hillbilly
New member
Want to double check all power valve parts going back in right positions when re-assembling! Didn't strip it and not sure how reliable gas gas drawings are.
Flapper valve? side with ridge along curved end facing up/inwards?
Drum valves across transfer ports, slot/cut out towards back?
What position should flap and valve drums be in when all back together and engine not running? Assume flap down in lower position (reducing size of port)? Mine doesn't come down far, about 15mm,is that right.
Seen that the plate that turns assembly has to be up against head of screw when at rest, basically turned anti clockwise as far as it will go.
When power valve is actuated assume flapper goes right up to fully open exhaust port and drums turn to open small ex transfer ports to exhaust main port.
gas gas drawings show actuator plate at top of control rod facing opposite way to how mine is, cant see how it could go any other way round than how mine is though as the 2 slight 'cams' on plate that stop against screw head have to be facing forward to do so.
cheers in advance.
simon
Flapper valve? side with ridge along curved end facing up/inwards?
Drum valves across transfer ports, slot/cut out towards back?
What position should flap and valve drums be in when all back together and engine not running? Assume flap down in lower position (reducing size of port)? Mine doesn't come down far, about 15mm,is that right.
Seen that the plate that turns assembly has to be up against head of screw when at rest, basically turned anti clockwise as far as it will go.
When power valve is actuated assume flapper goes right up to fully open exhaust port and drums turn to open small ex transfer ports to exhaust main port.
gas gas drawings show actuator plate at top of control rod facing opposite way to how mine is, cant see how it could go any other way round than how mine is though as the 2 slight 'cams' on plate that stop against screw head have to be facing forward to do so.
cheers in advance.
simon
