Hiya Guys,
Any advice please Im not a mechanic but will take anything to bits if I
can, any advice on the above. Seem to misfire at higher revs also, it
fluctuates as well seems as though its going to stall then finds its
mojo again, please help

Also

Could you confirm its a 6 HP from its serial number along with letting
me know what year it is the serial number is c0074154

Cheers
Pete