this rm 80 has fallen into my hands after sitting for years and it has no serear number or sticker or nuthin but the frame is BLue and its air cooled so im thinkining its 1982, it has no spark and im wondering if its the cdi because iv got 4 volts coming directly from the magneto when i turn it over by hand so is that high enough or what so please any info will help

 

you need to check for a switch or a kill button that is closed keeping it from reaching the coil making the bike fire ,your problem seems to be electrical

 

the kill switch seems to be functional