Yamaha VK10Y 2009 RS Viking Owner's Manual
![Yamaha VK10Y 2009 RS Viking manual cover](/images/8b0ac89f9be916ecae87a655/thumbs/thumb175x175.webp)
The Yamaha VK10Y 2009 RS Viking requires unleaded gasoline with a minimum octane rating of 87.
For optimal performance, the engine oil should be changed every 1,500 miles or once a year, whichever comes first.
To adjust the track tension, lift the rear of the snowmobile, loosen the rear axle bolts, adjust the tension bolts evenly on both sides, and ensure there is a 1.5-inch sag at the midpoint of the track.
Check the battery voltage and connections, ensure the fuel system is functioning, inspect the spark plugs, and verify that the kill switch is in the correct position.
Use a high-quality ethylene glycol-based antifreeze that is specifically designed for aluminum engines.
Install a carburetor heater kit or use a fuel additive designed for cold weather to prevent carburetor freezing.
Inspect the drive belt every 500 miles or after every major ride to ensure there are no signs of wear or damage.
Regularly check the brake fluid level, inspect brake pads for wear, and ensure the brake rotor is free of debris and damage.
Stop the engine immediately, allow it to cool down, check the coolant level, inspect the radiator for blockages, and ensure the fan is operational.
Maintain proper tire pressure, regularly clean the air filter, use high-quality fuel, and avoid aggressive acceleration to improve fuel efficiency.