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Description
Technical Specifications
- MFG. Part Number 529-000-064
Vehicle Information
Polaris Mustang 398 Snowmobile (1970-1973)
The Polaris Mustang 398, a classic snowmobile produced between 1970 and 1973, was renowned for its robustness and simplicity. This iconic model was powered by a 398cc (often referred to as 400cc) two-stroke, fan-cooled, twin-cylinder engine, delivering approximately 27 horsepower at 6,500 RPM. It represented a reliable and capable option for snowmobile enthusiasts of that era. During its production run from 1970 to 1973, the Mustang 398 did not undergo major "generation" changes in terms of its platform. However, notable improvements were introduced: an electric start option became available for the 398cc engine by 1971, for both the Mustang and Charger models, continuing through 1972. It is important to note that the 398cc engine was also utilized in other distinct Polaris models, such as the Charger and TX, but these were not trims of the Mustang itself. FAQ:
Q: How can I ensure parts fit my 1970-1973 Polaris Mustang 398?
R: To guarantee part compatibility, please use our year and model selector on this page. This will help you find the specific components for your snowmobile.
Maintenance
| Component | Interval | Details |
| Engine Oil and Filter | Every 50 hours or 1,600 km, or annually | Perform after initial break-in service. For severe use, reduce interval by 50%. |
| Spark Plug | Inspect and replace as needed | |
| Air Filter | Inspect and replace as necessary | Ensure proper installation and clean ducts and screens. |
| Drive Belt | Inspect and replace as needed | |
| Coolant | Inspect fluid level and for leaks, add if needed | Inspect strength seasonally and pressure test the system yearly. |