Quick and easy way to change 4 wheeler / 400ex valve seals. No more smokey 400ex!

Quick and easy way to change valve seals in a wheeler. This is an early 400ex head. Tools you need will be a magnet a wrench and a screwdriver. A friend to help will make it much easier to reinstall the holding clips as well. How to change Valve seals. Thanks for watching please like and subscribe.