Segment:
Entry-level youth ATV / Quad bike
Target Audience:
Enthusiasts, parents of young riders, and service technicians working on vintage recreational vehicles.
Competitors 1990:
Yamaha YFM80 Badger, Honda TRX70/90, Kawasaki Mojave 80.
Features:
Automatic transmission (CVT), electric start, reliable two-stroke engine, compact and lightweight chassis.
Manual Value:
Essential for maintaining the longevity and performance of the LT80L Quad Runner, enabling DIY repairs and informed servicing.
Engine Mechanical:
Complete disassembly, inspection, repair, and assembly of engine components (cylinder, piston, crankshaft, connecting rod, lubrication system, cooling system).
Fuel System:
Carburetor inspection, cleaning, adjustment, and overhaul; fuel tank, fuel lines, and fuel pump.
Ignition System:
Spark plug specifications, ignition timing, CDI unit, and stator/rotor inspection.
Transmission Drivetrain:
Automatic transmission (CVT) overhaul, clutch operation, chain drive inspection and adjustment, rear axle service.
Brakes:
Brake caliper overhaul, brake pad replacement, brake fluid bleeding, brake shoe adjustment, parking brake operation.
Suspension Steering:
Front and rear suspension component inspection, shock absorber service, steering column and tie-rod end inspection/replacement, wheel bearing service.
Electrical System:
Wiring diagrams, lighting system, battery inspection and maintenance, starter motor, charging system (alternator/stator).
Frame Chassis:
Frame inspection for damage, front and rear bumper mounting, skid plates.
Bodywork:
Body panel removal and installation, fenders, seat, handle grips.
Routine Maintenance:
Oil changes, filter replacements, lubrication points, chain adjustment, spark plug service, tire pressure checks.
Troubleshooting:
Diagnostic flowcharts for common starting, running, and electrical issues.
Repair Procedures:
Step-by-step instructions for engine rebuilds, transmission repairs, brake system overhauls, and suspension component replacement.
Inspection Checks:
Detailed inspection guidelines for critical components to identify wear, damage, or potential failures.
Specifications Settings:
Torque specifications for all fasteners, engine tuning parameters, electrical component resistance values.
Depth:
Comprehensive, covering from basic maintenance to complete engine and transmission rebuilds.
Engine Type:
Two-stroke, air-cooled
Displacement:
72 cc (4.4 cubic inches)
Bore X Stroke:
43.0 mm x 48.0 mm (1.69 in x 1.89 in)
Carburetor:
Mikuni VM16SC (example, specific model may vary)
Horsepower Estimated:
Approximately 6-8 HP (specifications not always published for youth ATVs)
Torque Estimated:
Low to mid-range power delivery optimized for recreational riding.
Fuel Type:
Unleaded gasoline
Fuel Mixture:
Pre-mix (e.g., 50:1 ratio of gasoline to 2-stroke oil, confirmed in manual).
Fuel Tank Capacity:
Approximately 2.0 Liters (0.5 US gal)
Oil Type:
API TC W II or TC W III compliant 2-stroke engine oil.
Safety Standard:
Designed for youth rider supervision; always follow age recommendations and safety guidelines.
Throttle Limiter:
Often includes a throttle limiter screw for controlled speed adjustment.
Parking Brake:
Standard rear brake lever lock.
Engine Guard:
Included for rider protection.
Footwells:
Integrated footboards for rider protection.
Rider Age:
Intended for younger riders (e.g., 12+ years), always check manufacturer recommendations and local laws.
Engine Oil Change:
Every 1000 km or 6 months, or as specified for severe use in the manual.
Air Filter Cleaning:
Inspect and clean every 500 km, replace as needed.
Spark Plug Inspection:
Every 1000 km.
Chain Adjustment:
Check and adjust every 500 km.
Transmission Fluid:
Suzuki SHA or equivalent SAE 80 hypoid gear oil (confirm with manual for specific grade).
Brake Fluid:
DOT 3 or DOT 4 brake fluid (confirm with manual).
Grease Type:
Lithium-based multi-purpose grease (specific grades may be recommended in manual).
Common Wear Points:
Carburetor jets clogging, worn drive clutch weights, CDI ignition module failure, rear axle bearings.
Fuel Mixture Problems:
Incorrect 2-stroke oil to gas ratio leading to fouled spark plugs or engine damage.
Starting Difficulties:
Often related to carburetor issues, old fuel, or weak ignition.
Suzuki Atv Legacy:
Suzuki has a long history in motorsport and ATV development, known for robust and reliable recreational vehicles.
Lt80 Lineage:
The LT80 Quad Runner was a foundational model for Suzuki in the youth ATV market, evolving into later models like the LT-Z50 and LT-80.
Production Period:
The LT80 was produced for many years, with the 1990 model representing an early iteration of this popular youth quad.
