1. The Points Cam
Somehow in the process of ordering parts and putting the bike together the new points cam was ordered and never fitted. The rusty old points cam chewed away the bakelite"heel" on the new points, retarded the spark and blued up our beautiful chrome header pipe. All the worse because the new cam was sitting in with the parts.
2. The Autoclutch
The Autoclutch is another of the features of Jawa/CZ bikes that make them stand apart from other marques. When adjusted correctly it works perfectly - with a much better action than the Triumph SlickShift. Ours was less than impressive at first and this was traced to a seized wheel on the end of the little actuating shaft. Once the rust was removed, lubrication applied and a new "c" clip fitted, action was positive and smooth..
3. The Cam Lubrication Pad.
The cam lubrication pad needs to make contact with the cam. If it doesn't, a high pitched squealing noise comes out of the right hand cover after about 30 kilometres of riding. Easily fixed by bending the tab and applying some grease and oil. Not too much though.