Hi new owb fitted rotastart checked the handset that controls the rotastart is working But when I try to start car it just spins on the shaft making a zzzzzzzzz sound not a clacking sound it's a hpi firestorm
You can download the exploded view diagram from the HPI site but as a quick answer I'm sure that the three shims go under the part that holds the glow plug and then the head holds it all down.