660!!!!!!!!!!

[TGB]

... i cut trees down and catch lobsters for a living!! ...

 

I presume the lobsters fall off the branches, as the tree falls. That must be quite a feat of juggling. Do you catch by hand or use a net? Though I know pots ate the more traditional method.

[Isabelle68]

I presume the lobsters fall off the branches, as the tree falls. That must be quite a feat of juggling. Do you catch by hand or use a net? Though I know pots ate the more traditional method.

good old fashioned pots

[spudulike]

OK, you have compression, that is good, the other guys are correct on the tank breather, that can make a saw run for a short period and then get a bit boggy and not liking to rev out. The loosen the fuel cap check should tell you one way or the other - you could pop the breather off and see it that makes a difference.

 

I did have a MS460 in once with the exact same issues, I found the coil was a little too far from the flywheel and as soon as it warmed a little, the spark would fail so worth a check - just put a business card alongside the coil and rotate the flywheel magnet raised part of the flywheel round (piston will be near top dead centre) and loosen the coil so it is drawn toward the magnets and do up the coil again. Spin the flywheel and make sure it doesn't touch the coil.

[Isabelle68]

OK, you have compression, that is good, the other guys are correct on the tank breather, that can make a saw run for a short period and then get a bit boggy and not liking to rev out. The loosen the fuel cap check should tell you one way or the other - you could pop the breather off and see it that makes a difference.

 

 

 

I did have a MS460 in once with the exact same issues, I found the coil was a little too far from the flywheel and as soon as it warmed a little, the spark would fail so worth a check - just put a business card alongside the coil and rotate the flywheel magnet raised part of the flywheel round (piston will be near top dead centre) and loosen the coil so it is drawn toward the magnets and do up the coil again. Spin the flywheel and make sure it doesn't touch the coil.

 

 

Cheers spud, i,m having tea then i,m going in my shed! I,ll report back