2001 Yamaha PW50(P) Owner's Service Manual (P/N 5P G-28199)
Yamaha Models Covered & Key Technical Specifications
Models: Yamaha PW50(P)
Model Years: 2001
Technical Data:
- Engine displacement: 49 cm³
- Bore x Stroke: 40.0 mm × 39.2 mm
- Compression ratio: 6.0:1
- Fuel tank capacity: 2.0 L
- Engine oil tank capacity: 0.3 L
- Transmission oil capacity (periodic change): 0.3 L
- Transmission oil capacity (overhaul): 0.35 L
- Tire pressure (front and rear): 100 kPa (15 psi)
- Spark plug (standard): BP4HS (NGK) or W14FP-L (DENSO)
- Spark plug torque: 20 Nm (14 ft-lb)
- Idle speed: 1,650–1,750 r/min
- Steering head bolt tightening torque: 32 Nm (23 ft-lb)
- Front wheel axle nut torque: 40 Nm (29 ft-lb)
- Rear wheel axle nut torque: 60 Nm (43 ft-lb)
Yamaha Manual Features & Content Preview
- Official Yamaha OEM publication (form number 5P G-28199) for the 2001 PW50(P) minibike.
- 161 pages featuring technical illustrations, exploded-view diagrams of key components, and specification tables for the 5P-series model.
- Documents specific setup, maintenance parameters, engine oil, and transmission requirements for the 49cc platform.
Operational and Maintenance Overview
This official documentation serves as the primary reference for workshop maintenance and inspection of the youth-focused PW50(P). Mechanics can quickly locate essential frame and engine serial numbers. The manual breaks down control functions in detail. You get clear operational guidelines for the ignition switch, fuel cock, starter lever, and kick starter mechanism. Need to plan a service routine? Comprehensive schedules define precise periodic lubrication and inspection tasks. These range from basic transmission oil changes to air filter service and throttle cable tensioning, saving valuable diagnostic time in the shop.
Technical and Performance Specifications
Factory performance tuning data provides exact adjustments for jet needle positions and idle speed. It also outlines recommended carburetor configurations for standard sea-level conditions. Fastener security is critical for safe operation on any youth bike. Always verify torque values during assembly to ensure mechanical integrity. The chassis data lists exact requirements, such as 60 Nm (43 ft-lb) for the rear axle nut and 32 Nm (23 ft-lb) for the steering head bolt. Wear limits are clearly defined. Technicians will find clutch shoe lining thickness specs and piston ring end gap clearances for the 49cc monocylinder. Relying on these original guidelines ensures the bike meets factory safety standards before returning to active riding use.
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