Segment:
Entry-level to mid-range recreational ATV
Target Audience:
Enthusiasts seeking a reliable, user-friendly three-wheeled ATV for recreational use
Competitors:
Honda ATC series, Suzuki Alt series, Kawasaki KLT series
Unique Selling Points:
Three-wheel configuration, Yamaha reliability, relatively simple mechanics
Covered Years:
1982, 1983, 1984, 1985
Covered Models:
Tri-Moto 175 (YT175)
Estimated Pages:
Variable (typically 200-500+ for this era of service manual, file size up to 5GB mentioned)
Type:
Service Repair Workshop Manual
Additional Types:
Factory Manual, Troubleshooting Guide, Repair Guide
Delivery Method:
Digital Download (Instant)
File Types Included:
PDF, ZIP, RAR, EXE (potential for compressed archives)
Engine:
Complete overhaul, diagnosis, repair, tuning, carburetor, ignition, cooling, lubrication
Transmission:
Clutch, gearbox, drive shaft, lubrication, repair, diagnosis
Chassis:
Frame, suspension (front and rear), steering, wheels, tires
Brakes:
Front and rear brake system inspection, service, repair, fluid replacement
Electrical:
Wiring diagrams, lighting, ignition system, charging system, starter, battery maintenance
Fuel System:
Fuel tank, fuel lines, fuel filter, carburetor (detailed service and adjustment)
Bodywork:
Fenders, plastics, seat, handle bars, controls
Maintenance:
Regular maintenance, lubrication, filter changes, adjustments, inspections
Troubleshooting:
Diagnostic flowcharts, common problems and solutions, fault finding
Repair:
Step-by-step repair instructions for all major components and systems
Rebuild:
Engine, carburetor, and transmission rebuild procedures
Restoration:
Guidance for bringing an older unit back to operational status
Depth:
Comprehensive (from basic maintenance to complete engine rebuilds)
User Level:
DIY owners, home mechanics, professional technicians
Printability:
Printable (no restrictions mentioned)
Searchability:
Likely searchable text within PDF, depending on original source quality
Illustrations:
Clear, step-by-step illustrations and exploded views
Binding:
Not Applicable (Digital Download)
Paper Quality:
Not Applicable (Digital Download)
Engine Type:
2-stroke, air-cooled
Displacement:
171cc (approximate based on model name)
Bore X Stroke:
Specific data would be in the manual, likely around 64mm x 54mm
Cylinder Layout:
Single-cylinder
Horsepower:
Approximately 15-18 HP (typical for this class and era)
Torque:
Not readily available, but optimized for low-to-mid range ATV use
Carburetor Type:
Mikuni VM Series (likely 28mm or 30mm)
Fuel Type:
Unleaded gasoline (2-stroke oil pre-mix required)
Ignition System:
CDI (Capacitor Discharge Ignition)
Lubrication System:
Premix (oil mixed with fuel)
Piston Rings:
2-ring design typical
Cylinder Head:
Desmo-type (single piece cylinder and head common in this era)
Length:
Approximately 1800 mm (70.9 in)
Width:
Approximately 1030 mm (40.6 in)
Height:
Approximately 1040 mm (40.9 in)
Wheelbase:
Approximately 1230 mm (48.4 in)
Dry Weight:
Approximately 150 kg (331 lbs)
Curb Weight:
Not specified, but likely around 160-170 kg
Front Tire Size:
AT22 x 7-10 (or similar)
Rear Tire Size:
AT22 x 10-10 (or similar)
Wheel Type:
Stamped steel
Front Suspension Type:
Independent trailing arm with spring/damper units
Rear Suspension Type:
Swingarm with single shock absorber
Oil Change Interval:
Every 1000-1500 km or annually (refer to manual for precise interval based on usage)
Air Filter Cleaning:
Regularly, especially in dusty conditions (as per manual recommendations)
Spark Plug Replacement:
Every 2000-3000 km or as needed
Coolant Type:
Air-cooled, no coolant required
Brake Fluid Type:
DOT 3 or DOT 4 brake fluid (confirm specific type in manual)
2 Stroke Oil Type:
High-quality 2-stroke motorcycle oil (e.g., Yamalube 2, JASO FD or FB rated)
Common Wear Items:
Carburetor jets, fuel lines, clutch components, ignition coils, suspension bushings
Typical Problems:
Carburetor gumming due to stale fuel, ignition system failures, brake wear, transmission shifting issues if not maintained
Safety Considerations:
Tendency to roll over if ridden aggressively or on uneven terrain, due to the three-wheel design and lack of stability control.
Manufacturer History:
Yamaha Motor Company, a Japanese manufacturer known for motorcycles, marine products, and musical instruments, with a long history of innovation in powersports.
Tri Moto Lineage:
Part of Yamaha's successful early line of three-wheeled ATVs, building on the success of the earlier YT125 model.
Market Impact:
The Tri-Moto line was popular for its versatility in various terrains, though three-wheelers eventually phased out due to safety concerns compared to four-wheel designs.
Manufacturing Location:
Japan (typical for Yamaha powersports of this era)
