Hello,
I think this is the right forum even though the mower is not a true Honda. It is a Victa V40 OHV engine that I bought from the recycle centre. I thought it would be an easy fix but a problem still persists.
It will start first go when cold and seems to idle and rev up fine. However, after a few minutes you can hear the odd "chug", if that makes sense, and soon after it starts to puff out lots of blue smoke. Eventually it grumbles to a stop and then won't start. I have cleaned the carburettor, set the valve gap, changed the magneto and spark plug but it's not fixed. Any ideas where I should look now? Is that adjustment screw 1.5 turns out?

[Linked Image]
[Linked Image]

Last edited by sparker; 10/04/15 12:25 AM.