Hi

Ive got a DT125r 1998 and when i turn on the ignition the powervalve moves freely and lines up with the hole in the casing however when i start the bike its moved about 2cm clockwise and just stays there even when i rev it high it doesnt move .

Thanks Mark

When you turn on the ignition the valve will rotate anticlockwise to the fully open position i.e with the pulley U lined up with the hole .Now when you start the bike the valve should move clockwise to the low position. How high are you revving it as the valve won't start to open (moving anticlockwise) until about 5500 - 6000rpm and upwards. Tony.

When you turn on the ignition the valve will rotate anticlockwise to the fully open position i.e with the pulley U lined up with the hole .Now when you start the bike the valve should move clockwise to the low position. How high are you revving it as the valve won't start to open (moving anticlockwise) until about 5500 - 6000rpm and upwards. Tony.

Hi Tony

Thanks for the reply ive just found out the the valve on my bike isnt opening till 7k

Thanks mark