ms361 cuts out chainbake applied

[BTS]

Had to put a new clutch and oil pump on my ms361 all correct parts fitted but now when chainsaw runs and chain brake is applied the saw cuts out, apart from this the saw runs fine, I replaced needle bearing etc when I did clutch. I'm stumped with this old clutch took a good thump to get off wondering if I have done something to crank (but it looks fine with no play)

[spudulike]

When the saw is on idle, it produces very little power. The stalling is caused by the resistance between the crankshaft and the locked up clutch drum.

 

Generally it means that there is dirt on the clutch drum, the clutch springs have gone, there is twine wrapped around the crankshaft or the bearing isn't lubricated etc.

 

The stalling will mean that something is causing resistance between the locked up clutch drum and the crankshaft, just have to find out what!

[BTS]

Cheers for reply have been having another look and when chain brake is on it pushes clutch drum up at a very slight angle making it uneven. I think this is what is causing the friction

[spudulike]

Cheers for reply have been having another look and when chain brake is on it pushes clutch drum up at a very slight angle making it uneven. I think this is what is causing the friction

 

If it has had a new needle bearing then it may need a new clutch drum as the central bore may have opened up a bit, if this is new then perhaps the crank is worn - less likely on a realtively new saw!

 

It may be that the brake band isn't seated properly so check that also.

 

Does the chain spin on idle or at least make a ringing noise on idle?

[GardenKit]

I reckon maybe the oil pump drive arm is not in the little notch in the clutch drum. This will tilt the drum a little.

[BTS]

taken it to bits and can see the crank is sightly bent, got a friend to have a look just to make sure, and yep my left handed brute force efforts of getting the first clucth off ( hammer coal chisel) have bent it. Will try and straighten if not will put new crank in.

[spudulike]

taken it to bits and can see the crank is sightly bent, got a friend to have a look just to make sure, and yep my left handed brute force efforts of getting the first clucth off ( hammer coal chisel) have bent it. Will try and straighten if not will put new crank in.

 

Oh dear:thumbdown: