Posted: Tue Sep 26, 2017 8:28 am
Hi, hoping someone has seen this before, as your club sounds like Rotax experts... I have successfully upgraded my 09 Rotax with the EVO uogrades, and is a beast up to 15000rpm. I also have a 2010 motor, and cannot get it past 13200. I have the latest update kits and brackets, correct lengths of new solenoid hoses, and the solenoid is mounted with the silver spout facing upwards etc... Here is the problem... the power valve remains open when starting, and only around 9000rpm it starts to close a bit. Taking the power valve off...it is very hard to squeeze closed, and also stays open when motor is off, with the new spring. It is normal to have to press this hard in order to get the bellows closed? Pls send me any suggestions, I rechecked all the instructions again. Thanks. Brian.