The Yamaha CF300K Inviter, produced between 1987 and 1990, represents a versatile trail snowmobile from a manufacturer renowned for its reliable and performance-oriented machines. This model, along with its variants CF300L, CF300M, CF300N, and CF300P, typically features a 300cc class, air-cooled, two-stroke parallel-twin engine, likely equipped with dual carburetors and a CDI ignition system. Its design prioritizes a balance of comfort and capability for recreational riding, embodying Yamaha's commitment to engineering quality and innovation in the snowmobile market during the late 1980s.
This comprehensive workshop service repair manual provides detailed instructions for the maintenance, diagnostics, repair, and tuning of the 1987-1990 Yamaha CF300K Inviter. It covers all essential systems, including the engine, cooling, carburetion, power train, chassis, and electrical systems, offering step-by-step procedures, high-quality diagrams, torque specifications, and troubleshooting charts. Designed for both DIY enthusiasts and professional mechanics, this manual is an indispensable resource for ensuring the longevity, optimal performance, and safe operation of your snowmobile.
Model Variants:
CF300L, CF300M, CF300N, CF300P
Engine Code:
Likely a 300cc class Yamaha two-stroke twin
Target Audience:
Owners of 1987-1990 Yamaha CF300K Inviter snowmobiles seeking to perform maintenance, repairs, or understand their machine's mechanics. Ideal for DIYers.
Value Proposition:
Provides essential technical data and procedures to maintain and repair a vintage snowmobile, saving costs associated with professional service and extending the vehicle's lifespan. Instant download convenience.
Manual Features:
Instant download, printable pages, comprehensive coverage, detailed diagrams, English language, PDF format, compatibility with Windows and Mac. Promotes self-sufficiency in snowmobile maintenance.
Manual Coverage Summary:
Comprehensive service, repair, and tuning for the 1987-1990 Yamaha CF300K Inviter snowmobile.
Estimated Page Count:
Estimated 150-300 pages (typical for this era and detail level)
Manual Type:
Workshop Service Repair Manual (Downloadable)
Systems Covered List:
General Information, Periodic Inspections and Tuning Adjustments, Engine, Cooling System, Carburetion, Power Train, Chassis, Electrical System.
Procedures Included List:
Maintenance, diagnostics, repair, disassembly, reassembly, adjustments, troubleshooting, component replacement, electrical system testing, carburetion tuning, clutch service, suspension adjustment.
Technical Depth:
Detailed step-by-step instructions, high-quality diagrams, torque specifications, wiring diagrams, troubleshooting charts, and component specifications suitable for DIY enthusiasts and professional mechanics.
Print Quality:
Printable pages with clear text and diagrams.
Binding Type:
Digital Download (PDF)
Paper Type:
N/A (Digital)
Engine Type:
Two-stroke, parallel-twin cylinder (typical for Yamaha 300cc class snowmobiles of this era)
Estimated Horsepower:
Approximately 35-45 HP (typical for a 300cc class two-stroke from this period, specific figures would be in the manual)
Carburetor Type:
Likely dual Mikuni VM series carburetors (e.g., VM34 or similar), requiring precise synchronization and jetting.
Cooling Method:
Air-cooled (common for snowmobiles of this class and era)
Ignition Type:
CDI (Capacitor Discharge Ignition) with potentially dual spark plugs per cylinder for improved combustion.
Drive System:
CVT (Continuously Variable Transmission) with a primary clutch (drive clutch) and secondary clutch (driven clutch).
Gear Reduction:
Chain drive to the track with integrated gear reduction ratios specific to snowmobile performance.
Clutch Service:
Manual covers clutch inspection, belt replacement, spring and roller service, and alignment.
Track Width:
Standard snowmobile track width (e.g., 15-20 inches, specific to model).
Dry Weight:
Estimated 400-450 lbs (typical for this class and era).
Braking System:
Hydraulic disc brake on the drive shaft, activated by handlebar lever.
Throttle Safety:
Handlebar-mounted throttle with a safety detent or thumb warmer. Kill switch for engine shutdown.
Dashboard Features:
Basic dashboard with speedometer, engine temperature/warning lights, and possibly a trip meter. Minimal electronic features common for the era.
Routine Maintenance Schedule:
The manual will detail specific intervals for spark plug inspection/replacement, chain case oil changes, clutch cleaning, and general lubrication. Typically, basic checks after every ride, with more in-depth service every 100-250 hours or annually.
2 Stroke Oil Type:
Yamaha recommends specific JASO FD or API TC certified 2-stroke oil for premix or oil injection systems. The manual will specify the exact type and viscosity.
Chaincase Oil Type:
Likely a gear oil, SAE 80W-90 or similar. Specific capacity and type will be in the manual.
Common Wear Items:
Potential issues in this era can include worn drive belts, clutch wear (rollers, weights, springs), carburetors requiring cleaning/re-jetting due to fuel quality, aging fuel lines, and stator/CDI ignition component reliability. The manual will guide diagnosis.
Carburetor Tuning:
Manual covers idle speed, mixture screw adjustment, and jetting based on altitude and temperature for optimal performance and engine longevity.
Spark Plug Recommendation:
The manual will specify the correct spark plug type (e.g., NGK BR9ES or equivalent) and gap. Correct spark plugs are crucial for two-stroke engine performance.
Yamaha Snowmobile Legacy:
Yamaha has a long history in snowmobile manufacturing, known for reliable and performance-oriented machines, often incorporating innovative technologies.
Inviter Series:
The Inviter series was often positioned as a versatile trail sled, balancing comfort and performance for recreational riding. The CF300K represents a specific iteration within this lineage.
Production Era:
Late 1980s, a period when snowmobile technology saw advancements in engine efficiency, suspension, and rider comfort.
Manual Utility:
Highly regarded by owners for providing the necessary technical information to maintain and repair vintage Yamaha snowmobiles, preserving their usability and value.
