SF 750 oil leak

D

david4

New member
Location
derbyshire
Hello, I have just become the proud owner of 71 750, took it for mot this morning and noticed on my return that there is quite a bad oil leak from the top end, looks to be coming from somewhere near the left hand exhaust, is this a common fault and is it easily remedied ?
Thanks in advance
 
Sometimes runs down from the tacho cable cover if the gasket doesn t seal perfectly,if it is apply some Hylomar on a new one.
 
david4 said:
Hello, I have just become the proud owner of 71 750, took it for mot this morning and noticed on my return that there is quite a bad oil leak from the top end, looks to be coming from somewhere near the left hand exhaust, is this a common fault and is it easily remedied ?
Thanks in advance
Click to expand...


Oh dear, not another one with the top end oil leak?  terminal: give you $50 for it....
 
Could be any of the following;

Leaking cam end cover, leaking tach drive, leaking head gasket, or... oil seeping through a casting flaw (not as rare as it might seem).  I have found all of these symptoms in the past.

piet
 
1200ts said:
Both my 750's had oil leaks from casting porosity. Clean with brake cleaner and use some good quality epoxy. Problem solved.
Click to expand...

I take it you mean on the inside of the casting? I've done this before with a  cracked tappet cover on a T160; simply painted the inside with 2 pack epoxy varnish/paint: worked fine.
 
david4 said:
Sorted, leaking from the tacho drive cover.

Speedo not working, seems to be a problem with the drive, is this a common problem ?
Click to expand...

Yes. The drives often suffer from un-lubed drive cables, and sometimes from worn worm gears in the speedo head.  Both cause too much resistance, causing friction between the drive gears to increase and quickly destroying them.

Just a case of age/wear and tear, or simple neglect.

piet
 
david4 said:
Sorted, leaking from the tacho drive cover.

Speedo not working, seems to be a problem with the drive, is this a common problem ?
Click to expand...
Check the drive the simple way - remove the cable at the wheel and see if the square drive in the speedo drive turns if you wedge something in it (a square cable end is easiest); if you can turn it, it means the drive is worn out. Check the cable by removing from both and making sure it's not broken. Can also be caused simply by not seating the square drives at either end deep enough to engage, eg if the casing is 'stretched'. Wolfgang sells the drive kits. Not cheap - about CAD$165 I think.

QF
 
You must log in or register to reply here.
Back
Top