1988 Suzuki 250 Quadrunner Manual

The 1988 Suzuki 250 Quadrunner is a four-wheel ATV featuring a 246cc four-stroke single-cylinder engine, automatic clutch with 5-speed transmission, shaft drive system, front and rear suspension, electric start with backup recoil starter, front and rear hydraulic brakes, and full instrumentation. Below are key sections for safety, features, operation, maintenance, specifications, and troubleshooting.

1. Features at a Glance 2. Safety Information 3. Controls and Instruments 4. Specifications 5. Operation Instructions 6. Maintenance Schedule 7. Basic Maintenance Procedures 8. Troubleshooting 9. Storage Guidelines 10. Warranty Information

Features at a Glance

Key components: 246cc four-stroke engine, automatic clutch with 5-speed transmission, shaft drive, front and rear suspension, electric start with recoil backup.

Feature	Description
Engine Type	246cc, 4-stroke, air-cooled, single cylinder
Transmission	5-speed with automatic clutch
Drive System	Shaft drive
Starting System	Electric start with recoil starter backup
Brakes	Front and rear hydraulic drum brakes
Suspension	Front telescopic forks, rear swingarm
Fuel Capacity	3.7 gallons (14 liters)
Tires	Front: 22x11-8, Rear: 22x12-8
Weight	385 lbs (175 kg)
Load Capacity	330 lbs (150 kg)

Safety Information

Always wear proper protective equipment and follow safe operating procedures.

Always wear helmet, eye protection, gloves, and protective clothing.
Never operate under influence of alcohol or drugs.
Do not carry passengers - designed for single rider only.
Avoid paved surfaces - not designed for road use.
Keep hands and feet away from moving parts.

WARNING! ATVs can be hazardous to operate. Always follow safety guidelines and receive proper training.

Controls and Instruments

Familiarize yourself with all controls before operation.

Control	Function
Ignition Switch	Main power and start position
Throttle Lever	Right handlebar - controls engine speed
Brake Levers	Left and right handlebars - front and rear brakes
Gear Shift Lever	Left foot - 5-speed transmission
Choke Lever	For cold starting
Fuel Valve	Controls fuel flow from tank
Speedometer	Shows speed and odometer
Neutral Indicator	Green light when in neutral

Specifications

Engine: 246cc, 4-stroke, air-cooled, single cylinder OHC
Bore x Stroke: 72.0 x 60.4 mm
Compression Ratio: 9.5:1
Carburetor: Mikuni VM24SS
Ignition System: CDI
Transmission: 5-speed constant mesh
Final Drive: Shaft
Suspension Front: Telescopic forks, 5.9 in travel
Suspension Rear: Swingarm, 5.9 in travel
Brakes Front/Rear: Hydraulic drum
Tires Front: 22x11-8
Tires Rear: 22x12-8
Fuel Capacity: 3.7 gal (14L)
Oil Capacity: 1.7 qt (1.6L)

Operation Instructions

Proper starting and operating procedures for optimal performance.

Pre-ride inspection: Check tires, controls, fluids, and lights.
Starting: Turn fuel valve ON, set choke for cold engine, turn ignition key.
Warm-up: Allow engine to warm for 2-3 minutes before riding.
Shifting: Use gear shift lever - neutral is between 1st and 2nd gear.
Braking: Use both front and rear brakes together for smooth stops.
Turning: Lean body into turns and reduce speed.

CAUTION! Always perform pre-ride inspection. Never operate without proper training.

Maintenance Schedule

Regular maintenance ensures long service life and safe operation.

Item	Every 6 mo	Every Year	Every 2 Years
Engine Oil	✓
Oil Filter		✓
Air Filter	✓
Spark Plug		✓
Brake Fluid			✓
Drive Shaft Oil		✓
Wheel Bearings		✓
Valve Clearance		✓

Basic Maintenance Procedures

Essential maintenance tasks for proper ATV care.

Engine Oil Change: Drain old oil, replace filter, refill with SAE 10W-40.
Air Filter Cleaning: Remove, clean with solvent, re-oil and reinstall.
Spark Plug: Check gap (0.024-0.028 in), clean or replace as needed.
Tire Pressure: Maintain 3.5 psi front, 3.5 psi rear for normal riding.
Chain Adjustment: Check tension and lubricate regularly.
Brake Inspection: Check pad wear and fluid level.

WARNING! Always disconnect battery before maintenance. Use proper tools.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Engine won't start	Fuel, spark, or compression issue	Check fuel valve, spark plug, choke setting
Poor performance	Dirty air filter, clogged carb	Clean air filter, inspect carburetor
Hard shifting	Low oil, clutch adjustment	Check oil level, adjust clutch cable
Brakes weak	Worn pads, air in lines	Inspect pads, bleed brake system
Battery not charging	Loose connections, bad regulator	Check connections, test charging system
Overheating	Low coolant, dirty fins	Check coolant level, clean cooling fins

Storage Guidelines

Proper storage procedures for extended periods of non-use.

Fuel System: Add fuel stabilizer and run engine for 5 minutes.
Battery: Remove and store in cool, dry place with periodic charging.
Tires: Inflate to proper pressure and elevate off ground if possible.
Cleaning: Thoroughly clean entire ATV and apply protective coating.
Cover: Store in dry location with breathable cover.

CAUTION! Never store with fuel in carburetor. Drain completely or use stabilizer.

Warranty Information

1988 Suzuki Quadrunner limited warranty coverage and service information.

Warranty Period: 12 months from date of purchase
Coverage: Manufacturer defects in materials and workmanship
Exclusions: Normal wear, improper maintenance, accidents
Service Network: Authorized Suzuki dealerships nationwide
Contact: Suzuki Customer Service 1-800-828-RIDE
Parts: Genuine Suzuki parts recommended for all repairs

Note: Warranty may vary by region. Consult local dealer for specific terms.