1) The current carby and tank came off a working machine. The primer is spraying fuel into the intake manifold as it should. The primer bulb is retracting as it should and is not staying pushed in. It still won�t fire even when I put a little petrol into the plug hole. It will pop and carry on for half a second but that�s about it. The engine should fire for a second or 2 when petrol is put in.
2) Last night I thought the kill switch might have a fault (the deadmans set-up). So I removed the setup and replaced it with a standard kill switch setup via the throttle control and no change. I guess that took away a possibility.
3) I can confirm the oil problem has been eliminated since changing the breather valve.
4) I have another carby which I could try tonight off another machine I know works.
5) I tried 2 brand new plugs in other machines that worked perfectly. It made no change when put onto this machine.
6) I put a brand new muffler on and it didn�t make any difference.
I don�t have a catcher for this mower (GMC catchers) as they are the flimsy and prone to breaking� so yet another bad point of this mower.
I wasn�t sure about your method of using a drill as I don�t have the attachment to put it onto my battery drill. I have the socket but no suitable attachment. I did however give it 20 good cranks and nothing put the odd pop or two occurred.
