2004–2006 Honda TRX350TE/TM/FE/FM FourTrax Rancher ATV Service Manual (P/N 61HN452)

This Honda service manual (P/N 61HN452) covers the 2004–2006 TRX350TE, TRX350TM, TRX350FE, and TRX350FM FourTrax Rancher. It documents foot-operated gearshift and Electric Shift Program (ESP) configurations, with dedicated front driveline procedures for the 4WD models.

• Engine repair: Engine removal and installation, cylinder-head overhaul, valve-guide replacement, valve-seat refacing, cylinder/piston inspection, and camshaft timing procedures.

• Clutch and transmission: Centrifugal and change-clutch repair, gearshift-linkage inspection, crankcase separation, transmission assembly, and shift-drum and shift-fork inspection.

• Fuel system: VE94EA carburetor disassembly and assembly, diaphragm and float inspection, pilot-screw adjustment, high-altitude settings, and fuel-strainer cleaning.

• Lubrication system: Dry-sump system explanations, oil-pump disassembly and clearance checks, oil-cooler service, and cooling-fan removal and assembly.

• Driveline overhaul: A.P. Suretrac front differential service for FM/FE models, rear final-drive repair, bearing replacement, backlash measurement, and gear-contact adjustment.

• Brakes and chassis: Front hydraulic brake bleeding, master- and wheel-cylinder service, rear drum-brake repair, steering-shaft inspection, suspension-arm service, and swingarm-bearing replacement.

• Electrical diagnosis: Charging and ignition tests, starter-motor overhaul, ESP problem-code troubleshooting, angle-sensor checks, and model-specific wiring diagrams.

Suited to technicians and mechanically qualified owners with the specified tools and test equipment; the maintenance schedules also identify work recommended for Honda dealers.

Engine Repair and Workshop Planning

Step-by-step procedures cover internal engine inspection and assembly, including piston-ring installation, crankshaft checks, and balancer alignment. The service sections distinguish work that can be performed in the frame from jobs requiring engine removal. Cylinder/piston service can be performed in the frame; camshaft and internal transmission work require engine removal.

The related torque tables, wear limits, and troubleshooting charts support repair planning across these assemblies. Cylinder-head cap-nut and spark-plug torque specifications are included alongside component-specific assembly information.

Carburetor and Dry-Sump Service

Carburetor coverage extends to the starting-enrichment valve, air cut-off valve, primer diaphragm, vacuum piston, and jets. Float-level inspection identifies the specified gauge, 07401-0010000, and explains when the float assembly requires replacement rather than adjustment.

The lubrication sections explain the integral crankcase oil tank and separate feed and scavenge circuits. The Oil Management System Drawing and Lubrication System Diagram show how oil circulates, while the level-check instructions account for oil draining back during storage.

The oil-filter installation warning identifies a specific repair risk: installing the filter backward can cause severe engine damage.

Differential, Final Drive, and Chassis Work

The FM/FE front differential procedures include face-cam and cam-follower inspection, limited-slip torque testing, and shim selection. Gear tooth contact-pattern illustrations accompany the backlash and bearing checks for both the front differential and rear final drive.

Front drive-shaft coverage distinguishes boot replacement and inboard-joint service from the outboard joint, which cannot be disassembled; a worn or damaged outboard joint requires drive-shaft replacement. The pinion-bearing lock-nut procedures address unstaking precautions that protect the case threads and bearings.

Chassis instructions cover steering-shaft bearings and tie-rods, front suspension arms, rear shock absorbers, and swingarm pivots. Brake procedures distinguish the front hydraulic drums from the mechanically operated rear drum. Body-panel, carrier, and exhaust-system removal instructions support access for these jobs.

Follow the manual’s safety and handling guidance before engine removal or brake service.

ESP Troubleshooting and Electrical References

The ESP diagnostic sequence helps distinguish mechanical shift trouble from switch, sensor, wiring, or ECU faults before selecting a repair. It includes gear-position indicator checks, problem-code diagnosis, angle-sensor resistance and voltage tests, and control-motor and reduction-gear service. The angle-sensor test specifies ECU test harness 07YMZ-0010100.

Ignition pulse-generator peak-voltage checks, alternator-stator tests, and charging-system troubleshooting address separate starting and running faults.

Visual references include cable and harness routing drawings, connector terminal assignments, charging-system and ESP system diagrams, and emission-control information-label views. Separate wiring diagrams cover U.S. TM, U.S. FM, U.S./Canada/world TE/FE, and Canada/world TM/FM configurations.

A Preview of Valve-Clearance and Oil-Capacity Data

The valve-clearance procedure specifies 0.15 ± 0.02 mm for both intake and exhaust, checked with the engine cold, below 35°C/95°F.

Engine-oil capacity after draining and filter replacement is 2.0 liters. For FM/FE models, the front differential capacity after disassembly is 275 cm³; the maintenance section distinguishes this from a routine drain refill.

PDF Search, Bookmarks, and Wiring Detail

Search and diagram navigation: OCR text search is available, but recognition errors can miss words, particularly in tables and wiring diagrams. Embedded bookmarks cover the chapters and individual wiring diagrams. Small wiring labels require zooming, and some densely grouped labels remain soft at higher magnification.

Supplied as one printable English PDF with 442 pages, including the cover and 11 memo pages already counted in the total. The manual has 25 numbered sections, including the index.