I am an owner of a jawa cz-175, 1972, model 482, This motorcycle has a long durability, that is my experience, because I have use it since 1975 to 1980 traveling toward the andes and the high jungle of Peru, stop its use, because other personal reasons. On 1991, only changing the battery I put it again in use for a very short period and again put the motor in use on 2004 AND IT WORKS OK!!! making some arrangements on the electrical system. Perhaps his weaknes is his electric system