Hi guys
well my first post, and i just wanted to say how thankful i am that you guys are out there...

Well, after much scouring of the second hand (fifth hand more likely)adverts i bought a non runner.

1978 cb750 SOHC ss F? As near as i can tell...

Took her home, and she was as the owner had stated, an electrical mess having been standing for three years, outside.
First things first, oil change, then on to the elec-trickery. And , lo and behold after ea new battery, all contacts cleaned, she fired and ran after bout ten turns of the engine.

, and she sounded sweet, no major knocks or anything.Wow( i thought0
Cleaned the carbs,half got the brakes working(wip i assure you),chain off and on again after lubing and it was time to test ride.
She didn't want to go

, but after some fiddling with the adjustment bolt by the clutch housing where the lever arm fits onto, she went.
Now the problem i'm having (and i've done a search on the forum, i'm just not sure what i'm looking for.). She pulls cleanly, and the motor sound sweet(cam chain needs adjustment), but when i coast(clutch in) to a stop i get a serious clack,clack,clack, located where the front sprocket sits.The noise is reminiscent of a tight chain over a worn sprocket where it doesn't disengage properly and clacks off each worn tooth), and it's serious enough to feel through the bars.When i coast in neutral it doesn't make this noise (eliminating the chain i think). Does anyone have any idea what could be the cause?
thanks for any and all help.
Cheers
Thor