I have a 1992 750ss as a project cafe racer One of the small bolts has broken. It holds number 3 It's a hollow bolt, does it have to be OEM? Or can I use a normal brass bolt?
If you have no luck on the forum, you could try Steve Doran at Motocarb, they're Mikuni specialists http://www.motocarb.com/ 0151 924 5383
https://www.ebay.co.uk/itm/403250805528?ssPageName=STRK:MEBIDX:IT&_trksid=p2060353.m1438.l2649 May also be worth a punt as a straight swap, if in good nick, or as a source for any other spares
This happens frequently as std screw a little under par for the job, have seen replaced by both brass and st. steel screws over the years.
Memory shot and not at home to look at one, but the main needle passed through it at idle position and it's merely for clearance, nothing fussy about the diameter apart from this, so yes, needs to be part-hollow. I couldn't find an actual sectional view of a BST 38, but this gives you an idea:-
If Motocarb can't help you could always try Allens Performance, also a Mikuni specialist Allens Performance Ltd Unit B9 Moorbridge Road Bingham Notts NG13 8GG Tel: 01949 836733 Fax: 01949 836734 Sales: [email protected] Technical support: [email protected]
There's a diagram and picture with the first post ^ i'm not quite sure what you mean Flatline - I was trying to give you an idea of how (generalising) the main needle needs to travel quite a distance and so needs to "park" in a position that requires clearance.
