2005–2007 Suzuki RMZ450 Motocross Service & Repair Manual

This Suzuki RMZ450 service manual covers maintenance, troubleshooting, machine tuning, and mechanical repair for the 2005–2007 motocross models. Its repair chapters extend from engine removal and internal inspection to suspension and brake servicing.

PDF Search, Chapter Bookmarks and Page Contents

Search and diagram access: Text search is limited to the added title page. Bookmarks link to the technical chapters, while the Foreword entry has no active destination. Small wire-color labels on the checked electrical diagrams remain legible when enlarged.

Supplied as one printable, English-language 308-page PDF, including 297 distinct manual pages, one added title page, and ten repeated pages from the fuel and cooling sections.

Engine Rebuilds, Chassis Service and Race Setup

These are selected repair and tuning topics. Additional material includes exhaust-silencer repacking and a setting-data worksheet for recording track conditions and setup changes.

• Engine repair: Engine removal and installation, cylinder-head servicing, piston replacement, automatic decompressor inspection, camshaft timing, and tappet-shim selection.

• Clutch and transmission: Clutch-plate inspection, release-bearing replacement, kick-starter servicing, gearshift-linkage repair, crankcase separation, and transmission and crankshaft inspection.

• Fuel system: Carburetor disassembly and cleaning, float and fuel-level checks, accelerator-pump timing, throttle-position-sensor testing, and jetting adjustments.

• Lubrication and cooling: Oil-pressure testing, oil-pump inspection and reassembly, strainer checks, cooling-system leak testing, radiator-cap testing, and water-pump servicing.

• Suspension and steering: Fork disassembly, seal and bushing replacement, rear-shock servicing, suspension-linkage bearing replacement, steering-bearing work, and chassis balancing.

• Brakes and wheels: Brake bleeding, pad replacement, caliper and master-cylinder servicing, disc inspection, wheel-bearing replacement, and axle and rim checks.

• Electrical diagnosis: Ignition peak-voltage tests, ignition-coil and stator-coil resistance checks, CDI reference measurements, magneto servicing, and wiring diagrams.

Suited to experienced mechanics and owners comfortable with engine disassembly and precision measurement. Internal repairs require the specified service tools; rear-shock work also calls for pressure-control and charging equipment.

Valve Gear and Bottom-End Repair

Step-by-step procedures cover cylinder-head disassembly, valve-guide and seat servicing, piston-ring installation, and cam-chain timing. The Tappet Shim Selection Tables support valve-clearance adjustment, while separate inspection criteria address camshaft journals, piston fit, and connecting-rod condition.

The valve-seat section warns that lapping the titanium valves can remove their wear-resistant surface treatment.

For bottom-end work, the manual identifies crankcase separating tool 09920-13120 and documents transmission-shaft removal, gear-dog inspection, bearing replacement, and crankcase reassembly. Keeping the required tools, inspection criteria, and assembly references together helps plan a rebuild before opening the engine.

The Engine Lubrication System Chart traces oil delivery through the engine and complements the pump and strainer procedures.

Carburetor Tuning and Ignition Fault Finding

The tuning chapter explains slow, intermediate, and main metering systems, then relates jetting choices to temperature, altitude, and mixture symptoms. The fuel-system chapter adds component inspection and throttle-position-sensor checks.

Electrical Circuit and Wiring Diagram drawings show connections between the CDI unit, magneto, ignition coil, engine-stop switch, and throttle-position sensor. Cable Routing and Carburetor Hose and Water Hose Routing drawings help identify the intended layout during reassembly.

Fork, Shock and Brake Workshop Coverage

Fork instructions distinguish