After a few hundred miles since getting the 1985 K75C back on the road have noticed a spot of oil on the garage floor below the clutch arm, and there seems to be a rubber boot there. I am thinking it may be leaking from there and wonder if this is split or perished with age.
Is this easy to replace any hints or tips?
If there is a leak here is that an indicator of anything major?
My Haynes manual doesn't seem to be very descriptive about replacing this other than to if its leaking.
Mark

First check that the clutch is correctly adjusted, if the lever arm at the gearbox have to much angle relative to the piston/rubber boot, a leak could occur.

How to adjust the clutch correct.

Inge K. wrote:First check that the clutch is correctly adjusted, if the lever arm at the gearbox have to much angle relative to the piston/rubber boot, a leak could occur.

How to adjust the clutch correct.

Clutch adjusted correctly..cable length at end and free-play; and still a drip from that area.

Any notes or hints on the steps to replace the rubber boot?   
Should any other parts be replaced at same time   
Is this 'easy' with the engine/clutch/transmission in the bike or is there some major dismantling      needed?

Mark

Can be done without removing any bits.
Things to check would be the thrust bearing inside the rubber boot on rear of the the pushrod also check the clutch arm bearings for wear.
I did mine recently, instead of a clamp to secure the boot I used a (black) cable tie pulled up really tight, so far no leaks.
Can be a bit fiddly though.