2001–2009 Suzuki DR-Z250 Service Manual (P/N 99500-42157-01E)

• 285-page PDF - 284 pages of Suzuki factory service-manual material plus one appended aftermarket parts-catalog link sheet. The Suzuki publication is the 8th Edition, January 2009, Part No. 99500-42157-01E.
• Covers the listed DR-Z250K1, K2, K3, K4, K5, K6, K7, and K9 editions and the E-03, E-24, E-28, and E-33 market configurations; the publication contains no K8 model chapter.
• Documents engine removal and installation, full disassembly and reassembly of the air-cooled single-cylinder DOHC engine, cylinder-head service, valve-shim selection, cam timing, automatic decompression, piston and crankshaft inspection, balancer service, and crankcase-bearing replacement.
• Separates MIKUNI TM28SS and MIKUNI BSR32/BSR32SS carburetor construction, disassembly, cleaning, inspection, float-setting, and remounting procedures, with fuel-system checks and an engine lubrication-system chart.
• Covers clutch and six-speed transmission repair, gearshift-shaft and fork inspection, countershaft/driveshaft assembly, front-fork service and suspension setup, steering and swingarm bearings, wheel service, and front/rear brake hydraulic repair and bleeding.
• Provides charging, starter, CDI ignition, battery, relay, switch, and side-stand interlock troubleshooting; wiring and routing diagrams; an hour-based base maintenance schedule plus E-24 road-model intervals; special-tool listings; torque tables; capacities; service limits; and electrical test specifications.

Suzuki states that this manual is written for people with sufficient motorcycle-service knowledge, skills, and tools, including the specified special tools. It is therefore suited to professional technicians and experienced owners already equipped for advanced engine and chassis repair, not readers looking for a basic mechanical primer.

Model and Market Coverage

The core K1 chapters establish the inspection, maintenance, repair, and overhaul procedures used throughout the publication. Later model chapters supply changed specifications, service data, or procedures and refer back to that base material. Market codes identify E-03 as the United States except California, E-24 as Australia, E-28 as Canada, and E-33 as California.

The addenda also provide useful frame-number breaks. K5 coverage begins at JS1DJ43A52100001 for the listed markets. K6 starts at JS1DJ43A62100001 for E-24, E-28, and E-33. For K7, the Australian E-24 model changes to JS1SJ45A000503020, while E-28 and E-33 begin at JS1DJ43A72100001. The K9 update is Australian E-24 only, beginning at JS1SJ45A000504349. Its chapter is a specification update rather than a stand-alone repair section, so the earlier chapters remain part of the repair workflow.

The regional differences go beyond labels. E-33 models use the BSR32-family carburetor where the relevant E-03, E-24, and E-28 versions use the TM28SS family. The E-24 material adds its own maintenance schedule, side-stand/ignition interlock diagnosis, switches, electronic speedometer coverage, wiring diagram, and cable/hose routing for the road-equipped configuration.

Workshop Procedures and Technical References

Engine coverage reaches well past routine tune-ups. The manual addresses cylinder-head and valve-seat service, cylinder and piston measurement, connecting-rod and crankshaft inspection, clutch-pack service, starter clutch and generator work, oil-pump installation, and complete transmission reassembly. Its transmission cross-sectional view is used to establish the correct order and orientation of gears, washers, bushings, and circlips.

The special-tool section identifies factory equipment by number, including the crankcase separator/crankshaft remover 09920-13120, crankshaft installer 09910-32812, valve-seat cutter set 09916-21111, front-fork inner-rod holder 09940-52841, and fork oil-level gauge 09943-74111. These references are tied to the related removal, inspection, installation, and adjustment procedures rather than presented as a generic tool list.

Useful visual references include the engine lubrication-system chart, TM28/BSR32 carburetor construction views, the transmission cross-sectional view, complete wiring diagrams, the electrical-component location view, and dedicated wire, cable, carburetor-vent, and brake-hose routing sheets. Troubleshooting charts trace engine starting and running faults, carburetor complaints, charging failures, starter faults, and no-spark conditions before component replacement.

The maintenance material distinguishes the hour-based schedule used by the base configurations from the E-24 schedule expressed in distance and time. Related chapters cover valve-clearance inspection and shim replacement, compression and oil-pressure testing, brake-fluid service, drive-chain care, suspension checks, and chassis fastener inspection, backed by component-specific torque data, wear limits, capacities, clearances, and electrical test values.

The manual warns that the camshaft journal holders are position-specific and must be drawn down evenly; incorrect installation can damage the cylinder head or holder thrust surfaces. It also identifies incompatible brake-fluid mixing as a cause of serious brake-system damage. Follow the factory safety precautions when working around gasoline, hot engine components, electrical tests on a running engine, or opened brake circuits.