Yamaha XT350M / XT350MC Owner's Manual (P/N LIT-11626-13-18)
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Yamaha Models Covered & Key Technical Specifications
Models: Yamaha XT350M, Yamaha XT350MC
Model Years: 1999
Technical Data:
- Engine: Air-cooled 4-stroke, DOHC, single cylinder
- Displacement: 346 cc
- Transmission: Constant-mesh 6-speed
- Fuel Capacity: 12.0 L (3.2 US gal)
- Spark Plug: D8EA, D9EA (NGK) or X24ES-U, X27ES-U (DENSO)
- Axle Nut Torque: 110 Nm (80 ft-lb)
- Spark Plug Torque: 17.5 Nm (12.5 ft-lb)
Yamaha Manual Features & Content Preview
- Covers the 1999 Yamaha XT350M and XT350MC motorcycles, detailing daily operation, safety protocols, and periodic maintenance schedules.
- Official Yamaha publication (P/N LIT-11626-13-18), first edition July 1999, spanning 100 pages.
- Features 40 detailed technical diagrams, maintenance charts, and precise torque specification tables.
- Documents critical fluid capacities, adjustment parameters, and baseline settings for the 346 cc single-cylinder engine.
Operating Procedures and Maintenance
You need reliable factory data to keep an older dual-sport running right. This manual breaks down the exact operational baseline for the XT350M and XT350MC. It goes beyond basic riding instructions to provide detailed pre-operation inspection checklists, proper warm-up cycles, and instrument function breakdowns. Handling fuel and electrical systems on vintage motorcycles carries inherent risks. Reviewing the manufacturer's safety and handling warnings prior to any maintenance is highly recommended to prevent personal injury or equipment damage. The periodic maintenance charts clearly outline the factory intervals for critical tasks. You will find exactly when to check valve clearances, inspect spark plug condition, and lubricate control cables.
Specification Highlights
Finding accurate mechanical values for late-90s Yamahas can be frustrating. This document consolidates those essential numbers. The 346 cc powerplant pairs with a constant-mesh 6-speed transmission, and the manual provides the exact settings required for proper operation. Axle nut torque is explicitly stated at 110 Nm (80 ft-lb) in the assembly data. Proper spark plug seating requires 17.5 Nm (12.5 ft-lb). When performing a standard oil change, you will need exactly 1.3 liters (1.4 US qt) of engine oil. It provides the hard numbers required to verify your setup matches factory specifications.
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