SPX Cross Shaft
1039-1754 (MFG #: SM-04147)
$20.42
Sale price
$20.42
Regular price
$20.95
Sale
-2%
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SPX Cross Shaft for Moto-Ski Sonic 340 Snowmobile
SPX Cross Shaft for Moto-Ski Sonic 340 Snowmobile
$20.42
Sale price
$20.42
Regular price
$20.95
Sale
-2%
SKU:1039-1754
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Description
Technical Specifications
- MFG. Part Number SM-04147
Vehicle Information
Moto-Ski Sonic 340 Snowmobile (1975-1978)
The Moto-Ski Sonic 340, produced from 1975 to 1978, was a popular two-stroke snowmobile known for its spirited performance. Throughout its production, it was powered by a Rotax twin-cylinder, free-air cooled engine, with displacement generally cited as 337cc or 340cc. This model was often offered in a "TS" trim, highlighting its sport-touring capabilities.
A significant shift occurred in 1976 after Bombardier acquired Moto-Ski in March 1975. From 1976 onwards, Moto-Ski models, including the Sonic 340, were designed by Bombardier and often shared components with Ski-Doo models, essentially becoming orange versions. The engine displacement also saw a slight change, moving from 340cc in 1975-1976 to 337cc from 1977. The 1978 Sonic 340 was particularly notable for its lightweight design, aluminum tunnel, and fiberglass hood, with only about 450 units produced, making it a rare collector's item.
Q: How do I ensure this part fits my specific Moto-Ski Sonic 340?
A: To guarantee compatibility, please use the year and edition selector at the top of this page.
Maintenance
| Component | Interval | Details |
| Oil (Two-Stroke Injection Oil) | Before every ride | Check reservoir level. Use high-quality 2-stroke injection oil rated TC-W3 or manufacturer-specific oil. |
| Oil Filter | Annually or every 100 hours | If present in the injection system, check and potentially replace. |
| Belt (Drive Belt) | Inspect every 50 hours or before every ride; Replace every 2 400 to 4 800 km | Inspect for glazing, fraying, or cracking. Replace immediately if damaged. Clean clutch faces annually. |
| Spark Plug | Annually or at the start of each season | Ensure proper gapping. |
| Air Filter | Annually or at the start of each season | Clean or replace. Check airbox for debris regularly. |
| Coolant | Check pre-season and regularly; Change every two years | Maintain level between "min" and "max". Inspect hoses, routing, and clamps. |
| Chaincase Oil | Check pre-season and every 50 hours; Change annually or every 1 500 km | Flush chaincase, inspect chain and sprockets, adjust chain tension. |
These intervals are general guidelines for vintage snowmobiles. For precise information, consult the original owner's manual for your specific model year.