750SF1 Idle issue
- Thread starter chrissoz
- Start date
Laverda SF
Hero member
Possible balance tube collapsing.
chrissoz
Senior member
- Location
- Sydney, Australia
Looks like this is fixed - probably was a poor seal on the insulators - Yogi gave me a new set and new O-rings - fitted these and my idle can now be adjusted lower than 1500 rpm.
Not sure why this became a problem after fitting new cables - maybe the force needed to get the carbs off the mounts caused some distortion in the insulators - the ones I took off did not look too bad and there were no obvious cracks.
Not sure why this became a problem after fitting new cables - maybe the force needed to get the carbs off the mounts caused some distortion in the insulators - the ones I took off did not look too bad and there were no obvious cracks.
Laverda SF
Hero member
How many of us has Cracked the Bakelite spacer by using an oversize "O" Ring Dia.
I just omit the "O" Ring and use a descent Crank Case sealant.
I just omit the "O" Ring and use a descent Crank Case sealant.
G
Grant
Guest
The alloy inlet stub mating face can bow.
Put a flat across it.
Put a flat across it.
Simonr501
Hero member
- Location
- Lympne, Kent. UK
chrissoz said:
Hooray! I finally got one right!
Grant said:
Can? :
They always do, generations of Mr.Hamfist see to that! Next step is to find the isolators are cracked through the uneven pressure, they simply crumble away at the ends and/or the inner ring confining the o-ring disappears...
Easy enough to skim the SF1/2/3 stubs, the GT/S/SF stubs are a bit more difficult.
piet
Laverda SF
Hero member
I've repaired the Bakelite Spaces using Le Pages Metal Epoxy Glue - Formed to shape by grinding and omitted the stupid "O" (which you can't find in the original DIA" and use Crank Case Sealant.
Crank Case Sealant - What is it: Amphoric 1101 - Also works great for the Points Cover as long as you drill a 1/8th" hole in the bottom of the cover to drain Moisture.
Crank Case Sealant - What is it: Amphoric 1101 - Also works great for the Points Cover as long as you drill a 1/8th" hole in the bottom of the cover to drain Moisture.
Yogi
Hero member
- Location
- Bellingen NSW Australia
Hey Chris,chrissoz said:
If it has fixed the problem, I'm happy.... You can order a replacement set of insulators and o rings from Piet on this forum - that's where I got them from. I can then put them back in the spares kit for the next one that needs them..
Yogi