Originally posted by poncho62
If you don't trust the "air" method or don't have a compressor, you can use nylon rope. Pull the plugs, put the end of the rope in the plug hole and then turn the motor so that the rope wedges against the bottom of the valves. Change the springs, turn the piston down and pull the rope out. Don't use the yellow rope, it sheds to many fibres. Use the white flexible rope.

that is cool !!!! i'll try it that way ! thank's man ... i need to use the "search"