Market Position:
The Yamaha Banshee 350 occupied a significant position in the high-performance sport ATV market during its production run. It was renowned for its powerful two-stroke twin-cylinder engine and aggressive styling, making it a favorite for recreational and competitive riders.
Competitive Analysis:
Competed primarily with other sport ATVs of the era, such as models from Suzuki (like the LT250R/LT-R450 predecessors), Kawasaki (KFX series), and Honda (TRX series). The Banshee was often lauded for its raw power and twin-cylinder character, differentiating it from single-cylinder competitors.
Key Features:
The 2002 Yamaha Banshee 350 is characterized by its liquid-cooled, reed-valve, two-stroke twin-cylinder engine, dual Mikuni carburetors, aggressive styling, and a robust chassis designed for off-road performance. Its popularity cemented its status as a legendary sport ATV.
Coverage Areas:
General Information, Maintenance, Engine Removal and Installation, Engine Fuel System, Engine Lubrication and Cooling, Engine Combustion System, Transmission System, Front Wheel and Steering System, Rear Wheel System, Fenders and Exhaust Pipe, Electrical System, Troubleshooting
Manual Type:
Factory Service Manual
Format:
Likely Printed (standard for dealer manuals, though digital versions exist)
Engine Systems:
Fuel System (Carburetors, Jets, Fuel Lines), Lubrication System (Oil Pump, Oil Cooler, Oil Lines), Cooling System (Radiator, Fan, Hoses), Combustion System (Ignition Timing, Spark Plugs, Compression Testing), Engine Mechanical (Top End Rebuild, Bottom End Rebuild, Crankshaft, Connecting Rods, Piston Rings, Cylinders, Gaskets)
Drivetrain Systems:
Transmission System (Clutch Assembly, Gearbox, Shifting Mechanism, Bearings, Seals), Final Drive (Chain Drive, Sprockets)
Chassis Systems:
Front Wheel and Steering System (Tie Rods, Ball Joints, Steering Knuckles, Wheel Bearings, Suspension Components), Rear Wheel System (Swingarm, Axle, Bearings, Hub, Brake System)
Bodywork And Controls:
Fenders, Exhaust Pipe System, Handlebars, Levers, Cables
Electrical Systems:
Ignition System (CDI Unit, Stator, Ignition Coil), Lighting System, Battery Charging System, Wiring Diagrams
Maintenance Procedures:
Scheduled Maintenance (Fluid Changes, Filter Replacements, Chain Adjustments, Spark Plug Replacement), General Inspections, Lubrication Points
Repair Procedures:
Engine Overhaul, Transmission Rebuild, Carburetor Rebuilding and Tuning, Suspension Overhaul, Brake System Service, Electrical Component Diagnosis and Replacement
Troubleshooting:
Diagnostic Flowcharts, Common Problem Identification, Symptom-Based Troubleshooting for Engine, Drivetrain, Electrical, and Chassis Issues
Installation Procedures:
Engine Removal and Installation, Component Reassembly Steps
Technical Depth:
Comprehensive (Covers everything from basic maintenance to complete engine and drivetrain rebuilds, including detailed diagrams and specifications for dealer-level repairs).
File Format:
Not specified for digital, but assumed to be standard PDF if digital. If physical, it's printed paper.
Print Quality:
Dealer-quality (High-resolution diagrams, clear text, durable paper for workshop use).
Binding Type:
Likely Spiral-bound or Perfect-bound (Designed for lay-flat use in a workshop environment).
Paper Type:
Durable, possibly coated paper to withstand grease and workshop conditions.
Engine Type:
Liquid-Cooled, Reed Valve, 2-Stroke, Parallel-Twin
Bore X Stroke:
64 mm x 54 mm
Carburetion:
Dual Mikuni VM30SS
Ignition:
CDI (Capacitor Discharge Ignition)
Starting System:
Kick Starter
Lubrication:
Pre-mix (Fuel/Oil Mixture) or Separate Oil Injection System (depending on specific sub-model variants, but generally pre-mix for later models or aftermarket setups). The manual will detail the factory system.
Horsepower Estimated:
Approx. 50 HP (stock, may vary)
Torque Estimated:
Approx. 30-35 lb-ft (stock, may vary)
Fuel Type:
Unleaded gasoline (minimum 91 octane recommended)
Fuel Tank Capacity:
3.2 US gal (12 L)
Transmission Type:
Constant Mesh, 6-Speed Sequential
Clutch:
Wet, Multiple Disc
Drive Train:
O-ring sealed chain, 520 pitch
Final Drive Ratio:
Refer to manual for specific ratio (typically 3.00:1 or similar)
Features:
Quick-shifting mechanism, robust gear sets designed for high-performance use. Manual will detail clutch adjustment and gearbox inspection.
Ratings:
Not applicable for ATV crash ratings in the same manner as automobiles. Focus is on rider safety through proper operation and maintenance.
Active Features:
Disc Brakes (Front and Rear), Wide Tires for Stability, Handlebar Grips for Control.
Passive Features:
Roll Cage (N/A for ATVs), Seatbelt (N/A for ATVs). Emphasis on rider technique and wearing appropriate protective gear (helmet, gloves, boots, protective clothing) as per owner's manual and industry best practices.
Engine Oil Change:
Refer to manual, typically every 20-40 hours of operation or annually, using Yamaha's recommended two-stroke oil or equivalent.
Air Filter Cleaning:
Refer to manual, typically every 10-20 hours of operation or as needed based on riding conditions. Crucial for engine longevity.
Spark Plug Replacement:
Refer to manual, typically every 50-100 hours or annually. Specific NGK plug type will be in manual (e.g., BR9ES or similar).
Chain Adjustment And Lubrication:
Refer to manual, typically every 10-20 hours or after heavy use. Crucial for drivetrain performance and lifespan.
Coolant Flush:
Refer to manual, typically every 1-2 years or 100-200 hours.
Engine Oil:
Yamaha 2-stroke Outboard Oil or equivalent API-TC, JASO FD certified 2-stroke oil. The manual will specify exact type and ratio for pre-mix if applicable.
Coolant:
Ethylene Glycol based coolant, 50/50 mix with distilled water. Manual will specify capacity.
Transmission Oil:
Yamalube Gear Oil or equivalent SAE 80 API GL-4 transmission oil. Manual will specify capacity and part number.
Known Issues:
Common issues can include carburetor synchronization, clutch wear, aging electrical components, exhaust leaks, and reed valve wear. The manual is invaluable for diagnosing and addressing these.
Brand Heritage:
Yamaha has a long-standing reputation for producing high-performance and reliable off-road vehicles, including motorcycles and ATVs, dating back to the mid-20th century. The Banshee is a cornerstone of their sport ATV legacy.
Model Evolution:
The Banshee 350 (often referred to by its model code YFZ350) was first introduced in 1987. It underwent several updates over its production life, including aesthetic changes, minor engine tuning, and the incorporation of more modern suspension and braking components. The 2002 model represents a mature iteration of this iconic machine.
Production Period:
1987-2006 (in North America)
Manufacturing Location:
Japan (primary)
