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Honda

Honda FourTrax 350 / Foreman 350D Service Manual Repair 1986-1989 TRX

Honda FourTrax 350 / Foreman 350D Service Manual Repair 1986-1989 TRX

$16.99
$16.99
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Vehicle data plateRef 50321
Brand
Honda
Vehicle
Atv
Models covered
Engines, Foreman 350D, FourTrax 350, Honda Engines Manuals
Years
1986, 1987, 1988, 1989
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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This manual covers the ATVs produced between 1986 and 1989. These models are recognized for their robust engineering, reliability, and utility, embodying a strong legacy in ATV manufacturing. The FourTrax 350 and its Foreman 350D variant were designed for a wide range of tasks, offering dependable performance for various applications. This comprehensive service manual provides detailed information for the maintenance, troubleshooting, and repair of your ATV. It includes step-by-step procedures for engine overhaul, fuel system service, ignition system diagnostics, transmission repair, drivetrain maintenance, suspension and brake adjustments, and electrical system troubleshooting. With clear instructions, diagrams, and technical specifications, this manual is an essential resource for owners and technicians seeking to keep these durable ATVs in optimal working condition.
🏷️ Basic Information
Identification
Make:
Honda
Model:
FourTrax 350 / Foreman 350D
Model Variant:
TRX350 (FourTrax 350), TRX350D (Foreman 350D)
Production Years:
1986-1989
Codes
Chassis Code Trx350:
TRX350
Chassis Code Trx350D:
TRX350D
👋 Introduction
Market Position
Target Audience:
Owners and mechanics of 1986-1989 Honda FourTrax 350 and TRX350D Foreman ATVs
Competitive Analysis
Value Proposition:
Comprehensive repair and maintenance guidance, enabling DIY repairs and informed servicing
Key Features
Manual Usability:
Searchable and navigable PDF format with detailed instructions and diagrams
Support:
Free replacement offered if the manual is lost
📋 Manual Details
Coverage Areas
Vehicle Model Years Covered:
1986, 1987, 1988, 1989
Vehicle Model Variants Covered:
Honda FourTrax 350 (TRX350), Honda TRX350D Foreman
Page Count
Page Count:
304
Manual Type
Manual Type:
Service Manual / Repair Manual
Language
Language:
English
Format
File Format:
PDF Download
📖 Manual Coverage
Systems Covered
Engine:
Complete overhaul, assembly, disassembly, tuning, troubleshooting
Fuel System:
Carburetor (CR26) service, adjustments (idle mixture, pilot jet, main jet), fuel pump, fuel tank
Ignition System:
CDI, magneto, spark plug specifications, troubleshooting no spark
Transmission:
Automatic transmission, clutch operation, torque converter, transmission fluid, gear shifting mechanisms
Drivetrain:
Front and rear drive shafts, differentials, axles, U-joints
Suspension:
Front forks, rear swingarm, shocks, springs, linkage, bearings
Brakes:
Front and rear drum brakes, brake cables, brake fluid specifications (if applicable), adjustment procedures
Electrical System:
Battery, charging system (stator, rectifier/regulator), lighting (headlight, taillight, brake light), starter motor, switches
Cooling System:
Air-cooled engine, radiator (if applicable to specific variants), coolant replacement (for TRX350D Foreman if liquid cooled)
Exhaust System:
Muffler, exhaust pipes, gaskets, removal and installation
Frame And Body:
Frame inspection, body panels, fenders, skid plates, seat removal
Steering:
Handlebars, steering stem, tie rods, steering linkage
Procedures Included
Maintenance:
Oil changes, filter replacement, lubrication schedule, valve clearance adjustment, spark plug replacement, brake adjustments, chain adjustment (if applicable)
Troubleshooting:
Diagnostic charts, common problems (e.g., no spark, starting issues, poor performance), error code interpretation (if applicable)
Repair:
Complete tear down and rebuild procedures for all major components, cylinder head removal/installation, piston replacement, crankshaft repair, transmission rebuild, carburetor overhaul
Installation:
Installation of replacement parts, accessories, and components
Diagnostics:
Step-by-step diagnostic guides for various systems
Technical Depth
Depth Of Coverage:
Comprehensive from basic maintenance to complete engine and transmission overhauls
Visual Aids:
Includes pictures and diagrams for clarity
Data Tables:
Torque specifications, fluid capacities, measurements
Searchability:
Searchable PDF for quick information retrieval
Navigation:
Clickable chapters for easy navigation
📊 Manual Specifications
File Format
Digital Format:
PDF
Print Quality
Print Permissions:
No restrictions on printing
Binding Type
Digital Saving Options:
No restrictions on saving/burning to disc
Paper Type
Digital Delivery:
Instant download
⚙️ Engine Specifications
Primary Engine
Engine Type:
Four-stroke, OHV, air-cooled
Engine Code:
TRX350E (typical)
Performance
Displacement:
342 cc
Bore X Stroke:
78.0 mm x 72.0 mm (typical)
Compression Ratio:
8.8:1 (typical)
Horsepower:
Approximately 21-23 hp (estimated, specific figures vary by year/tuning)
Torque:
Approximately 20-22 lb-ft (estimated, specific figures vary by year/tuning)
Fuel System
Carburetor Model:
Keihin CR26 (typical)
Fuel Type:
Unleaded gasoline
Lubrication
Engine Oil Type:
API SE, SF, or SG service classification, SAE 10W-40 (check manual for exact specification and viscosity)
Oil Capacity:
Approximately 3.4 US qt (3.2 L) with filter change (refer to manual for exact capacity)
🔧 Transmission
Standard
Transmission Type:
Automatic (Honda's Torque Converter Automatic Transmission - TC)
Gear Selection:
Automatic, with selectable low range (on Foreman models)
Features
Drive System:
Shaft drive, 2WD/4WD selectable (especially on Foreman models)
Transmission Fluid Type:
Honda Genuine ATF (Automatic Transmission Fluid) or equivalent (verify in manual)
📐 Dimensions
Exterior
Overall Length:
Approximately 76.5 inches (1945 mm) (varies slightly by model)
Overall Width:
Approximately 43.3 inches (1100 mm) (varies slightly by model)
Overall Height:
Approximately 43.1 inches (1095 mm) (varies slightly by model)
Wheelbase:
Approximately 49.2 inches (1250 mm) (varies slightly by model)
Weights
Dry Weight:
Approximately 480-520 lbs (218-236 kg) (varies by model and equipment)
Curb Weight:
Approximately 500-540 lbs (227-245 kg) (varies by model and equipment)
Ground Clearance:
Approximately 5.9 inches (150 mm) (varies by model)
🛡️ Safety Features
Ratings
Atv Safety Standards:
Designed to meet ANSI and other relevant safety standards for ATVs of its era
Active Features
Braking System:
Effective front and rear drum brakes, parking brake
Passive Features
Ergonomics:
Stable riding position, ergonomic controls, comfortable seating
Lighting:
Headlight, taillight, and brake light for visibility
💡 Technology Features
Infotainment
Infotainment System:
N/A (Basic utility ATV of its era)
Driver Assistance
Driver Assistance Features:
N/A (Basic utility ATV of its era)
Connectivity
Connectivity Features:
N/A (Basic utility ATV of its era)
🔧 Maintenance
Service Intervals
Engine Oil Change Interval:
Typically every 1000 km or 6 months, whichever comes first (refer to manual for exact specification)
Air Filter Cleaning Interval:
Regular inspection and cleaning, replacement as needed (more frequently in dusty conditions)
Spark Plug Replacement Interval:
Refer to manual, typically around 2000 km or annually
Valve Clearance Check Interval:
Typically every 2000 km or annually
Fluid Specifications
Engine Oil Specification:
API SE, SF, or SG service classification, SAE 10W-40 (verify in manual)
Transmission Fluid Specification:
Honda Genuine ATF or equivalent (verify in manual)
Known Issues
Carburetor Tuning:
Carburetors can become finicky with age, requiring periodic cleaning and adjustment of idle mixture and pilot jets for optimal performance.
Electrical Connections:
Corrosion or loose connections in the electrical system can lead to starting issues or intermittent power loss.
Suspension Wear:
Bushings and bearings in the swingarm and suspension linkages can wear over time, leading to play and reduced handling.
Drive Shaft U Joints:
Wear in the universal joints of the drive shafts can cause clunking noises and affect power delivery.
Brake Adjustment:
Drum brake adjustment may be required periodically to maintain braking performance.
📚 Vehicle History
Brand Heritage
Honda Atv Legacy:
Honda has a long and distinguished history in the development and manufacturing of ATVs, being one of the pioneers in the industry.
Model Evolution
Fourtrax Lineage:
The FourTrax 350 and Foreman 350D were key models in Honda's lineup, known for their reliability, durability, and utility. The Foreman line emphasized features like 4WD for more demanding terrain.
Production
Manufacturing Era:
Produced during a significant period of ATV development in the late 1980s.
🏆 Awards & Recognition
Recognitions
Brand Reputation:
Honda is renowned for building reliable and durable ATVs. Models from this era are often praised for their longevity.

Delivery & file format

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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