Positioning:
The Suzuki LT-Z50 QUAD SPORT was positioned as an entry-level youth ATV, designed for young riders and recreational trail use. Its emphasis was on ease of operation, safety, and Suzuki's renowned reliability.
Competitors:
Competed with similar youth ATVs from manufacturers like Honda (TRX90), Yamaha (Raptor 90/Banshee 50 precursor), Polaris (Outlaw 50/Sportsman 50), and Can-Am (DS 70/90).
Features:
Automatic transmission, electric start, reliable 4-stroke engine, adjustable throttle limiter for parental control, low center of gravity for stability, straightforward maintenance.
Engine:
Engine assembly, disassembly, inspection, repair, carburetor, ignition system, lubrication system, cooling system (air-cooled), exhaust system.
Transmission:
Automatic transmission (CVT), drive clutch, driven clutch, belt inspection and replacement, final drive, differential (if applicable).
Chassis:
Frame inspection and repair, suspension system (front and rear), steering system, wheel bearings, linkages.
Brakes:
Front and rear brake system, brake pad inspection and replacement, brake fluid, master cylinder, brake lines, brake drum/disc maintenance.
Electrical:
Ignition system, lighting system (headlights, taillights, brake lights), battery, starter motor, wiring diagrams, fuses, switches.
Fuel System:
Fuel tank, fuel lines, fuel filter, carburetor adjustment and cleaning, fuel pump (if applicable).
Bodywork:
Body panels, fenders, seat, handlebars, decals, general appearance maintenance.
Routine Maintenance:
Oil changes, filter replacements, spark plug checks, air filter cleaning/replacement, chain lubrication and adjustment, tire pressure checks.
Troubleshooting:
Diagnostic procedures for common issues, symptom-based troubleshooting guides, electrical system diagnostics.
Major Repairs:
Engine rebuilds, transmission overhaul, suspension component replacement, brake system overhauls.
Component Replacement:
Detailed steps for replacing parts such as carburetors, starters, brake components, clutch parts, suspension arms, etc.
Adjustments:
Carburetor tuning, brake adjustments, throttle cable adjustment, chain tension adjustment.
Depth:
Comprehensive, covering routine maintenance to complete engine and transmission overhauls. Includes detailed specifications, torque values, and diagnostic information.
Engine Code:
Likely derived from Suzuki's popular small displacement scooter engines of the era. Specific code not provided, but typically a single-cylinder, air-cooled design.
Displacement:
Approximately 49cc
Bore X Stroke:
Typical for this displacement, approximately 39.0 mm x 41.5 mm
Compression Ratio:
Around 10.0:1
Valvetrain:
SOHC (Single Overhead Cam), 2 valves
Cooling System:
Air-cooled
Horsepower:
Estimated 3.0 - 4.0 HP at around 7000 RPM (exact figures vary)
Torque:
Estimated 3.0 - 3.5 lb-ft at around 6000 RPM (exact figures vary)
Carburetor Type:
Mikuni VM Series (likely 16-20mm bore size) or similar Keihin
Fuel Type:
Unleaded Gasoline (87 Octane minimum recommended)
Fuel Tank Capacity:
Approximately 1.2 - 1.5 Liters (0.3 - 0.4 Gallons)
Oil Type:
SAE 10W-40 API SF or SG motorcycle oil recommended
Oil Capacity:
Approximately 0.8 - 1.0 Liters (0.8 - 1.1 Quarts)
Overall Length:
Approximately 1450 mm (57.1 inches)
Overall Width:
Approximately 900 mm (35.4 inches)
Overall Height:
Approximately 940 mm (37.0 inches)
Wheelbase:
Approximately 1020 mm (40.2 inches)
Ground Clearance:
Approximately 100 mm (3.9 inches)
Dry Weight:
Approximately 90 kg (198 lbs)
Curb Weight:
Approximately 95 kg (209 lbs)
Payload Capacity:
Not specified for recreational ATVs, generally limited to rider weight plus minimal gear.
Safety Standards:
Designed to meet ANSI standards for youth ATVs. Features like throttle limiter and easily accessible kill switch are paramount.
Throttle Limiter:
Adjustable throttle stop screw to limit maximum speed and acceleration, crucial for young riders.
Kill Switch:
Large, easily accessible handlebar-mounted kill switch for immediate engine shutdown.
Automatic Transmission:
Simplifies operation and reduces rider error by eliminating manual shifting.
Low Center Of Gravity:
Designed for stability during operation and to minimize the risk of rollovers.
Full Floorboards:
Provide foot protection from debris and the elements.
Long Travel Suspension:
Helps absorb impacts and maintain tire contact with the ground for better control.
Initial Service:
Recommended at 10-20 hours or 1 month of operation (oil change, check chain tension, check bolts).
Regular Oil Change:
Every 100 hours or 6 months, whichever comes first.
Air Filter Maintenance:
Clean every 20 hours or 3 months; replace if damaged or excessively dirty.
Spark Plug Check:
Inspect every 50 hours or 6 months; replace as needed.
Chain Lubrication Adjustment:
Lubricate every 10 hours or monthly; adjust tension every 20 hours or 3 months.
Engine Oil:
SAE 10W-40 API SF or SG motorcycle oil. Capacity: 0.8 - 1.0 Liters.
Brake Fluid:
DOT 3 or DOT 4 brake fluid.
Gear Oil:
Not typically used in this configuration, as the engine oil lubricates the transmission and final drive.
Carburetor Clogging:
Common in carbureted engines, especially if fuel sits for extended periods. Regular fuel stabilizer use and cleaning are recommended.
Cvt Belt Wear:
Belts can wear over time with heavy use. Inspection and replacement according to the service interval are important for optimal performance.
Throttle Limiter Adjustment:
Over time, the throttle limiter might need readjustment as components wear, ensuring it remains effective for safety.
Battery Maintenance:
Standard for electric start vehicles; ensure battery is kept charged, especially during off-seasons, to prevent premature failure.
Heritage:
Suzuki has a long and successful history in powersports, particularly with its QuadSport line of ATVs, known for their performance and durability. The brand is synonymous with reliable engine technology and sporty handling.
Evolution:
The LT-Z50 was a key model in Suzuki's youth ATV lineup, building on previous iterations and refining the design for younger riders. It served as a gateway for many to the Suzuki ATV experience, preceding models like the LT-Z90.
Production Period:
The LT-Z50 was produced for several years, with the 2005 model being a representative example of its design and features during that generation. Production continued with minor updates in subsequent years.
