6-9ESU00102Skis and ski runnersCheck the skis and ski runners for wear and damage.Replace if necessary.CAUTION:@Avoid scratching the skis when loading and unload-ing the snowmobile, when riding in areas with littleor no snow, or on sharp edges such as concrete,curbs, etc. This will wear or damage the skis.@ESU00103Steering systemCheck the handlebar for excessive free play:1. Push the handlebar up and down and back and forth.2. Turn the handlebar slightly to the right and left.If excessive free play is noticed, consult a Yamahadealer.ESU00378LightsCheck the lights.Replace any burned out bulbs.CAUTION:@Avoid using a scraper or hot water for cleaning theplastic lenses 1.@Ski runner wear limit a:8 mm (0.31 in)Ski wear limit b:24 mm (0.95 in)