Check rpm, over revving will cause running hot. Check mixture, running lean will run hot. Check fins and fan function, needs air flow to cool the head and barrel.
Check rpm, over revving will cause running hot. Check mixture, running lean will run hot. Check fins and fan function, needs air flow to cool the head and barrel.
Fins not clogged, will have another look at the fan. Not sure about the overrevving, by the way how are you checking the rpms, with a tachometer?
