Location of countersunk screws that hold butterfly disc to shaft

[Peter Truman]

I’m just rebuilding a pair of Sprint 1.75in HS6 carbs and the two countersunk screws that hold the butterfly to the shaft appear from HS6 pics to be put in from the front of the carb whereas the HS4 and 2 appear to be put in from the rear. Is there any reason why they are put in from the front on the Sprint, the shaft has no specific orientation the threaded end rebates are on the same orientation as the butterfly, on the replacement shafts supplied.

[Pete Lewis]

the only thing to decide this is the shaft   .it depends which way round that fits as to what side the countersink is    

its not important    the disc orientation is the important bit 

Pete

[Peter Truman]

Thanks Pete I thought shaft orientation was the only reason and the shaft all looks mirror imaged so will leave

[Peter Truman]

Changed them over ie inserted screws from the front exactly the same butterfly seal and lever positions