1970-1979 Ski-Doo Snowmobile Service Manual
1970-1979 Ski-Doo models technical guide detailing engine tune-up, periodic maintenance, troubleshooting, and electrical system repairs. Manual part number: 292.
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Ski-Doo Models Covered & Key Technical Specifications
Models: Ski-Doo Olympic, Ski-Doo TNT, Ski-Doo Blizzard, Ski-Doo Everest, Ski-Doo Scorpion, Ski-Doo Elan
Sub-models / Variants: 250, 250 E, 250 Twin, 250 Deluxe, 250SS, 300, 300T, 300 Twin, 300SS, 335, 340, 340E, 399, 440, 440E, 440 Plus, 440 L/C, 6500, 7500, 9500, 5500, T'NT F/A, T'NT R/V, T'NT 292, T'NT 294
Build Years: 1970–1979
Technical Data:
- Engine idle speed: 1,800–2,200 rpm (configuration dependent)
- Spark plug gap: 0.020 in. (0.51 mm)
- Cooling system temperature: 110°F (43°C)
- Drive belt deflection: 1/2 in. (1.3 cm)
- Fuel/oil mixture ratio (1970–1972): 20:1
- Fuel/oil mixture ratio (1974–1979): 50:1
- Compression pressure: 120–175 psi (8.4–12.30 kg/cm²)
- Ignition system voltage: 12 V
Ski-Doo Manual Features & Content Preview
Technical Scope for the 1970–1979 Ski-Doo Snowmobile Service Manual
- Covers 1970–1979 Ski-Doo Olympic, TNT, Blizzard, Everest, Scorpion, and Elan snowmobiles, including single and twin-cylinder 2-cycle engine variants
- Third-party publication, Copyright 1970–1979 service documentation
- Contains 12 distinct chapters of technical data, including ignition timing tables, carburetor specifications, and track tensioning charts
- Delivered as a direct download the moment payment clears
- Indexed PDF search covers every chapter and appendix
- Stored against your account so you can retrieve it after a hard-drive loss
- No DRM restrictions on the print function
- This 210-page archival reference includes the specialized timing specifications and carb tuning charts required for the Rotax engine series found in these vintage sleds
Mechanical and Systems Documentation
The 1970–1979 Ski-Doo snowmobile service manual provides a structured analysis of the entire 1970–1979 Ski-Doo model lineup, detailing maintenance and overhaul procedures for the 2-cycle engine series, fuel delivery systems, and drivetrain assemblies. The text explores machine identification protocols, periodic maintenance schedules, and logical troubleshooting sequences for engine starting, performance, and electrical faults. Sections covering suspension, steering, and braking systems are segmented by model, ensuring owners have the necessary data for track alignment and suspension ride adjustments.
Engine and Specification Highlights
The documentation provides extensive technical data, including piston-to-cylinder clearance limits, ignition timing specifications in degrees BTDC, and carburetor jetting configurations. Torque values are documented for primary fasteners, including cylinder head nuts, magneto components, and engine mounts. For a deeper understanding of how factory workshop documentation is structured, the guide provides exploded-view diagrams of the cooling fan assembly, crankshaft, and typical carburetor types. The 1970–1979 Ski-Doo snowmobile service manual remains a primary reference for the 1970–1979 Ski-Doo fleet, covering essential fluid capacities, timing data, and component wear limits for the long-term preservation of these vintage winter machines.
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