Kawasaki Ninja 250R, GPZ 250R & ZZ-R250 Factory Service Manual Set, 1986–2002 (P/N 99924-1066-01)

Use the base manual for shared maintenance and repair procedures and the supplement for EX250-H-specific procedures, specifications, and wiring. Kawasaki calls for both publications when servicing the ZZ-R250.

The ZZ-R250 application table lists 1990–1994, 1996, and 1999–2002. Match the full model code and beginning frame number to the table before choosing the applicable procedures.

PDF Navigation and Wiring Diagram Detail

Section bookmarks and diagram zoom. Neither PDF supports text search. The base manual has no embedded bookmarks. The supplement has eight bookmarks that open groups of sections. Zoom in to read small wire-color codes and connector labels. Some details at the fold of the supplement’s wiring diagrams remain cut off when enlarged.

The ZIP download contains two printable PDFs with 379 pages total, including the cover pages and the supplement’s model-update chapters.

Engine, Chassis, and Electrical Service

These are selected service topics. The manuals also include cable, wire, and hose routing illustrations and notes on regional emissions equipment.

• Scheduled maintenance. Periodic maintenance charts cover routine checks and adjustments. The base manual’s 16 chapters include a troubleshooting appendix organized by symptom.
• Fuel and cooling. Carburetor removal, separation, cleaning, inspection, fuel-level adjustment, and synchronization accompany cooling-system pressure tests, coolant filling and bleeding, and radiator, thermostat, and water-pump service.
• Engine top end. Cylinder compression testing, camshaft chain timing, valve-clearance adjustment, valve-seat reconditioning, and piston and cylinder inspection are covered.
• Lubrication and drivetrain. Procedures cover oil-pump service and pressure testing, engine removal and installation, clutch inspection, crankcase splitting, transmission shaft disassembly, starter-clutch service, and final-drive alignment.
• Brakes and chassis. Coverage includes caliper and master-cylinder service, brake bleeding, wheels and hub bearings, fork oil seals, Uni-Trak linkage, swingarm, steering-stem bearings, and bodywork.
• Electrical diagnosis. Test procedures and circuit diagrams cover charging, ignition, and starting, plus lighting, cooling-fan, meter, switch, sensor, relay, diode, and junction-box checks.

Kawasaki wrote these manuals primarily for trained mechanics working in an equipped shop. Owners with basic mechanical knowledge and the proper tools can also use them for routine maintenance and basic repairs.

Carburetor Settings and Model Updates

The base manual covers Keihin CVK32 carburetors and the supplement covers Keihin CVK30 units. The separate fuel-level and synchronization specifications let you check the settings for the installed carburetors when diagnosing an uneven idle. The base manual identifies the 57001-1198 vacuum gauge, and both publications list the 57001-1017 fuel-level gauge.

Chapter 17 groups the EX250-H10, H11, and H12 updates, including revised carburetor and final-drive data, brake component changes, and charging, ignition, and starter circuits. Chapter 18 gives the EX250-H13 general specifications and revised engine-oil requirements. Market notes identify U.S. and California, Canadian, Australian, and European configurations, including Austrian, Finnish, Greek, Swiss, Italian, and Dutch applications where specified.

Engine Wear Checks and Assembly Notes

The top-end procedures include camshaft oil-clearance and cylinder-head warp checks, piston-ring groove and end-gap measurement, and cylinder boring and honing. The crankshaft and gearbox sections cover connecting-rod bend and twist, bearing inserts and journals, crankshaft runout and side clearance, balancer wear, gear backlash, and shift-fork, drum-groove, and gear-dog inspection.

The camshaft caps are machined with the cylinder head. Installing a cap in the wrong position can alter oil clearance and seize the camshaft. Misaligning the clutch spring plate can cause clutch drag or slipping.

Wiring, Oil Flow, and Workshop Tools

Illustrations include the Engine Oil Flow Chart, the EX250-H1/H2/H3/H4 wiring diagram, the Australian EX250-H5/H7 and European EX250-H5 diagrams, and the separate European and Canadian diagrams in Chapter 17. Exploded views show component layout and identify fasteners that require specified torque, sealant, or locking agent.

The base manual identifies the 57001-164 oil-pressure gauge and 57001-1188 adapter, the 57001-1219 front-fork oil-seal driver, and the 57001-983 electrical hand tester. Fuel-system work involves flammable gasoline, and cooling-system work can expose hot, pressurized coolant. Brake and electrical work require appropriate fluid handling, circuit isolation, and test equipment.

Sample Radiator Cap, Valve, and Clutch Specs

For the EX250-E1/E2, the base manual lists a radiator cap relief pressure of 93–123 kPa (14–18 psi) for the cap pressure test. The cold valve-clearance specifications are 0.08–0.13 mm for the intake valves and 0.11–0.16 mm for the exhaust valves.

For clutch inspection on the EX250-E1/E2, the standard friction plate thickness is 2.9–3.1 mm, with a service limit of 2.8 mm.