2007-2012 Honda TRX420 FourTrax Rancher TRX420TM/TE/FM/FE/FPM/FPE Service Manual
Honda Models Covered & Key Technical Specifications
Models: Honda TRX420TM, Honda TRX420TE, Honda TRX420FM, Honda TRX420FE, Honda TRX420FPM, Honda TRX420FPE
Sub-models / Variants: 2WD, 4WD, Left foot operated gearshift, Electric shift program (ESP), Electric Power Steering (EPS)
Trade Names: FourTrax Rancher
Model Years: 2007–2012
Serial Numbers: Engine serial number stamped on the left side of the rear crankcase
Technical Data:
-
Engine type: Single cylinder, longitudinally installed OHV
-
Displacement: 420 cm³ (25.6 cu-in)
-
Bore and stroke: 86.5 x 71.5 mm (3.41 x 2.81 in)
-
Compression ratio: 9.8:1 (07–08) / 9.9:1 (After 08)
-
Lubrication system: Forced pressure and wet sump
-
Cooling system: Liquid cooled
-
Fuel system: PGM-FI (Programmed Fuel Injection)
-
Transmission: Constant mesh, 5-speeds with reverse
-
Clutch system: Centrifugal and multi-plate, wet
-
Starter system: Electric starter motor
Honda Manual Features & Content Preview
- Includes 28 detailed torque specification tables and comprehensive electrical wiring routing diagrams.
Equip your workshop with the comprehensive factory data required to service the 2007–2012 Honda TRX420 FourTrax Rancher series. Whether you are tackling routine maintenance or a complete engine overhaul, having exact specifications at your fingertips reduces bench time and prevents costly guesswork.
This official 594-page OEM reference covers all TM, TE, FM, FE, FPM, and FPE configurations across 2WD/4WD variants. It serves as the primary factory documentation for the critical transition to PGM-FI fuel injection and the integration of ESP and EPS systems.
System Documentation & Diagnostic Value
Inside, you will find exhaustive mechanical data designed to streamline your diagnostic workflow. The chapters break down everything from cylinder head and piston assembly to transmission maintenance and final drive backlash settings. Need to verify worn parts? Every section provides crisp assembly illustrations, component identification codes, and precise inspection procedures mapped against factory service limits. For 420cc OHV engine, PGM-FI fuel injection, and 5-speed transmission
While this manual delivers complete structural and electrical data, complex diagnostic work should always be verified by a certified technician to ensure safe vehicle operation prior to returning the ATV to the trail.
Technical Specification Highlights
Detailed reference values allow for professional assessment without searching through multiple sources. Key data points include:
- Fuel System: Idle pressure is rated at 336–350 kPa (49–51 psi).
- Fluid Capacities: Coolant system holds 1.5 liters; engine/transmission requires 2.7–2.8 liters of SAE 10W-30.
- Engine Timing: Intake valves specified at 6° BTDC (07–08) or 7° BTDC (After 08) at 1 mm lift.
- Ignition: Spark plug gap set precisely at 1.0–1.1 mm.
Customer Reviews
Read what our customers say about this Honda ATV manual and share your own experience.