More recently they have tended to pump the throttle instead of using the primer. This is generally 4 for cold start and 2 for hot start.
Interested to see peoples' opinions on that little procedure...
Presume you were referring to pumping the throttle instead of priming.
Just think about where this fuel ends up - in the induction system oustide the engine between that carb and air filter, due to the fact that an updraught carb is fitted.
Ever wondered what might happen to this fuel if there was a back fire during start - some external combustion.