Target Audience:
Owners of the Suzuki LT-Z90 QuadSport, home mechanics, ATV enthusiasts
Utility:
Essential tool for maintaining and repairing the ATV, reducing reliance on costly dealership services.
Advantage:
Provides the same level of detail as factory-issued manuals, enabling in-depth DIY repairs.
Feature 1:
Comprehensive coverage for all major systems.
Feature 2:
Step-by-step instructions with clear illustrations.
Feature 3:
Diagnostic and troubleshooting guidance.
Engine:
Complete engine overhaul, carburetor, ignition system, cooling system (air-cooled), lubrication system
Transmission:
Automatic CVT (Continuously Variable Transmission) disassembly, inspection, and repair; final drive
Chassis:
Frame, suspension (front and rear), steering system, wheels, tires
Brakes:
Front and rear brake system inspection, repair, and bleeding (hydraulic disc brakes)
Electrical:
Wiring diagrams, lighting system, battery, starter, ignition coil, CDI unit, troubleshooting electrical faults
Bodywork:
Body panels, fenders, seat, handle grips, decals
Maintenance:
Scheduled maintenance, oil changes, filter replacements, spark plug service, chain adjustment (if applicable, though often belt drive), brake adjustments
Troubleshooting:
Step-by-step diagnostic procedures for common and uncommon issues, fault finding trees
Repair:
Detailed instructions for component disassembly, reassembly, and repair for all major systems
Rebuilding:
Comprehensive instructions for engine and transmission rebuilding
Restoration:
Guidance for bringing a used ATV back to original specifications
Depth:
Comprehensive: Covers everything from basic fluid checks to complete engine and transmission rebuilds.
Diagnostic Capability:
Advanced diagnostic routines and symptom-based troubleshooting
Visual Aid Quality:
Detailed illustrations and diagrams for clarity
Engine Type:
Four-stroke, SOHC, air-cooled
Displacement:
88.4 cm³ (5.4 cu. in.)
Bore X Stroke:
49.0 mm x 48.0 mm (1.93 in x 1.89 in)
Horsepower:
Approximately 6.5 HP (Varies slightly based on tuning and altitude)
Torque:
N/A (Specific figures not readily published for this model, but sufficient for target use)
Fuel Delivery:
Mikuni VM16SH carburetor
Fuel Type:
Unleaded gasoline (87 octane or higher)
Fuel Tank Capacity:
2.0 L (0.5 US gal.)
Ignition System:
Electronic ignition (CDI)
Spark Plug Type:
NGK CR6HSA or DENSO U20FSR-U
Oil Type:
SAE 10W-40 API SE, SF or SG
Oil Capacity:
0.7 L (0.7 US qt.) without oil filter change, 0.8 L (0.8 US qt.) with oil filter change
Overall Length:
1510 mm (59.4 in.)
Overall Width:
925 mm (36.4 in.)
Overall Height:
940 mm (37.0 in.)
Wheelbase:
1030 mm (40.6 in.)
Ground Clearance:
120 mm (4.7 in.)
Dry Weight:
115 kg (253.5 lbs.)
Curb Weight:
N/A (Typically includes fluids, closer to dry weight for ATVs)
Gross Vehicle Weight Rating:
N/A (Not typically specified for this class of ATV, designed for single rider)
Towing Capacity:
N/A (Not equipped for towing)
Payload Capacity:
N/A (Designed for rider only)
Front Rack Capacity:
N/A (No front rack)
Rear Rack Capacity:
N/A (No rear rack)
Crash Test Ratings:
N/A (ATVs are not subject to standard automotive crash testing)
Braking System:
Hydraulic disc brakes front and rear
Parking Brake:
Yes (Lever type)
Throttle Limiter:
Adjustable throttle stop screw for speed control
Tether Cord:
Kill switch tether cord
Lighting:
Halogen headlights and taillight
Footwells:
Full floorboards with heel guards
Handlebar:
Grip design for enhanced control
Infotainment System:
N/A (Basic ATV, no complex infotainment)
Driver Assistance Features:
N/A (Focus on basic operation and safety features)
Connectivity Features:
N/A
Starting Method:
Electric Start
Headlights:
Dual Halogen 12V 35W
Taillight:
LED Taillight/Brake Light
Engine Oil Change:
Every 30 operating hours or 6 months, whichever comes first. More frequently with heavy use.
Oil Filter Change:
Every 60 operating hours or 12 months, coinciding with every second oil change.
Air Filter Cleaning:
Every 15 operating hours or as needed based on dust conditions. Replace if damaged.
Spark Plug Inspection:
Every 30 operating hours or 6 months. Adjust gap or replace as needed.
Valve Clearance Adjustment:
Every 60 operating hours or 12 months. Critical for engine performance and longevity.
Brake Fluid Check:
Periodically, and flush/replace every 2 years or as per manual recommendation.
Engine Oil:
SAE 10W-40 API SE, SF or SG
Transmission Gear Oil:
Suzuki Gear Oil API GL-5, SAE 80W-90
Brake Fluid:
DOT 3 or DOT 4 (refer to manual for exact specification)
Common Issue 1:
Carburetor gumming/clogging due to infrequent use or poor fuel quality. Manual provides cleaning and adjustment procedures.
Common Issue 2:
CVT belt wear or slippage. Manual details inspection and replacement steps.
Common Issue 3:
Slightly underpowered for larger riders or steep inclines, but this is inherent to the model's design for youth riders. Manual covers engine tuning aspects.
Common Issue 4:
Electrical connection corrosion in damp environments. Manual includes troubleshooting for electrical circuits.
Manufacturer:
Suzuki Motor Corporation, Japan
Heritage Focus:
Suzuki is renowned for its expertise in lightweight, performance-oriented vehicles, including motorcycles and ATVs.
Segment:
Youth/Entry-level ATV
Introduction Year:
The LT-Z90 was introduced around 2006/2007 as a successor to smaller models, designed for younger riders with features like a CVT and electric start.
Key Changes 2009:
While major redesigns are not extensively documented for this specific year, Suzuki typically refined components and aesthetics in its model lineup.
Production Period:
Mid-2000s to early 2010s (exact end year varies by region).
Manufacturing Location:
Primarily manufactured in Taiwan under Suzuki's supervision.
