Market Position:
The Honda TRX 90 series (TRX90, TRX90ex, TRX90x) represents Honda's entry-level sport ATV offering, typically targeted at younger riders or those seeking a recreational, user-friendly off-road experience. It's known for its reliability and ease of operation, making it a popular choice for family trail riding.
Competitive Analysis:
Competes with similar entry-level ATVs from manufacturers like Yamaha (e.g., Raptor 90), Suzuki (e.g., LT-Z90), and Polaris (e.g., Outlaw 90). Its key differentiators often include Honda's reputation for build quality and durability.
Key Features:
User-friendly operation, reliable Honda engine, automatic transmission (often), electric start, durable chassis, manageable power delivery for its class.
Engine Systems:
Engine overhaul, disassembly, reassembly, carburetor (carb, carburettor, carboretor), fuel system, ignition system, lubrication system, charging system, starting system, cooling system (if applicable, though typically air-cooled for this model), exhaust system, PGM-FI (for applicable models if any, though likely carbureted)
Drivetrain Systems:
Drive train, primary reduction gear, transmission, clutch, swingarm (swinger), axles, wheels, tires
Chassis Systems:
Frame, suspension (front struts, rear suspension), brakes (front, rear, pads), steering, handlebars, bodywork (plastics, panels, fenders), seat
Electrical Systems:
Electrical system, battery, starter, lights (head, tail), switches, stator, flywheel magneto, rectifier, coil
Maintenance Procedures:
Scheduled maintenance, fluid changes (engine oil, gear oil), lubrication, filter replacement, battery maintenance, tire pressure checks, brake adjustments, valve clearance adjustment, spark plug service, air filter cleaning/replacement, fuel filter cleaning/replacement, throttle cable adjustment, gearshift adjustment
Repair Procedures:
Complete tear down and rebuild, engine internal component replacement (piston, connecting rod, crankshaft, cams, cylinder, jug), carburetor overhaul and tuning (mixture screw, pilot jet, slow jet, main jet), transmission repair, brake caliper service, suspension component replacement, electrical component testing and replacement, body panel repair/replacement, starter motor repair, flywheel removal/installation
Troubleshooting Procedures:
Diagnostic procedures for common problems (no spark, starting issues, idle problems, poor performance), error code identification (if applicable to the model), troubleshooting electrical circuits, troubleshooting fuel delivery issues, troubleshooting engine performance problems
Installation Procedures:
Installation of accessories, component replacement procedures
Technical Depth:
Comprehensive. Covers everything from basic maintenance and routine checks to complete engine and transmission rebuilds. Includes detailed diagrams, torque specifications, and diagnostic procedures.
Engine Type:
Four-stroke, Air-cooled (typically)
Displacement:
Approximately 86 cc to 100 cc (specific displacement may vary slightly by exact model year and variant, but generally falls within this range for the 90cc class).
Bore X Stroke:
Varies, typically around 50.0 mm x 45.1 mm (refer to specific model year for exact figures).
Compression Ratio:
Typically around 9.5:1 to 10.0:1 (refer to specific model year for exact figures).
Valvetrain:
SOHC, 2 valves per cylinder (camshaft, valves)
Horsepower:
Not explicitly stated in product info, but typically in the range of 6-8 HP for this class.
Torque:
Not explicitly stated in product info, but generally low-end focused for recreational use.
Fuel Delivery:
Carbureted (CV type, potentially with an automatic enrichment circuit). Specific carburetor models and jetting (pilot jet, main jet, mixture screw) are detailed in the manual.
Fuel Tank Capacity:
Approximately 2.0 - 2.5 liters (refer to specific model year for exact figures).
Recommended Fuel:
Unleaded gasoline, typically 87 octane or higher.
Ignition Type:
CDI (Capacitor Discharge Ignition)
Starting System:
Electric start, with a kickstart backup (kick) for emergencies.
Oil Type:
Motorcycle-specific 4-stroke engine oil, typically SAE 10W-40 or 20W-40 (viscosity) with API classification SF, SG, or SH. The manual will specify exact types and capacities.
Oil Capacity:
Approximately 1.0 - 1.2 liters (refer to specific model year for exact figures).
Length:
Approximately 1500-1600 mm (refer to specific model year for exact figures).
Width:
Approximately 950-1050 mm (refer to specific model year for exact figures).
Height:
Approximately 950-1050 mm (refer to specific model year for exact figures).
Dry Weight:
Approximately 110-120 kg (refer to specific model year for exact figures).
Curb Weight:
Not explicitly stated, but typically around 120-130 kg with fluids.
Towing Capacity:
Not typically specified or recommended for this class of ATV.
Payload Capacity:
Not typically specified or recommended for this class of ATV.
Front Tire Size:
Typically 16 x 7.00-7 (e.g., 16x7-7) or similar bias-ply tires.
Rear Tire Size:
Typically 16 x 7.00-7 (e.g., 16x7-7) or similar bias-ply tires.
Wheel Bolt Pattern:
Not applicable (typically hub-mounted wheels).
Engine Oil Change:
Typically every 600 miles or 6 months, whichever comes first. The manual will provide precise intervals.
Gear Oil Change:
Typically every 1200 miles or 12 months. The manual will provide precise intervals.
Air Filter Cleaning:
As needed, depending on riding conditions (e.g., dusty environments may require more frequent cleaning/replacement). Typically recommended every few months.
Spark Plug Replacement:
Approximately every 2400 miles or 24 months. The manual will specify the correct spark plug type and gap.
Valve Clearance Check:
Typically at initial break-in and then every 2400 miles or 24 months. Critical for engine performance and longevity.
Engine Oil Specification:
SAE 10W-40 API SG or higher. Refer to the manual for exact API classification and any specific Honda recommendations.
Transmission Gear Oil Specification:
SAE 80 or 85W API GL-3 or GL-4 gear oil. Refer to the manual for exact specifications.
Brake Fluid Specification:
DOT 3 or DOT 4 hydraulic brake fluid.
Coolant Specification:
Typically air-cooled, so no coolant is required. The manual will confirm this.
Common Issues:
Carburetor gumming or clogging if not used regularly, occasional starter motor issues, wear and tear on suspension components with heavy use, CVT belt wear over time. The manual addresses troubleshooting and repair for these.
Brand Heritage:
Honda has a long and storied history in powersports, known for its engineering excellence, reliability, and innovation across motorcycles, ATVs, and other recreational vehicles. The 'TRX' designation has been a staple in their ATV lineup for decades.
Model Evolution:
The TRX 90 lineage represents Honda's commitment to providing an accessible and user-friendly ATV. The 'ex' and 'x' suffixes indicate minor updates or trim variations over the years, often with aesthetic changes or slight feature adjustments. The discontinuation for 2010-2011 and subsequent reintroduction reflects market demand and product cycle adjustments.
Production Locations:
Honda ATVs are manufactured globally. Specific locations for the TRX 90 series during these years would typically be in North America or Asia, depending on the model year and market.