2009–2013 Honda CRF450R Service Manual PDF

This service manual covers the 2009–2013 Honda CRF450R, including engine, chassis, electrical, and Programmed Fuel Injection (PGM-FI) service procedures.

PDF Search, Chapter Bookmarks and Wiring Detail

Search and diagram access: Most of the manual has searchable OCR text, but PDF pages 15, 22, and 248 have no searchable text. Embedded bookmarks provide chapter navigation and separate links to the wiring diagrams. Small connector-pin numbers and wire-color labels require zooming.

The download contains one printable, English-language, 524-page PDF, including the cover and 19 memo pages already counted in that total.

Engine Teardown, PGM-FI Diagnosis and Suspension Service

The selected topics below are part of a wider reference that also includes muffler packing replacement procedures and optional suspension-spring tables.

• Engine repair: Step-by-step procedures for engine removal, cylinder-head disassembly, valve-clearance shimming, camshaft installation, and cylinder and piston inspection.

• Transmission and clutch: Crankcase separation, crankshaft and transmission inspection, balancer service, clutch repair, and kickstarter and gearshift-linkage disassembly.

• PGM-FI troubleshooting: DTC diagnosis, MIL circuit inspection, fuel-pressure and flow testing, fuel-pump service, and injector and sensor checks.

• Suspension and steering: Fork disassembly and assembly, PSF air-fork service, rear-shock overhaul, linkage-bearing replacement, and Honda Progressive Steering Damper (HPSD) service.

• Wheels and hydraulic brakes: Wheel-bearing replacement, brake-pad and disc inspection, master-cylinder and caliper rebuilding, fluid replacement, and air bleeding.

• Electrical diagnosis: Ignition and CKP-sensor tests, alternator and regulator/rectifier checks, ECM connector views, and wiring diagrams for the documented configurations.

Written for qualified professional technicians, the manual assumes shop-safety training and access to the specified tools and test equipment.

Engine, Valvetrain and Transmission Repair

The engine sections pair teardown procedures with inspection limits, assembly illustrations, and component-specific torque data. Valve service extends to rocker-arm inspection, decompressor service, valve-guide replacement, and valve-seat refacing.

Planning the work: The manual distinguishes work that can be performed with the engine installed from crankshaft and transmission service requiring engine removal and crankcase separation. That distinction helps a workshop determine the teardown scope before starting a repair.

The intake valves are titanium with a thin oxide coating; lapping damages that coating. The manual treats intake- and exhaust-valve seat work separately.

Transmission coverage includes gear dogs, bushings, shafts, shift forks, and the shift drum. Exploded assembly views show washer and gear placement, while the clutch section distinguishes the documented disc, spring, and judder-spring arrangements.

PGM-FI Fault Tracing and Electrical Tests

The technical-feature section explains the battery-less PGM-FI kickstarting system and the MIL incorporated into the engine stop switch. Diagnostic coverage includes current and stored faults, HDS pocket-tester use, MIL blink-code retrieval, and circuit-specific troubleshooting.

The DTC index connects fault indications with the relevant tests. MAP-sensor procedures, for example, distinguish supply-voltage, open-circuit, short-circuit, and sensor checks rather than treating a fault code as proof that a sensor needs replacement.

ECM connector pinouts, cable and harness routing diagrams, and electrical reference values support fault tracing. The tool references identify the test probe, 07ZAJ-RDJA110, alongside the battery harnesses and fuel-pressure test equipment.

The white-painted throttle-body fasteners have a specific caution: disturbing them can cause throttle-valve and idle-control failure.

Forks, Rear Suspension and Hydraulic Brakes

Fork procedures distinguish the earlier spring-equipped assemblies from the PSF pneumatic-spring fork used after '12. Coverage includes seals and bushings, damper bleeding, oil-capacity adjustment, and PSF air-leak testing.

Rear-suspension work extends to shock-bladder replacement, damper disassembly, nitrogen charging, swingarm bearings, and shock linkage. HPSD procedures include internal inspection, assembly, and bleeding.

The hydraulic-brake section covers both master cylinders and calipers, with piston and bore inspection criteria and procedures for restoring the hydraulic circuit after service.

Maintenance, Lubrication and Cooling

Maintenance schedules account for riding conditions and identify frequently replaced components. Frame, body-panel, subframe, and exhaust removal procedures support access to the service areas.

The lubrication-system diagram accompanies oil-pump, strainer, pressure-relief-valve, and one-way-valve service. Cooling coverage includes radiator-cap and system pressure tests, the coolant gravity chart, coolant replacement and bleeding, and water-pump bearing and mechanical-seal replacement.

Fuel-system and internal engine work require proper tools and a well-ventilated workspace; follow the manual’s fuel-handling and service precautions.

Selected Valve-Clearance and Transmission-Oil Specifications

Intake-valve clearance is specified at 0.16 ± 0.03 mm with the engine cold, below 35°C/95°F. The adjustment section includes shim selection and clearance rechecking.

For a transmission-oil change after draining, the specified capacity is 0.59 liter for 2009–2012 and 0.64 liter after '12. Separate capacities are provided for disassembly, distinguishing routine oil changes from internal repair work.