The starter clutch I installed from a 1987 VFR did not work. My bike just back fires. The starter clutch is very specific for a 1986 VFR700 series bikes. It has two timing marks on oppisite sides of the starter clutch housing... Later model VFR starter clutches 1987 and after have multiple timing marks... Here is a side by side view of a 1987 and beyond starter clutch for the VFR ... Here is the microfiche for a 1986 VFR700 ... 1986 VFR700F Here is the microfiche for a 1987 VFR700... 1987 VFR700F I conclusion the 1986 VFR700 Starter Clutch is very specific in its design with only two timing marks for the pulse generator. The timing marks changed in 1987 with multiple timing marks when the CDI went to digital.