1987 Honda TRX350D Foreman 4x4 Owners Manual

The 1987 Honda TRX350D Foreman 4x4 is a rugged all-terrain vehicle featuring four-wheel drive capability, a 350cc four-stroke engine, electric start, shaft drive system, independent front suspension, and utility racks. This manual covers safety precautions, operation procedures, maintenance schedules, troubleshooting, and technical specifications for proper ownership and care of your ATV.

1. Features at a Glance 2. Safety Information 3. Controls and Instruments 4. Operation Procedures 5. Maintenance Schedule 6. Technical Specifications 7. Troubleshooting 8. Storage Guidelines 9. Warranty Information

Features at a Glance

Key components: 350cc four-stroke engine, 4WD system, electric start, utility racks, front and rear suspension.

Feature	Description
Engine Type	350cc four-stroke, air-cooled
Drive System	Shaft drive with selectable 2WD/4WD
Starting System	Electric start with backup recoil
Suspension	Independent front, swingarm rear
Brakes	Drum brakes front and rear
Fuel Capacity	3.7 gallons (14 liters)
Cargo Capacity	Front and rear utility racks
Towing Capacity	850 lbs (386 kg)
Transmission	5-speed with reverse
Drive Modes	2WD, 4WD, differential lock

Safety Information

Always wear proper safety gear and follow operating guidelines.

Always wear helmet, eye protection, gloves, and protective clothing.
Never operate under influence of alcohol or drugs.
Inspect ATV before each use for proper operation.
Use on designated trails and approved riding areas only.

WARNING! ATVs can be hazardous to operate. Always follow safety guidelines and never allow inexperienced riders to operate without proper training.

Controls and Instruments

Familiarize yourself with all controls before operation.

Control	Function
Ignition Switch	Main power and start position
Throttle Lever	Controls engine speed
Brake Levers	Front and rear brake controls
Drive Selector	2WD/4WD selection
Headlight Switch	Controls lighting system
Fuel Valve	Controls fuel flow to carburetor
Choke Lever	Cold start enrichment
Gear Shift	5-speed transmission with reverse

Operation Procedures

Proper starting and operating procedures for optimal performance.

Pre-ride inspection: Check tires, controls, lights, and fluid levels.
Starting: Turn fuel valve ON, set choke for cold starts, turn ignition key.
Warm-up: Allow engine to warm up before riding.
Driving: Select appropriate gear and drive mode for conditions.
Shutdown: Turn off engine and fuel valve when not in use.

CAUTION! Always operate in well-ventilated areas to avoid carbon monoxide poisoning.

Maintenance Schedule

Regular maintenance ensures long service life and reliability.

Service Item	Frequency
Engine Oil Change	Every 100 hours or 6 months
Oil Filter	Every 200 hours or 12 months
Air Filter	Clean every 50 hours, replace as needed
Spark Plug	Every 200 hours or 12 months
Brake Inspection	Every 100 hours
Drive Shaft Lubrication	Every 200 hours
Wheel Bearing Check	Every 300 hours
Valve Clearance	Every 300 hours

Technical Specifications

Engine: 350cc 4-stroke, air-cooled, SOHC
Bore x Stroke: 79mm x 71mm
Compression Ratio: 8.5:1
Fuel System: Carburetor with accelerator pump
Ignition: CDI electronic ignition
Transmission: 5-speed with reverse
Final Drive: Shaft drive
Suspension Front: Independent double wishbone
Suspension Rear: Swingarm with dual shocks
Brakes: Drum brakes front and rear
Tires: Front 24x8-12, Rear 24x10-11
Dimensions: 80.3" L x 44.5" W x 45.7" H
Weight: 551 lbs (250 kg)

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, or compression issue	Check fuel valve, spark plug, choke setting
Poor performance	Clogged air filter, dirty carburetor	Clean/replace air filter, service carburetor
Electrical problems	Battery, fuse, or wiring	Check battery charge, fuses, connections
Brakes not working	Worn pads, adjustment needed	Inspect brake components, adjust cables
4WD not engaging	Selector mechanism, drive components	Check selector linkage, drive shaft

Service: Contact authorized Honda dealer for major repairs.

Storage Guidelines

Proper storage procedures for extended periods of non-use.

Clean ATV thoroughly and apply protective coating to metal surfaces.
Change engine oil and filter before storage.
Add fuel stabilizer and run engine to distribute through system.
Remove battery and store in cool, dry place with periodic charging.
Store in dry, covered location with tires inflated to proper pressure.

CAUTION! Never store with fuel in carburetor float bowl to prevent varnish buildup.

Warranty Information

Honda limited warranty coverage for 1987 TRX350D Foreman 4x4.

Limited Warranty: 6 months commercial use, 12 months recreational use from date of purchase. Coverage includes defects in materials and workmanship. Normal maintenance items, wear items, and damage from abuse or improper maintenance are not covered.

For warranty claims and service, contact your authorized Honda dealer with proof of purchase. Keep all maintenance records for warranty verification.