2008 Yamaha Motorsports RS Venture GT Owners Manual - Page 63

Periodic maintenance Checking the brake fluid level EWS00460 G WARNING Be careful that water does not enter the master cylinder when refilling. Water will significantly lower the boiling point of the fluid and may result in vapor lock. If the brake fluid level goes down, consult a Yamaha dealer. ECS00550 G All oil seals of the master cylinder and caliper cylinder The brake hose ESU12141 Skis and ski runners Check the skis and ski runners for wear and damage. Replace if necessary. CAUTION: Brake fluid may deteriorate painted surfaces or plastic parts. Never spill any fluid. If any is spilled, clean it up immediately. Place the snowmobile on a level surface. Check that the brake fluid is above the lower level and replenish when necessary. 1. Ski runner wear limit 1. Lower level 1. Ski wear limit Specified brake fluid: DOT 4 Changing the brake fluid EWS00470 Ski runner wear limit: 8 mm (0.31 in) Ski wear limit: RST90 24 mm (0.94 in) RST90GT 12 mm (0.47 in) ECS00560 WARNING Make sure that the brake fluid and the above parts are replaced by a Yamaha dealer. Brake fluid replacement is necessary when the following components are replaced during the periodic maintenance or if they are damaged or leaking. CAUTION: Avoid scratching the skis when loading and unloading the snowmobile, when riding in areas with little or no snow, or on sharp edges such as concrete, curbs, etc. This will wear or damage the skis. 57