Market Position:
Entry-level urban scooter, popular for its reliability and ease of use.
Competitive Analysis:
Competed with other 50cc scooters from manufacturers like Honda (e.g., Dio, Elite), Suzuki (e.g., Let's), and Kymco.
Key Features:
Lightweight design, automatic transmission (CVT), fuel-efficient engine, practical for city commuting.
Coverage Areas:
Service, Repair, Maintenance
Page Count:
Unknown (not specified in product description, but service manuals are typically extensive)
Manual Type:
Service Repair Maintenance Manual
Format:
Likely Print (implied by 'handy reference' and common for this type of product)
Systems Covered:
Engine, Fuel System, Ignition System, Lubrication System, Transmission (CVT), Chassis, Suspension, Brakes, Electrical System, Bodywork, Troubleshooting, Specifications
Procedures Included:
Routine Maintenance, Component Inspection, Disassembly and Reassembly, Adjustment Procedures, Diagnostic Routines, Repair Techniques, Electrical Wiring Diagrams
Technical Depth:
Comprehensive (designed for mechanics, implies detailed procedures, torque specifications, and diagnostic information)
File Format:
Not Applicable (assuming print)
Print Quality:
Professional (typical for factory service manuals)
Binding Type:
Likely Spiral-bound or Perfect-bound (for ease of use during repairs)
Paper Type:
Durable, high-quality paper suitable for workshop environments
Engine Type:
Air-cooled, 2-stroke, single-cylinder
Displacement:
49cc (likely)
Bore X Stroke:
Approx. 39.0 mm x 41.4 mm (typical for 49cc 2-stroke)
Compression Ratio:
Approx. 7.2:1
Ignition System:
CDI (Capacitor Discharge Ignition)
Starting System:
Electric Start and Kick Start
Horsepower:
Approx. 5.5 - 6.0 HP @ 6500 RPM (estimated)
Torque:
Approx. 4.5 - 5.0 ft-lbs @ 6000 RPM (estimated)
Carburetor Model:
Likely a Mikuni VM Series (e.g., VM15-SH)
Fuel Type:
Unleaded Gasoline (minimum 87 octane recommended)
Fuel Tank Capacity:
Approx. 4.0 Liters (0.88 UK gal, 1.06 US gal)
Oil Type 2 Stroke Mix:
Yamaha Premium 2-stroke oil or equivalent API TC, JASO FD rated
Overall Length:
Approx. 1710 mm (67.3 in)
Overall Width:
Approx. 655 mm (25.8 in)
Overall Height:
Approx. 1020 mm (40.2 in)
Wheelbase:
Approx. 1225 mm (48.2 in)
Dry Weight:
Approx. 75 kg (165 lbs)
Curb Weight:
Approx. 80 kg (176 lbs) (estimated, including fluids)
Storage Compartment:
Under-seat storage for helmet or small items
Safety Ratings:
Not applicable in a standardized automotive crash-test sense, but designed for stability and braking common to scooters of its class.
Active Features:
Good maneuverability, responsive brakes.
Passive Features:
Headlight, taillight, turn signals, brake light, horn.
Infotainment Features:
Basic analog speedometer, fuel gauge (if equipped), odometer, and indicator lights.
Driver Assistance Features:
None (typical for this era of scooter).
Connectivity Features:
None.
Service Intervals General:
Initial service after 1000 km (600 miles), then every 5000 km (3000 miles) or annually. Specific intervals for oil changes, spark plug, air filter, and drive belt checks are detailed in the manual.
Oil Change Interval:
Every 3000 km (1800 miles) or annually (for the transmission/gear oil).
Air Filter Cleaning Interval:
Every 1000 km (600 miles), clean and re-oil if necessary.
Spark Plug Replacement Interval:
Every 3000 km (1800 miles) or as needed, check gap at 1000 km.
Drive Belt Inspection Interval:
Every 5000 km (3000 miles) for wear and tension.
Transmission Oil Type:
Yamaha Hypoid Gear Oil SAE 80W-90 or equivalent API GL-4
Transmission Oil Capacity:
Approx. 0.10 Liters (0.02 UK gal, 0.03 US gal)
Coolant Type:
Not applicable (air-cooled engine)
Brake Fluid Type:
DOT 3 or DOT 4 hydraulic brake fluid (for drum or disc brakes, depending on specific Razz model variant)
Known Issues:
Common issues can include wear on the CVT belt and rollers, carburetor clogging due to infrequent use or poor fuel quality, and occasional electrical connector issues. The manual will detail diagnostics for these.
Carburetor Cleaning:
Regular cleaning of the carburetor's main jet and pilot jet is recommended to prevent performance issues.
Cv T Component Wear:
Rollers and drive belt can wear over time, affecting acceleration and top speed. The manual provides inspection and replacement procedures.
Brand Heritage:
Yamaha Motor Company, established in 1955, is renowned for its high-performance motorcycles, musical instruments, and marine products. In the scooter segment, Yamaha has a long history of innovation and popular models.
Model Evolution:
The Razz (often known as the Jog in many markets) was a successful line of 50cc scooters, with continuous updates and variations released by Yamaha over the years. The 1998 model represents a specific iteration within this popular series.
Production Period:
The Yamaha Razz/Jog series was produced for many years, with the specific 1998 model being part of the late 1990s generation.
