1992–1996 Honda CR250R OEM Service Manual (P/N 61CM000)

• Honda factory service manual for 1992–1996 liquid-cooled two-stroke CR250R models, supplied as a 244-page PDF with separate references for ’92, ’93, and later “After ’93” configurations.
• Covers engine removal, cylinder-head/cylinder/piston repair, RC Valve decarbonizing and linkage adjustment, clutch and kickstarter service, crankcase separation, crankshaft bearing replacement, and transmission disassembly/reassembly.
• Details carburetor teardown and jetting adjustment, water-pump and cooling-system repair, brake fluid replacement and bleeding, master-cylinder and caliper overhaul, and ignition/alternator testing.
• Includes fork overhaul and oil-level setup, steering-stem bearing service, rear shock disassembly and nitrogen charging, Pro-Link shock-linkage repair, swingarm service, and wheel-bearing replacement.
• Provides year-specific cable and harness routing, a complete wiring diagram, exploded assembly drawings, troubleshooting charts, special-tool numbers, torque tables, service limits, clearances, lubrication data, and adjustment specifications.

Factory Engine and Chassis Specifications

This is the CR250R-specific Honda workshop publication, not a generic maintenance guide. The opening section supplies model-identification locations, service rules, general and component torque data, special-tool lists, lubrication and seal-point charts, cable and harness routing, and optional carburetor, sprocket, seat, fork-spring, and shock-spring information. Within the 1992–1996 coverage, the manual calls out revisions as ’92, ’93, “After ’92,” and “After ’93.” It identifies the PJ28E, PJ28G, and PJ28H carburetor groups and separates later clutch, ignition, chassis, wheel, and suspension arrangements before parts or specifications are selected.

Engine coverage starts with frame access and complete engine removal/installation, then moves into cylinder-head, cylinder, piston, ring, pin, and connecting-rod small-end inspection. The RC Valve chapter goes well beyond a parts view: it covers operating checks, carbon removal, sub-exhaust and flap-valve service, valve-shaft inspection, linkage disassembly and adjustment, plus the governor, rack, and pinion components. Clutch, kickstarter, and gearshift-linkage repair are handled separately from the bottom end. For a full overhaul, the crankcase chapter covers case separation, crankshaft removal and bearing replacement, transmission inspection, mainshaft/countershaft assembly, shift-fork orientation, crankshaft installation, and crankcase reassembly.

Chassis sections cover front and rear wheel disassembly, bearing replacement, rim and spoke inspection, fork removal and complete internal service, handlebar controls, and steering-stem bearings. Rear suspension coverage includes shock removal, spring service, damper disassembly, bladder and seal inspection, oil filling and air bleeding, nitrogen charging, spherical-bearing replacement, Pro-Link shock-linkage repair, and swingarm bearing service. Brake work includes fluid replacement and air bleeding, pad replacement, front and rear master cylinders, both calipers, hose installation, and rear pedal service.

Reference Data and Clearances

The fuel-system chapter includes fuel and premix specifications, minor idle adjustments, major altitude/temperature correction-factor tuning, the Jet Needle/Air Screw Chart, special-condition tuning for track and weather changes, carburetor removal/disassembly/assembly, float-level inspection, reed-valve service, and air-cleaner-housing service. Cooling-system coverage includes coolant replacement and bleeding, radiator service, and water-pump shaft, bearing, oil-seal, and mechanical water-seal replacement. Electrical diagnosis includes a no-spark flowchart, ignition-control-module connector checks, ignition-coil, exciter-coil, and pulse-generator testing, stator and flywheel service, ignition-timing verification, and the complete wiring diagram.

Reference material extends beyond fastener torque. The tables cover cylinder-to-piston clearance and ring end-gap limits; clutch, crankshaft, gear, bushing, shaft, and shift-fork wear data; wheel, fork, shock, and brake inspection limits; and ignition resistance and timing specifications. Visual references include the year-specific Cable & Harness Routing layouts, carburetor correction-factor graph and Jet Needle/Air Screw Chart, RC Valve operating and exploded views, crankcase/transmission assembly drawings, fork and shock component views, and the ignition-system wiring diagram. The troubleshooting section follows hard starting, low- and high-speed performance, overheating, power loss, and poor handling through system-specific checks, including a suspension-adjustment chart for common track-handling complaints.

Honda tool numbers are listed where dedicated equipment is required, including crankcase puller 07937-4300000/4300001, water-seal driver 07945-KA30000, fork oil-seal driver 07KMD-KZ30100, and flywheel puller 07733-0010000. The Honda Common Service Manual, P/N 61CM000, is identified only as optional background material and is not required for the CR250R procedures in this manual.

Several repair cautions are specific to this engine and chassis. Rotating the cylinder while sliding it over the piston can catch and break a ring at a cylinder port. A bent sub-exhaust-valve shaft or incorrectly aligned RC Valve linkage can prevent the exhaust-control system from operating. The fork chapter also warns that improper damper-adjuster position during cap removal can damage the adjuster needle and impair rebound damping.

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.