2003 Yamaha Motorsports SXViper Mountain Owners Manual - Page 65
2003 Yamaha Motorsports SXViper Mountain Manual
Page 65 highlights
ESU00317 Cooling system Air bleeding the cooling system WARNING @ G G Do not remove the coolant reservoir cap when the engine is hot. Scalding hot fluid and steam may be blown out under pressure, which could cause serious injury. When the engine has cooled, place a thick rag or towel over the coolant reservoir cap, slowly rotate the cap counterclockwise to the detent. This procedure allows any residual pressure to escape. When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it. The cooling system must be bled of air if the coolant reservoir becomes empty, if air can be seen in the cooling system, or if there is a cooling system leak. Consult a Yamaha dealer. @ CAUTION: @ Operating the engine with an improperly bled cooling system can cause overheating and severe engine damage. @ 8-11