explanations of how the major assemblies work.

• Engine repair: Engine removal and installation, crankcase separation, cylinder and piston service, crankshaft inspection, and rotary-disc valve removal and installation.

• Clutch and transmission: Wet-clutch disassembly, housing and plate inspection, shift-drum and shift-fork service, and primary kickstarter diagnosis.

• Fuel and lubrication: Mikuni VM19SC carburetor service, float-level inspection, pilot and main system maintenance, and Superlube oil-pump adjustment, bleeding, and performance testing.

• Brakes and chassis: Drum-brake inspection, brake cam lever adjustment, front-fork overhaul, steering-stem bearing replacement, and wheel-bearing and drive-chain maintenance.

• Electrical diagnosis: Contact-breaker timing, ignition-coil testing, magneto-stator service, neutral-switch inspection, and lighting, charging, rectifier, and battery checks.

• Service references: Symptom-based troubleshooting, periodic maintenance, component torque tables, special-tool identification, and engine and running performance curves.

Written primarily for motorcycle mechanics in a properly equipped shop, the manual also provides basic maintenance and repair information for owners who already understand mechanical work, tools, and workshop procedures.

Engine Inspection, Rotary Valve, and Primary Kick

The top-end inspection material covers compression testing, cylinder and piston wear, ring condition, and piston-pin and connecting-rod checks. Port-timing data and separate standard dimensions and service limits support assessment before parts are replaced or a cylinder is rebored.

Mechanics get a clear look inside the transmission gear train and primary kickstarter through the Transmission Cross Section and the cross-sectional diagram of Primary Kick. Clutch housing gear backlash checks help distinguish clutch noise from problems in the transmission or kickstarter mechanism.

The rotary-valve section explains how damaged seals can draw transmission oil into the crank chamber, impair running, and eventually leave the transmission short of oil. Crankshaft rebuilding is reserved for a shop equipped with a press, special tools, and precision measuring instruments.

Carburetor Circuits and Superlube Service

The Carburetor Cross Section supports separate explanations of the starter, pilot, main, and float systems. Cleaning and inspection coverage includes jet and needle wear, starter-plunger seating, and fuel-level measurement, helping relate starting or running symptoms to the circuit involved.

The Engine Lubrication System diagram traces oil delivery through the pump, check valve, and injection nozzle. Pump inspection includes output testing and diagnosis of trapped air. The check-valve service caution specifically addresses spring damage caused by compressed air.

Fork, Steering, Wheel, and Brake Work

Front-fork overhaul includes oil-seal replacement, spring inspection, and oil servicing. Steering-stem procedures cover bearing removal, replacement, adjustment, and lubrication, while the wheel sections address bearing condition, rim runout, spokes, and axle inspection.

Brake coverage includes drum and lining wear, camshaft inspection, and cam lever geometry. Drive-chain elongation and sprocket checks provide related wear assessment. Rear shock absorbers receive removal and external inspection coverage; their sealed construction does not permit internal disassembly.

Ignition Tests and Model-Specific Wiring

Ignition diagnosis includes contact-breaker and condenser inspection, coil testing with an electrotester or ohmmeter, and magneto checks. The manual explains the limits of resistance testing when ignition-coil insulation fails under high voltage.

Lighting and charging sections provide separate circuit diagrams and output tests, followed by rectifier, battery, headlight, turn-signal, and horn diagnosis. The appendix contains a G5 wiring diagram and separate KE100-A5 U.S. and Canada wiring diagrams; the A5 designation identifies those electrical diagrams.

The troubleshooting guide groups likely causes by symptoms such as difficult starting, poor running, excessive smoke, and shifting trouble. Fuel and ignition work involve fire and shock hazards; follow the manual’s workshop precautions.

A Preview of Top-End and Ignition Specifications

These examples show a small selection of the manual’s assembly and adjustment data. Cylinder-head nut torque is specified as 2.2 kg-m (16 ft-lbs).

For cylinder replacement or reboring, the standard piston-to-cylinder clearance is 0.025–0.031 mm. The inspection text distinguishes this standard from the considerations that apply when only the piston is replaced.

Specified ignition timing is 20° (1.96 mm) BTDC, with timing-mark and dial-gauge methods described in the adjustment section.

PDF Reading, Printing, and Included Pages

Search, navigation, and wiring detail: PDF text search and embedded bookmarks are not available. Small labels in the full-page wiring diagrams require magnification; rotating the page view also makes these diagrams easier to read.

The ZIP download contains one printable English-language 136-page PDF. That total already includes two cover pages, two conversion-reference pages, and four pages containing the title, foreword, and table of contents. The appendix and index are included in the same publication.