New MS391 not oiling chain!

[C.J]

http://i59.photobucket.com/albums/g317/H2H_PHOTOS/MS%20250/390%20MM/001.jpg

 

This is a 290 so very likely the same.

[spudulike]

Some machines have a breather down the bottom on the left hand side of the exhaust in the top of the oil tank and that is where some leak but your machine should have one of those round aluminium one way valves pushed in to the housing around the bar mount.

 

I have only worked on MS390s and have to say it was one of the worst I have done - everything has to come off to get the cylinder off.

 

Going back to the oiler, clean it up around the clutch and exhaust. Run it through some wood and take note if the chain gets dry, has a resin like dry substange on the cutters, becomes squeeky and dry sounding and tight to spin around the bar. If it does this, the saw is NOT oiling.

 

If the chain looks relatively dry but will transfer oil to your finger if the chain is raised and your finger dragged along the drive links, then it is oiling - it shoud also spatter oil if revved flat out and poinnted at fresh cut wood.

 

Don't, for God sake, check the chain with the machine running!!

[TurtleWoods72]

http://i59.photobucket.com/albums/g317/H2H_PHOTOS/MS%20250/390%20MM/001.jpg

 

This is a 290 so very likely the same.

 

Damn, mines different to that. Thanks anyway.

 

Some machines have a breather down the bottom on the left hand side of the exhaust in the top of the oil tank and that is where some leak but your machine should have one of those round aluminium one way valves pushed in to the housing around the bar mount.

 

I have only worked on MS390s and have to say it was one of the worst I have done - everything has to come off to get the cylinder off.

 

Going back to the oiler, clean it up around the clutch and exhaust. Run it through some wood and take note if the chain gets dry, has a resin like dry substange on the cutters, becomes squeeky and dry sounding and tight to spin around the bar. If it does this, the saw is NOT oiling.

 

If the chain looks relatively dry but will transfer oil to your finger if the chain is raised and your finger dragged along the drive links, then it is oiling - it shoud also spatter oil if revved flat out and poinnted at fresh cut wood.

 

Don't, for God sake, check the chain with the machine running!!

 

Yes mine has the round one way valve.

 

I'll try the above. It did result in a dry chain earlier, but maybe the lower revs were the issue. Still unsure how the oil managed to cover the exhaust and be dripping off the side casing inside and out but let the bar be dry as nuns.

[TurtleWoods72]

 

I have only worked on MS390s and have to say it was one of the worst I have done - everything has to come off to get the cylinder off

 

Seems from the phot of the MS390 that the design's changed a lot.

 

Maybe not force the better.

 

Here's what mine looks like for comparison...in that area.

[TurtleWoods72]

Ok so I've cleaned it meticulously, greased the spindle on the bar a little, tensioned and adjusted everything perfectly.

 

Tomorrow I'll rag the thing through some oak and see if I've got an oily chain.

 

If not I'm gonna break out the Solo 656 to finish the job and look to be ordering a new bar and chain for the MS391.

 

In fact I might do that anyway. Any suggestions?

 

Would a 13" Sugihara with a full chisel Stihl chain be a good start point?

[Joe Newton]

Ok so I've cleaned it meticulously, greased the spindle on the bar a little, tensioned and adjusted everything perfectly.

 

Tomorrow I'll rag the thing through some oak and see if I've got an oily chain.

 

If not I'm gonna break out the Solo 656 to finish the job and look to be ordering a new bar and chain for the MS391.

 

In fact I might do that anyway. Any suggestions?

 

Would a 13" Sugihara with a full chisel Stihl chain be a good start point?

 

 

Yeah, but a better saw would be best,

[eggsarascal]

Yeah, but a better saw would be best,

 

You're a wind-up merchant!

[TurtleWoods72]

Yeah, but a better saw would be best,

 

Thank you Joe, what would you suggest?

[Joe Newton]

You're a wind-up merchant!

 

 

I'm right though!

Thank you Joe, what would you suggest?

 

 

Doesn't matter, it's relative to requirements. Fwiw if you were nearby I'd try and help:)

[TurtleWoods72]

I'm right though!

 

 

 

Doesn't matter, it's relative to requirements. Fwiw if you were nearby I'd try and help:)

 

I can be in Rugby next week. If I haven't sorted it by then, we're meeting up for coffee.