1983-1988 Yamaha Enticer 340 & Excel III Snowmobile Service & Repair Manual

• Covers 1983–1988 Yamaha Enticer 340 and Excel III snowmobiles, specifically the EC340G and ET340TG variants equipped with the fan-cooled twin-cylinder power plant
• Features 14 exploded-view diagrams detailing engine, powertrain, suspension, and chassis assemblies
• Delivers factory-recommended maintenance intervals and precise overhaul specifications

Component and System Walkthrough

Spanning 123 pages, this reference material breaks down the functional systems of these classic two-stroke snowmobiles. The chapters organize information logically for the workshop environment. It pairs general inspection requirements with deep dives into engine teardowns and drivetrain maintenance. Technicians will find descriptive sections on carburetor tuning, chassis adjustments, and electrical system diagnostics. Working on vintage snowmobiles involves inherent mechanical and chemical risks, making it vital to review the factory safety protocols outlined in the introductory chapters before initiating any diagnostic work. By presenting complex assemblies through clear technical descriptions, the text provides a thorough look at how Yamaha originally structured their workshop documentation.

Technical Specification Highlights

Accurate data is critical when tackling a rebuild. This documentation outlines specific tolerances, noting a standard cylinder bore of 60 mm alongside a strict 0.05 mm taper limit. Crankshaft deflection limits are set between 0.03 and 0.04 mm depending on the exact measurement point. For fuel delivery, the tuning charts highlight the standard #240 main jet for sea-level operation. Drivetrain specs include a secondary clutch spring pre-load set to 160 degrees and a chain case oil capacity of 0.4 liters. These baseline figures provide the necessary metrics for returning the chassis and powertrain to their original operational standards.