2006 Yamaha Motorsports Apex RTX Owners Manual - Page 68
2006 Yamaha Motorsports Apex RTX Manual
Page 68 highlights
Replenishing the coolant 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, and 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. @ 1. Remove the top cover. (See pages 8-5-8-7 for removal procedures.) 2. Remove the coolant reservoir cap, fill the reservoir with the recommended coolant, and then install the cap. 3. Remove the coolant recovery tank cap, add the recommended coolant until it reaches the "COLD LEVEL" mark, and then install the cap. Recommended coolant: High quality ethylene glycol antifreeze containing corrosion inhibitors. Antifreeze and water mixing ratio: 60:40 Total amount: 6.0 L (5.28 Imp qt, 6.34 US qt) 1 "COLD LEVEL" mark 2 Coolant reservoir cap 3 Coolant recovery tank cap 8-15