Help needed regarding engine
 

Hi everyone, should this nut vibrate and spin around when the bike is revved?


http://rs1159.pbsrc.com/albums/p623/...h=480&fit=clip


Thanks in advance and sorry if this is a silly question.

Re: Help needed regarding engine
 

nope it should not, its the idle plunger or wizards higimydoo thing.

Re: Help needed regarding engine
 

So why is mine vibrating and turning? Bike seems fine, whats the crack

Re: Help needed regarding engine
 

i'm a bit pizzzed so my head is a bit ermmm foggy but the plunger should go in and out with the STV (secondary throttle valve) action. under no circumstances remove or turn the screw on the top of the valve and only sdjust the plunger screw if you have the correct measurment device and you know what you are doing. if the bike is running correct then leave well alone.

Re: Help needed regarding engine
 

Ok pal, thankyou. Its just that the bike is going in for an MOT next week and i wanted to make sure it passes.

Re: Help needed regarding engine
 

mot.. does not iclude the immisssions so your fine.

Re: Help needed regarding engine
 

Is that some kind of worm drive linked to the SVT? I'm pretty sure mine turns when the SVT moves.

Re: Help needed regarding engine
 

Heres a video http://youtu.be/a8XG0O3SAh0

Re: Help needed regarding engine
 

Yeah pretty sure that's normal. At least mine does that.

Re: Help needed regarding engine
 

Cheers mate, just out of curiosity does anyone know what this part does and what its called?