Suzuki GS250FWS / GSX250F / GSX-R250 Manual Set, 1985–1990 (P/N 99500-32040-01E)

The English service books describe separate platforms; their specifications and procedures are not interchangeable. Within the Japanese guide, the CJ and CK supplements document changes to the preceding version and are used with its underlying service information.

Language and coverage: The GJ72A workshop instructions are in Japanese. The English owner's manual covers operation and routine maintenance rather than internal engine overhaul, and the independent supplementary sheets do not replace Suzuki's model-specific repair procedures.

PDF Search, Bookmarks, and Diagram Detail

Search and navigation: Text search is unavailable in the four main manuals and the three single-page diagram/specification files. The Danish air-cleaner notes contain searchable text; the general notes are partly searchable. The GSX250F and owner's manuals have topic bookmarks, the Japanese guide has broad section bookmarks, and the GS250FWS file has page bookmarks labeled with image filenames. Small wiring labels require zooming and, on some pages, rotation.

The ZIP contains 9 printable PDFs totaling 532 pages. The six supplementary pages listed above and the Japanese guide's blank final page are already included in that total.

Engine Overhaul, Electrical Tests, and Chassis Service

This is a selection of the documented work, rather than a complete contents list. Further topics include fairing removal and battery servicing.

• Engine repair: Step-by-step removal, disassembly, inspection, and reassembly procedures, including valve timing, tappet shims, pistons, rings, crankshaft bearings, and connecting rods.

• Clutch and transmission: Clutch inspection, internal gearbox work, gearshift-fork checks, shaft assembly, and related clearance and wear-limit tables.

• Fuel and lubrication: BSW24SS and BSW27 carburetor servicing and synchronization, fuel-cock checks, GSX250F fuel-pump and relay tests, and oil-pressure diagnosis.

• Cooling system: Radiator and cap inspection, thermostat and cooling-fan switch tests, coolant servicing, and GSX250F water-pump disassembly and seal inspection.

• Electrical diagnosis: Ignition, charging, starter, switch, and meter tests, plus GSX250F side-stand interlock and front/rear solenoid-control checks.

• Brakes and chassis: Brake inspection and bleeding, wheel and tire service, fork and steering-stem work, swingarm bearings, suspension linkage, and rear-shock inspection.

Suzuki prepared the English service manuals primarily for experienced mechanics, while also identifying apprentice and do-it-yourself mechanics as users; internal repair work requires precision measuring equipment and the specified service tools.

Engine Inspection and Reassembly

The engine sections connect teardown instructions with component measurements, bearing-selection tables, and reassembly checks. This allows inspection results to guide bearing and component selection before the engine is rebuilt.

Platform differences: The GS250FWS material describes its BSW24SS carburetors, anti-dive fork, remotely adjustable Full-Floater suspension, and front-disc/rear-drum brakes. The GSX250F book uses BSW27 carburetors and covers hydraulic calipers and master cylinders at both wheels.

The GS250FWS crankcase instructions warn that excessive sealant can obstruct a bearing or oil passage. The GSX250F valve-guide section identifies guide or cylinder-head damage as a consequence of incorrect installation preparation.

Later Models and Diagnostic Equipment

GSX250F supplements: The FN section adds changed specifications, service data, a wiring diagram, and revised routing illustrations to the FM base manual. The FP and FR sections provide specifications and service data; they are not separate, self-contained overhaul manuals.

Symptom/cause/remedy tables address engine, carburetion, clutch, transmission, charging, battery, chassis, and brake faults. The ignitor test calls for Suzuki checker 09931-94430 and adapter 09931-94460.

Other specified equipment includes carburetor balancer 09913-13121, fork oil-seal installer 09940-50113, and swingarm bearing remover 09923-73210. These tool references make the required workshop equipment visible before a job is started.

Wiring, Routing, and GJ72A Changes

Illustrated references include engine disassembly/reassembly charts, transmission exploded views, the lubrication-system diagram, the side-stand/ignition interlock circuit, model-specific wiring diagrams, and wire, cable, and hose routing views. The GS250FWS material also shows spring-adjuster hose routing.

The Japanese guide combines photo-led repair instructions with tool charts and service tables. Its CJ supplement documents the move from a side-stand warning lamp to an interlock system; the CK supplement records further equipment changes and provides revised electrical information.

Fuel-system work, hot cooling-system components, and hydraulic brakes require suitable protective equipment, ventilation, fire-safe handling, and the prescribed final checks.

A Preview of Tappet and Compression Specifications

For the GS250FWS, the tappet-shim section specifies a cold tappet clearance of 0.10–0.20 mm and provides a shim-size chart for adjustment.

Its compression-inspection section lists a standard pressure of 11–15 kg/cm², a service limit of 9 kg/cm², and an allowable cylinder-to-cylinder difference of 2 kg/cm². The test description specifies an engine run beforehand, normal tappet clearance, and a fully open throttle during cranking.