Vehicle Category:
High-performance sport ATV
Target Audience:
Enthusiasts, racers, and serious recreational riders seeking maximum performance and agility.
Key Competitors:
Yamaha Warrior, Honda TRX250R/300EX, Kawasaki Mojave.
Performance Focus:
Emphasis on power delivery, handling, and suspension for off-road sport riding.
Technical Innovation:
Features like Suzuki's TRAC (Traction Control) system on the front suspension offered advanced handling for its time.
Manual Title:
Suzuki LT250R LT 250R Service Repair Manual 1988-1992
Covered Years:
1988, 1989, 1990, 1991, 1992
Estimated Page Count:
Approx. 350-450 pages (typical for comprehensive factory service manuals of this era)
Manual Type:
Factory Service Manual / Repair Manual
Engine System:
Complete engine overhaul, disassembly, assembly, tuning, carburetor, ignition system, cooling system (air-cooled), lubrication.
Transmission System:
Gearbox, clutch, shift mechanism, lubrication, troubleshooting.
Fuel System:
Fuel tank, petcock, fuel lines, carburetor (Mikuni VM series typically), jetting, float adjustment.
Electrical System:
Ignition system (CDI), lighting, battery, charging system (stator/generator), wiring diagrams, troubleshooting.
Chassis Suspension:
Front forks (TRAC system), rear suspension (Pro-Link), swingarm, shock absorber, linkages, maintenance, seals, adjustments.
Braking System:
Front and rear disc brakes, hydraulic system, master cylinders, calipers, pads, fluid specifications, bleeding procedures.
Wheel Tire System:
Wheels, hubs, bearings, tire sizes, recommended pressures.
Bodywork Frame:
Frame inspection, plastic body panels, seat, handlebars, controls, mounting hardware.
Maintenance Procedures:
Regular inspections, lubrication points, oil changes, filter replacements, spark plug service, brake adjustments.
Repair Procedures:
Engine rebuild, transmission repair, suspension overhaul, brake caliper rebuild, electrical component replacement.
Troubleshooting Guides:
Diagnostic charts for common performance issues, starting problems, electrical faults, and mechanical failures.
Torque Specifications:
All critical fastener torque values for engine, chassis, and suspension components.
Electrical Diagnostics:
Wiring diagrams, component testing, fault finding using electrical principles.
Depth Of Coverage:
Comprehensive. Covers everything from basic rider maintenance to full engine and transmission rebuilds.
Engine Type:
2-stroke, single-cylinder, reed-valve induction
Displacement:
246 cc (approximately)
Bore X Stroke:
Approx. 66 mm x 72 mm (specific figures vary slightly by sub-model year)
Cooling System:
Air-cooled
Horsepower Output:
Estimated 30-35 HP (stock, varies by year and tuning)
Torque Output:
Estimated 20-25 lb-ft (stock, varies by year)
Carburetor Model:
Typically Mikuni VM32SS (or similar VM series)
Fuel Type:
Unleaded gasoline, 87-91 octane recommended (pre-mix with 2-stroke oil)
Fuel Mixture Ratio:
50:1 (High-quality 2-stroke oil, e.g., Yamalube 2M or equivalent)
Transmission Type:
6-speed manual, constant mesh
Clutch Type:
Wet multi-plate
Final Drive:
O-ring sealed chain drive
Gear Ratios:
Specific ratios provided in the manual, essential for performance tuning.
Transmission Fluid Type:
API GL-4, SAE 80W-90 hypoid gear oil
Transmission Fluid Capacity:
Approx. 0.6 Liters (refer to manual for exact capacity)
Overall Length:
Approx. 70-72 inches (varies by year)
Overall Width:
Approx. 46-48 inches (varies by year)
Overall Height:
Approx. 43-45 inches (varies by year)
Wheelbase:
Approx. 49-50 inches (varies by year)
Dry Weight:
Approx. 330-340 lbs (varies by year)
Fuel Tank Capacity:
Approx. 2.6 gallons (7.8 Liters)
Ground Clearance:
Approx. 4-5 inches (varies by year)
Atv Safety Standards:
Designed to meet AMA and industry safety standards for sport ATVs.
Front Suspension System:
TRAC (Traction Control) system (on most models), independent double A-arm.
Rear Suspension System:
Pro-Link single shock system.
Braking Control:
Front and rear hydraulic disc brakes.
Footpegs:
Wide, non-slip footpegs for rider stability.
Handlebar Design:
Handlebar grips and padding for improved control and rider comfort.
Oil Change Interval:
Every 20-30 hours of operation or annually. Consult manual for precise intervals based on riding conditions.
Air Filter Cleaning:
Every 5-10 hours of operation, or more frequently in dusty conditions.
Spark Plug Replacement:
Every 20-40 hours or as needed based on inspection.
Chain Lubrication Adjustment:
Regularly, every 5-10 hours or after wet riding.
2 Stroke Oil Type:
High-quality synthetic or semi-synthetic 2-stroke oil, JASO FD or higher rating.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid.
Coolant Type:
N/A (Air-cooled engine)
Common Wear Items:
Clutch plates, brake pads, wheel bearings, swingarm/linkage bearings, fork seals, piston rings.
Carburetor Tuning Sensitivity:
These 2-stroke engines can be sensitive to altitude, temperature, and fuel quality, requiring proper jetting.
Trac System Maintenance:
Requires regular inspection and proper lubrication to function correctly.
Suzuki Atv Legacy:
Suzuki has a strong heritage in motorsports, particularly with its 2-stroke motorcycles and ATVs, known for performance and reliability.
Lt250R Lineage:
The LT250R was a significant evolution of Suzuki's sport ATV line, building upon earlier models and incorporating advancements for racing and aggressive riding.
Production Period:
The LT250R platform spanned various iterations from the early 1980s through the early 1990s, with this manual covering a key performance era.
Manufacturing Location:
Japan (Suzuki Motor Corporation)
