Chainsaw Repair

Hi.

New to the forum and a bit of a novice when it comes to repairs on chainsaws so please bear with me !. My McCulloch 335, which has served me brilliantly is playing up. It starts fine but when you try to throttle it, it sounds  as if something is jammed in the blade. But  the blade is free, and not jammed, but it does not rotate. The guard on the front (above your left knuckle) is also in the correct position.

Any ideas on how to solve this ?

Thanks in advance

Ed

Looks like band is in cover Mcculloch 335 435 440 IPL  http://www.barrettsmallengine.com/partslist/mccullochmac335maccat435.pdf

Hi

Many thanks for all the replies on this, which have been most useful. The drive sprocket is broken- the bit that the chain fits round. So i want to replace this.

I've looked at some You Tube videos and have got as far as the clutch assembly. This will not come loose to replace this sprocket. I am using a hammer and screwdriver, hitting the curved bits of metal on the outside of the spring and am hitting itclockwise but it will not budge. I have a rope in where the spark plug lives. The clutch itself and outer casing spins freely.

Any further advice gratefully received.

Thanks again.