Description
This 81 page, 1969 Yamaha L5T Trailmaster 100 Motorcycle Service Manual is a reproduction of the original, out of print manual. This service manual provides detailed service information, step-by-step repair instruction and maintenance specifications for 1969 Yamaha L5T Trailmaster 100 Motorcycles. Contains complete information on servicing your machine including wiring diagram, special tools and troubleshooting information. A great resource to any 1969 Yamaha L5T Trailmaster 100 Motorcycle restoration project.
Table of Contents
General
Features
External View
Specifications
Performance Curves
Tools and Instruments for Shop Service
Yamaha Autolube
What is Yamaha Autolube?
Features of Yamaha Autolube
Handling the Oil Pump
Engine
Removing the Engine
Cylinder Head
Cylinder
Piston Pin
Piston Rings
Piston
Crankcase Cover (R)
Clutch
Primary Drive Gear
Kickstarter
Shifting Mechanism
Rotary Valve
Drive Sprocket
Dividing the Crankcase
Transmission Assembly
Crankshaft
Bearings and oil Seals
Carburetor
Air Cleaner
Transmission Oil
Chassis
Front Wheel
Rear Wheel
Front Fork
Rear Cushion
Steering Head
Electrical Equipment
YAMAHA 100L5 -T Electrical Equipment
Main Components
Connection Diagram
Starter Dynamo
Regulator (Voltage Regulator)
Ignition Coil
The 1969 Yamaha L5T Trailmaster 100 Motorcycle, also known simply as the Yamaha L5T, was a small dual-sport motorcycle produced by Yamaha. This particular model was part of Yamaha’s Trailmaster series and was designed for both on-road and off-road riding. While it is considered a classic motorcycle today, it’s important to note that vintage motorcycles like the L5T may have common problems related to their age and maintenance history. Here’s some information about the motorcycle and potential issues:
Engine: The 1969 Yamaha L5T Trailmaster 100 was equipped with a 100cc, two-stroke, single-cylinder engine. Two-stroke engines of this era were known for their simplicity and lightweight design.
Dual-Sport Design: The L5T was designed to be versatile, suitable for both on-road and off-road riding. It typically featured a high exhaust pipe, knobby tires, and suspension designed to handle rough terrain.
Vintage Status: The L5T is considered a vintage motorcycle today, and finding original parts and components can be challenging. Restoring or maintaining one may require some effort and resourcefulness.
Maintenance: As with any vintage motorcycle, regular maintenance is crucial to ensure it runs smoothly. This includes checking and cleaning the carburetor, maintaining the two-stroke oil mix, inspecting the electrical system, and keeping the engine well-lubricated.
Common Problems and Considerations:
Carburetor Issues: Two-stroke engines like the one in the L5T are known for their reliance on carburetors. Carburetor problems such as clogs, dirty jets, or fuel delivery issues may be common and can affect engine performance.
Electrical Problems: Wiring, connectors, and electrical components can deteriorate over time, leading to issues with lights, ignition, and other electrical functions.
Rust and Corrosion: Vintage motorcycles may have issues related to rust and corrosion on various metal parts, including the frame, exhaust system, and fuel tank.
Availability of Parts: Finding original or replacement parts for a vintage motorcycle like the L5T can be challenging. Some parts may be scarce or expensive, so enthusiasts often need to search for alternatives or engage in restoration projects.
Engine Wear: Over time, the engine may experience wear and tear, leading to decreased compression, reduced power, or oil leaks.
Tires and Suspension: If the motorcycle has been used off-road, the tires and suspension components may have suffered wear and damage.
It’s important to note that the specific condition of any vintage motorcycle, including the Yamaha L5T Trailmaster 100, can vary widely based on factors such as maintenance, storage, and previous use. Enthusiasts and collectors often enjoy working on and restoring vintage motorcycles like this one, but it’s essential to be prepared for potential challenges related to parts availability and maintenance. Having the service manual is a great start to caring for this fine vintage motorcycle.
