Lifting pin

Post by **jojax64** » Fri Mar 03, 2006 2:21 pm

On the HS2 carb, how far do I push in the piston lifting pin when checking the mixture? All the way in, or just part way?
If I push mine all the way, the engine tends to cut out.

Post by **rayofleamington** » Fri Mar 03, 2006 2:25 pm

The revs should rise a little when you push it a little then the revs should fall when you push it further and all the way it should stall.

Post by **bmcecosse** » Fri Mar 03, 2006 7:59 pm

After you have taken up the obvious 'free play' you should only lift the piston about 1/8 - 3/16" inch. If revs rise then too rich, if revs fall then too weak - if they stay much the same - then just right! Be sure the engine is fully warmed up when doing the check.
Remember this is just the idling mixture - has only a tiny effect on the actual 'running' mixture.