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There should be a nylon button on the end of the screw so no wear should occur.

Did you fit the seal right way round? Familiarity can breed errors...

Turned out that springiness was down to the the friction screw! #embarrassed!

Thanks lads, I'll have a look. It is a hard stop at wide open, it's just fully closed that has 'bounce' in it.
I did wonder if it and my hot engine braking are linked, but I can't see how. This is so frustrating. I've never had this problem on any bike - airhead or otherwise.

Hi Barry, Could you explain 'from the top' the correct method of adjusting the throttle cables, and explain how they could affect tickover given that the op says he has slack at the twistgrip please. This is a genuine question, I'm not being silly. Chz, Andrew. When the carbs have been set up and a...

Hi Barry,

Could you explain 'from the top' the correct method of adjusting the throttle cables, and explain how they could affect tickover given that the op says he has slack at the twistgrip please. This is a genuine question, I'm not being silly.

Chz,

Andrew.

I'm a bit surprised that Rob didn't tell you about his earth bypass mod. It is excellent and may be worth investigating first as it is easy. Basically, it works because these old bike rely on a low resistance between the earthing point of the diode board and the torturous route to the battery negati...

My bike runs rich thought the range. I weighed the floats and they both seem to be around 12.5 (ISH) gms on cheapy electronic kitchen scales. I put a clear float bowl on with the carbs fitted and the levels are a couple of mm below the gasket face on the forward (lower) edge of the float bowl. Does ...

The £25 was just for the machined body with oil seal and bearing Rob. Not a complete can wth guts. I'm still happy though.

Jim cray fits Boyers to all his bikes......some people hate them, but as they have been in production since 1973, there are a few of them around to have gone wrong. They used to misbehave under low voltage conditions but I think that has been fixed. check requirements for coil resistance before fit...