Here is a suggestion. drain the oil to check for anything odd in the oil if nothing take the spark plug out have a look in the spark plug hole next put the bike in 5th (top) gear try to pull the bike backward you only want to turn the engine a very small amount once the engine has turned over backward a small amount try to look into the spark plug hole next take off the water pump cover and make sure the impeller in intact next I would have a look in the clutch side cover I would not suggest trying to start the bike until you find the problem
connect the fan to a 12 battery to check that it works correctly if it does the most likely problem is the regulator / rectifier if that is not the problem you may have a ground fault
I think you need to take the bike apart to figure out what is going on. My thought is not to put all of your weight on the kick start lever and bounce. Good luck.
merlin / cagiva DG 350 looking for mudguard
in Twinshock
Posted
The goneli fenders that fit the Bultacos of the early eighties are the same as the ones fitted to the Merlin / Cagiva twinshock models