Edited by Jc1991, 23 January 2017 - 03:45 PM.
Twin Su 1 1/4 Carbs
#1
Posted 23 January 2017 - 03:28 PM
#2
Posted 23 January 2017 - 05:48 PM
There's a lot of good information on the web about servicing SU carbs. Some key points to watch:
- check throttle spindles for any wear. Normally with HS2 replacing the spindle sorts this without rebushing.
- check that both pistons are same time (4-5sec) in the drop test
- check dashpot springs are identical
- check needles are the same
Key thing here is to get both carbs identical, otherwise setting up properly will be a pain.
If the jet assembly is tight in the bearing try fitting a known good jet. They do sometimes get bent, then they won't move freely
#3
Posted 23 January 2017 - 10:54 PM
Any grit will cause parts to stick.
Could be worth getting them vapour or bead blasted.
Stick a rebuild kit in them and away you go!
As above make sure identical springs, needles ect are used.
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