Product Type:
Workshop Service Repair Manual
Coverage Years:
1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995
Engine Variants Covered:
200cc, 225cc, 250cc, 350cc
Target Audience:
Owners of Yamaha Moto-4 ATVs seeking to perform their own maintenance and repairs, as well as independent repair shops.
Value Proposition:
Provides comprehensive, DIY-friendly repair information to save on professional labor costs, covering a wide range of model years and engine sizes for the Moto-4 series.
Feature 1:
All-encompassing repair procedures for multiple engine sizes.
Feature 2:
Step-by-step instructions with clear pictures to simplify complex tasks.
Feature 3:
Instant digital delivery for immediate access to repair information.
Feature 4:
Lifetime ownership and printing flexibility.
Overall Coverage:
Complete service and repair procedures A-Z
Specific Systems Covered:
Engine, Transmission, Drivetrain, Suspension, Brakes, Electrical System, Fuel System, Cooling System, Chassis, Bodywork, Controls, Special Tools
Estimated Pages:
Extensive (Actual page count not specified, but implied to be comprehensive for all procedures A-Z)
Type:
Workshop Service Repair Manual
Delivery Format:
Downloadable Digital File (PDF)
Accessibility:
Printable (individual pages, chapters, or entire manual), Viewable on PC, MAC, Tablets, Smartphones
Engine Mechanical:
Full engine disassembly, inspection, repair, and reassembly for all specified engine displacements (200cc, 225cc, 250cc, 350cc). Includes cylinder head, valves, pistons, crankshaft, connecting rods, lubrication system, and cooling system.
Fuel System:
Carburetor overhaul, adjustment, and troubleshooting; fuel tank and lines inspection and maintenance.
Transmission Drivetrain:
Clutch operation, adjustment, and replacement; gearbox disassembly and repair; drive shaft and differential servicing (if applicable).
Electrical System:
Ignition system components (CDI, spark plugs, coil), starting system (starter motor, battery), charging system (generator/alternator), lighting system, and wiring diagrams for all model variations.
Suspension Steering:
Front and rear suspension component inspection, service, and replacement (shocks, springs, bushings); steering system overhaul and adjustment.
Braking System:
Brake system maintenance, fluid replacement, caliper overhaul, drum brake adjustment and service, and brake line inspection.
Chassis Frame:
Frame inspection, welding procedures (if applicable), and component mounting.
Bodywork Plastics:
Fender and body panel removal, installation, and minor repair procedures.
Maintenance:
Regular maintenance tasks, lubrication points, filter changes, tune-up procedures, and pre-ride inspections.
Troubleshooting:
Step-by-step diagnostic guides for common and complex issues across all systems, including fault finding charts and symptom analysis.
Repair:
Detailed instructions for disassembling, repairing, and reassembling all major and minor components of the ATV.
Rebuilds:
Comprehensive instructions for engine and transmission rebuilds, including specifications for critical clearances and torque values.
Adjustments:
Precise instructions for adjusting carburetor, clutch, brakes, and suspension components.
Depth:
In-depth technical information covering diagnostics, component specifications, tolerances, and repair procedures suitable for both DIY enthusiasts and professional technicians.
Type:
Air-cooled, 4-stroke, SOHC (Single Overhead Camshaft) - typical for this era and model line, varying by displacement.
Displacement Options:
200cc, 225cc, 250cc, 350cc
Horsepower Torque:
Specific figures vary by engine size. The manual would detail these for each variant, typically ranging from approximately 15-30 HP depending on displacement and tuning.
Carburetion:
Typically single carburetor per engine, with specific model and size dictated by displacement (e.g., Mikuni carburetors common).
Cooling Method:
Air-cooled.
Oil Type Capacity:
The manual would specify exact oil types (e.g., SAE 10W-30 or 10W-40 for air-cooled engines) and capacities for each engine variant, likely around 1-2 quarts.
Type:
Manual transmission with foot-shift (e.g., 5-speed or 6-speed depending on model and year).
Type:
Automatic or semi-automatic transmissions were not common on this specific Moto-4 line. If offered, it would be specified.
Drive Type:
Shaft drive or Chain drive (typically shaft drive for this model line).
Transmission Oil Type:
The manual would specify the correct transmission fluid type and viscosity, likely a gear oil or specific motorcycle transmission oil.
Wheelbase:
Varies by model and year. Specific dimensions would be detailed in the manual.
Ground Clearance:
Varies by model and year. Specific dimensions would be detailed in the manual.
Dry Weight:
Varies by model and year, typically in the range of 400-550 lbs for this class of ATV.
Front Tire Size:
Commonly 22x7-10 or 23x8-10. Specifics in manual.
Rear Tire Size:
Commonly 22x10-10 or 22x11-10. Specifics in manual.
Atv Safety Standards:
The manual would indirectly cover safety by detailing correct procedures and component specifications, adhering to industry standards of the time for ATV construction and operation.
Braking System Type:
Typically front hydraulic disc brakes and rear drum or hydraulic disc brakes, depending on model and year.
Lighting:
Headlights, taillights, and brake lights for visibility and signaling.
Features:
Basic instrumentation: speedometer (often optional/aftermarket), odometer, fuel gauge (if equipped), and indicator lights (neutral, oil, etc.). No advanced infotainment features.
Features:
None typical for this era of ATV. Focus is on mechanical and basic electrical systems.
Features:
No electronic connectivity features.
Oil Change Interval:
Typically every 1,000 miles or 6 months. Specific recommendations in the manual.
Air Filter Cleaning:
Regular inspection and cleaning, especially in dusty conditions, with replacement as needed. Interval typically every few hundred miles or as per manual.
Spark Plug Replacement:
As per mileage or time intervals, or based on performance. Manual would specify type and gap.
Valve Adjustment:
Periodically, often every 6,000-12,000 miles or as specified by the manual.
Engine Oil Grade:
Likely Yamalube 4 (or equivalent) SAE 10W-30 or 10W-40 API SE/SF/SG classification for air-cooled engines.
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid, as specified by Yamaha for the era.
Carburetor Issues:
Common issues include clogged jets due to fuel varnish, requiring cleaning and potential rebuilding.
Electrical Gremlins:
Aging wiring harnesses, corroded connectors, and failing CDI units can cause intermittent electrical problems.
Suspension Wear:
Worn bushings, seals, and shock absorbers are common on older ATVs, impacting ride quality and handling.
Starter Motor Failure:
Wear and tear on starter motors and associated solenoids can lead to starting problems.
Yamaha Atv Legacy:
Yamaha has a long and respected history in ATV manufacturing, pioneering many features and establishing itself as a leader in off-road recreation vehicles.
Moto4 Series:
The Moto-4 series was a popular line of ATVs from Yamaha during the late 1980s and early 1990s, known for their reliable performance and utility. It served as a predecessor to later Yamaha sport and utility ATV models.
Production Period:
The manual covers models produced from 1987 through 1995, a significant period for ATV development.
