Honda CR250R 1992–1996 OEM Service Manual

Honda factory service manual for the 1992–1996 liquid-cooled, two-stroke CR250R, with separate references for ’92, ’93, “After ’92,” and “After ’93” configurations. The separately referenced Honda Common Service Manual (P/N 61CM000) is optional background material and is not required for the procedures here.

OCR Search and Chapter Bookmarks

Navigation and diagram detail: OCR text search is available in the workshop chapters, although recognition errors can affect individual words and numbers. Embedded bookmarks link to the contents and all 18 chapters. Small wire-color codes in the ignition wiring diagram are readable when enlarged.

One printable English-language PDF with 244 pages: 228 pages of workshop content and index, four opening pages, and 12 memo pages. The opening pages include the cover, safety notice, introduction/contents, and symbols guide.

Engine, RC Valve and Chassis Service

The following selected service topics outline the repair coverage; further contents include the competition maintenance schedule and silencer glass-wool replacement.

• Engine and RC Valve: Engine removal/installation, top-end repair, exhaust-valve decarbonizing and linkage adjustment, crankcase separation, and crankshaft bearing replacement.

• Clutch and transmission: Clutch and kickstarter service, gearshift-linkage repair, transmission inspection, and mainshaft/countershaft disassembly and reassembly.

• Fuel and cooling: Carburetor teardown and jetting adjustment, reed-valve service, coolant replacement and bleeding, radiator service, and water-pump repair.

• Suspension and steering: Fork overhaul and oil-level setup, steering-stem bearing service, rear-shock disassembly and nitrogen charging, Pro-Link linkage repair, and swingarm service.

• Wheels and brakes: Front/rear wheel disassembly, bearing replacement, rim and spoke inspection, brake-fluid replacement/bleeding, pad replacement, and master-cylinder/caliper overhaul.

• Ignition diagnosis: Ignition-control-module connector checks, ignition/alternator testing, stator and flywheel service, ignition-timing verification, and a complete wiring diagram.

• Workshop references: Year-specific cable and harness routing, exploded assembly drawings, troubleshooting charts, special-tool numbers, general and component torque tables, service limits, clearances, lubrication data, and adjustment specifications.

This manual suits mechanics with established workshop skills and the equipment needed for internal engine and suspension service.

Year-Specific Parts and Service Data

The PJ28E (’92), PJ28G (’93), and PJ28H (“After ’93”) carburetor identifiers accompany revisions to clutch, ignition, chassis, wheel, and suspension arrangements. These distinctions help match the applicable parts layouts and specifications before work begins.

The opening section supplies model-identification locations, service rules, lubrication and seal-point charts, and optional carburetor, sprocket, seat, fork-spring, and shock-spring information.

Top-End and Bottom-End Repair

Cylinder-head, cylinder, piston, ring, pin, and connecting-rod small-end inspections have related wear data, including cylinder-to-piston clearances and ring end-gap limits.

Step-by-step procedures cover crankshaft removal/installation and crankcase reassembly. Transmission assembly drawings show shift-fork orientation, with wear data for the clutch, crankshaft, gears, bushings, shafts, and shift forks.

The manual distinguishes in-frame service from crankshaft, shift-fork, and shift-drum work that requires engine removal. RC Valve operating and exploded views support sub-exhaust and flap-valve service, valve-shaft inspection, and work on the governor, rack, and pinion.

Rotating the cylinder over the piston can snag and break a ring at a cylinder port; a bent sub-exhaust-valve shaft or incorrectly aligned RC Valve linkage can prevent valve operation.

Carburetor Tuning and Water-Pump Repair

Fuel and premix specifications accompany minor idle adjustments and altitude/temperature correction-factor tuning. The Jet Needle/Air Screw Chart and special-condition guidance address track and weather changes. Float-level inspection and air-cleaner-housing service accompany the carburetor procedures.

Water-pump coverage includes shaft inspection and bearing, oil-seal, and mechanical water-seal replacement.

Suspension Internals and Brake Components

Fork component views support internal inspection and assembly. The cap-removal cautions explain how an incorrect damper-adjuster position can damage the adjuster needle and impair rebound damping.

Rear-shock coverage extends to spring service, bladder and seal inspection, oil filling and air bleeding, and spherical-bearing replacement. Linkage and swingarm sections distinguish later bearing arrangements. Detailed rider-specific preload and damping setup is referred to the separate Owner’s Manual.

Brake procedures also cover hose installation and rear-pedal service. Inspection tables include wheel, fork, shock, disc, master-cylinder, caliper, and piston limits.

Ignition Fault-Finding and Workshop Tools

The no-spark flowchart works with connector-terminal tables and individual ignition-coil, exciter-coil, and pulse-generator tests to isolate faults before replacing the ignition control module. Year-specific resistance and timing specifications accompany the tests. Cable & Harness Routing layouts and the ignition wiring diagram support circuit tracing.

Troubleshooting charts address hard starting, low- and high-speed performance, overheating, power loss, and poor handling. A suspension-adjustment chart links track-handling complaints to setup checks.

Honda tool references include crankcase pullers 07937-4300000 / 07937-4300001, water-seal driver 07945-KA30000, fork oil-seal driver 07KMD-KZ30100, and flywheel puller 07733-0010000.

Fuel-system work, pressurized cooling service, hydraulic brake repair, and the nitrogen-charged shock absorber require the correct tools and workshop experience. Follow Honda’s cautions and pressure-release instructions before disassembly.

Brake Wear and Ignition Data Preview

The brake tables list front-disc thickness at 3.0 mm standard and 2.5 mm service limit. The rear disc is specified at 4.5 mm standard, with a 4.0 mm service limit.

Ignition-coil primary resistance is specified at 20°C (68°F): 0.4–0.6 Ω for ’92 and 0.2–0.4 Ω for “After ’92,” alongside the component-testing procedures.