Echo 702vl wont stay running

[Brian Webster]

I've been working on my uncle's 702vl and have it running but it won't stay running for more than a couple minutes.

It sat for years. Im not familiar with this era saw at all but went through and cleaned it up.

Piston looks great from exhaust side, I replaced fuel line, rebuilt carb and adjusted high and low per the manual. Running it on 40-1 Lucas mix. It fires right up and runs like a scalded dog for 2 maybe 3 minutes then dies. No amount of pulling on it will even get it to hit. Wait about 15 minutes and itll do it all over again.

Thoughts?

 

[Dub11]

Got an inline spark tester? I know some of these old Echos have been taken in there prime by bad coils. Or vapor lock?

 

[Fish]

points..

 

[Brian Webster]

I can crack the gas cap and it still dies. The spark tester shows good spark and then nothing upon trying to restart. I just figured if its running good at all then the points were set right so I didn't even check them, I'll have to check that. Thanks

 

[Brian Webster]

And the winner is... points. Sanded and readjusted to spec, running and running now. Thanks all