1986-1989 Honda TRX350 FourTrax 4×4 & TRX350D Foreman 4×4 Service Manual PDF

Description

1986-1989 Honda TRX350 FourTrax 4×4 & TRX350D Foreman 4×4 Service Manual PDF

The 1986-1989 Honda TRX350 FourTrax 4×4 & TRX350D Foreman 4×4 Service Manual PDF is a 303-page service reference covering the 1986-1987 TRX350 FourTrax 4×4 and the 1987-1989 TRX350D Foreman 4×4. It is organized around complete vehicle service, beginning with general information, lubrication and scheduled maintenance, then moving through the fuel system, engine, transmission, chassis, brakes, four-wheel-drive components and electrical systems. The manual also includes technical-feature explanations, system troubleshooting and wiring diagrams, giving technicians a single reference for both routine maintenance and substantial mechanical repair work.

Most system sections begin with service information and troubleshooting, then continue into removal, inspection, disassembly, measurement, assembly and installation procedures. Throughout the manual, service limits, torque values, special-tool references, routing illustrations and component diagrams are placed alongside the relevant procedures. This makes the Honda TRX350 / TRX350D service manual useful when a job requires more than a general overview and the correct sequence, adjustment or measurement needs to be checked before reassembly.

File Details

• Manual type: Service Manual
• Brand: Honda
• Models: 1986-1987 TRX350 FourTrax 4×4; 1987-1989 TRX350D Foreman 4×4
• Language: English
• Page count: 303 pages
• File format: PDF

Model Coverage and Service Depth

The manual separates model-dependent information where the machines differ. The cover identifies the TRX350 FourTrax 4×4 for 1986-1987 and the TRX350D Foreman 4×4 for 1987-1989, while individual procedures and specification tables use year notes such as ’86, ’87, After ’86 and After ’87 where applicable. Model-identification pages show the locations of the frame serial number, engine serial number and carburetor identification number so the machine and components can be checked before service.

The general specifications describe a 350.4 cc gasoline, air-cooled, four-stroke single-cylinder engine with an overhead camshaft and chain drive. The manual gives service data for the engine, carburetor, clutch, five-speed constant-mesh transmission with reverse, differential and final drive, charging and ignition systems, wheels, suspension, steering and brakes. Rather than presenting specifications in isolation, the procedures connect those values to actual work such as valve-clearance adjustment, cylinder-compression testing, clutch adjustment, carburetor service, piston and cylinder inspection, gear backlash checks and electrical diagnosis.

Chapters Covered

• 1. General Information
  • General safety and service rules
  • Model identification and specifications
  • Torque values, tools, cable and harness routing
• 2. Lubrication
  • Engine oil level and oil/filter change
  • Differential and final-drive oil
  • Lubrication points and troubleshooting
• 3. Maintenance
  • Maintenance schedule, fuel line/filter, throttle and choke
  • Air cleaner, spark plug, breather tube and valve clearance
  • Idle speed, cylinder compression, brakes, clutch, suspension, steering and tires
• 4. Fuel System
  • Fuel tank, fuel pump and air-cleaner case
  • Carburetor removal, disassembly, assembly and installation
  • Pilot-screw and high-altitude adjustment
• 5. Engine Removal/Installation
  • Engine removal and installation procedures
  • Mounting, exhaust, oil-hose and cable/connector handling
• 6. Cooling System
  • Oil cooler and oil hoses
  • Cooling-fan removal, disassembly, assembly and installation
• 7. Cylinder Head/Valves
  • Cylinder-head cover, camshaft and cylinder-head removal
  • Valve-guide replacement and valve-seat inspection/refacing
  • Cylinder-head, camshaft and cover assembly/installation
• 8. Cylinder/Piston
  • Cylinder inspection
  • Piston and piston-ring inspection
  • Piston/cylinder installation and service limits
• 9. Clutch/Oil Pump/Kick Starter
  • Centrifugal clutch and change clutch
  • Clutch lifter and reverse-lock mechanisms
  • Oil pump, primary drive gear, kick starter and oil-filter screen
• 10. Alternator/Starter Clutch/Gearshift Linkage
  • Starter reduction gear and alternator
  • Starter clutch and gearshift linkage
  • Left crankcase cover removal and installation
• 11. Crankcase/Crankshaft/Transmission
  • Crankcase separation and assembly
  • Crankshaft/balancer and transmission service
  • Output-gear backlash, bearing and shim procedures
• 12. Front Wheel/Suspension/Steering
  • Handlebar, throttle housing, front wheel and tires
  • Tie rods, knuckle/knuckle holder and drive shaft
  • Front shock absorber, swingarm and steering stem
• 13. Brakes
  • Front brake and brake shoe/wheel-cylinder/adjuster assembly
  • Master cylinder, rear brake and rear brake pedal
• 14. Rear Wheel/Suspension
  • Rear wheel and axle/wheel bearings
  • Rear shock absorber and swingarm
• 15. Front Differential/Final Drive
  • Front differential and pinion-gear removal/installation
  • Case bearing and oil-seal replacement
  • Final-drive removal, disassembly, assembly and installation
• 16. Bumpers, Fenders, Carriers
  • Front/rear bumpers and front/rear fenders
  • Front/rear carriers for Foreman
• 17. Ignition System
  • CDI system inspection, ignition coil and pulse generator
  • Alternator checks and ignition timing
• 18. Battery/Charging System
  • Battery service and charging-system troubleshooting
  • Alternator charging coil and regulator/rectifier
• 19. Starter System
  • Starter-motor inspection and service
  • Starter relay switch and troubleshooting
• 20. Lights/Switches
  • Headlight, accessory lights, taillights and indicator lamps
  • Neutral/reverse switches, ignition and handlebar switches
  • Oil-temperature sensor, fan control, fuel pump/cut relay and Foreman fuel unit/meter
• 21. Wiring Diagrams
  • Electrical wiring diagrams for FourTrax and Foreman configurations
• 22. Technical Features
  • Front differential and limited-slip operation
  • Oil cooling system
  • DC-CDI system for Foreman
• 23. Troubleshooting
  • Hard starting/no-start and lack of power
  • Poor low/idle-speed or high-speed performance
  • Poor handling diagnosis
• 24. Index
  • Alphabetical access to service topics and procedures

Taken as a whole, the chapter structure lets a technician move from symptom diagnosis to the relevant system, verify specifications and service limits, then follow the illustrated procedure for dismantling, checking and reassembling the component. The coverage extends from ordinary oil and filter service through carburetor work, top-end inspection, clutch and transmission repair, differential and final-drive setup, suspension and brake service, and electrical testing.

Illustrated Procedures, Measurements and Troubleshooting

The 1986-1989 Honda TRX350 FourTrax 4×4 & TRX350D Foreman 4×4 Service Manual PDF contains extensive diagrams and photographs that support mechanical work. Examples include lubrication-flow diagrams, cable and harness routing, exploded engine and clutch assemblies, crankshaft and transmission layouts, brake assemblies, differential and final-drive components, and electrical system diagrams. These illustrations are paired with step-by-step text so component orientation, fastener locations, routing and assembly order can be checked during a repair.

For engine work, the manual provides procedures for cylinder-head removal, camshaft timing, valve inspection, valve-guide replacement, valve-seat refacing, cylinder and piston measurement, piston-ring inspection and reassembly. Service-limit tables give measurable criteria for items such as camshaft journals, rocker arms, valve guides, cylinder bore, piston dimensions, clutch components, oil-pump clearances, crankshaft condition and transmission parts. Torque values are provided throughout the relevant chapters, including model-year differences where the manual specifies them.

Drivetrain coverage goes well beyond routine adjustment. The clutch and oil-pump chapter includes centrifugal and change-clutch service, while the crankcase/transmission chapter covers case separation, crankshaft and balancer work, shift components, bearings and output gears. The front differential/final-drive section includes gear backlash, preload, tooth-contact checks, pinion work, bearing and oil-seal replacement, and shim selection procedures. For chassis work, dedicated sections cover front suspension and steering, rear suspension, wheels, brakes, shock absorbers, swingarms and axle components.

Electrical diagnosis is similarly system-based. Ignition troubleshooting covers CDI components, ignition coil, pulse generator and timing; the battery/charging section covers battery condition, charging output and regulator/rectifier checks; the starter chapter covers starter-motor and relay diagnosis; and the lights/switches chapter covers lighting, indicators, switches, the oil-temperature system, fan control and related fuel electrical components. The dedicated wiring diagrams and final troubleshooting chapter help trace faults when the source is not immediately obvious.

Use the Correct Procedure for Maintenance, Diagnosis and Repair

This Honda TRX350 and TRX350D service manual supports routine maintenance, engine and carburetor repair, clutch and transmission work, brake and suspension service, differential/final-drive repair, electrical testing and systematic troubleshooting for the covered FourTrax 4×4 and Foreman 4×4 models. Having the specified sequences, torque values, clearances, service limits and model-year notes available during the job helps avoid relying on memory when a component must be measured, adjusted or assembled correctly.

IMAGES PREVIEW

After purchase, the 1986-1989 Honda TRX350 FourTrax 4×4 & TRX350D Foreman 4×4 Service Manual PDF is delivered as an instant PDF download. There is no physical book and no shipping delay. The file can be opened on compatible phones, tablets and computers, and the pages can be printed when a paper copy of a procedure, diagram or specification is useful at the workbench.