Ms660 stalling

[Ewoktech]

Hi guys.

newbie here from New Zealand.

i have a problem with my ms660.

it refs up fine, full noise, but when I start cutting and it goes under load it slows right down and some times stalls.

any clues as to anything I can look at?

stu

Edited January 3, 2018 by Ewoktech

[Rough Hewn]

Compression test it?

[spudulike]

Could be a multitude of things. The previously mentioned compression check is worth doing. If you haven't got a gauge then pulling the muffler off and looking at the piston through the exhaust port is one good option. Any vertical scoring isn't good - a photo will be good on here for an educated opinion.

Other than that, does it feel easier to turn over? If you try to start it with the decomp out, does it kick like a mule?

Check the colour of the spark plug, it should be dark to mid tan colour.

It is possible that you have a restriction in fuel delivery - could be a split fuel line or blocked gauze internal carb strainer.

The issue does sound like fuel or compression though.

[David Cardiff]

Check the air filter first