VC Victa,

No you do not use the knob on the carby it is only for the idle speed.

The bet is that you could have a damaged 'O' ring on the spout that the carby locks onto or you might have a leaking top seal. cheers2


Regards,
[Linked Image]

Bruce


Please do not PM me asking for support. Post on the forums as it helps all members not just the individual.