Hi Joe and anyone else reading,

Today, I gave it another try. Just boiled the old o ring on the primer cup lid for a while and put it back on (not permanent but today is Sunday and no chance to buy a new one). It sealed ie. no leaks under gravity pressure. I discovered that the rubber primer bulb is split but that should not be too much of a problem as it's only a starting aid and to the best of my knowledge should have no effect on the running of the engine. Am I correct or wrong in that assumption.?

Anyway, I started it up which happened on about the third tug and it ran pretty well so I decided to cut some grass. This is the first time I've started it in almost 2 years.

The result was the same as previous. It ran and cut perfectly for about 20 minutes and then died. I only had a little fuel in the tank so added more and it started right up again but only for about another 5 minutes and died again and I could not start it again. (Added this Edit later - the engine had NOT run out of fuel - there was still some in the tank - I just felt it better to fill it all the way.)

I dragged it back to the shop and took the spark plug out and earthed it on the engine and checked for spark. There was spark but due to a slightly gammy hand and not being able to actually hold the plug against the engine and pull the starter cord with the other hand at the same time I was unable to actually determine if the spark was "good". (Unfortunately for me, this is a two person operation and I was alone and it took me at least 10 minutes to check for spark after the engine had died - so it was NOT immediate but I do not think the engine had time to cool down too much).

Tomorrow I will go to town and buy new O rings and a new spark plug and give it one more go but it's beginning to look like the electronic module you mentioned may be the problem. You mentioned "older type". I've taken a pic of mine - could you help identify it for me. (If I can get the file upload thing working !!)
[Linked Image]
[Linked Image]

Well if that worked, there should be a pic of my module and another of the actual coil.

I'll post this to see if it worked and then do another post as I have more questions to ask.
Thanks for the help so far.
Jerry







Last edited by jerry; 14/02/11 10:31 PM. Reason: Extra info added