To remove the reel sprocket, remove the chain, and put a piece of steel bar of the right diameter through the holes in the collar behind the sprocket, to keep the reel from rotating. (On most mowers you have to put a wide piece of wood through the reel to prevent it rotating, but yours seems to be a more luxurious version.) Unscrew the sprocket retaining nut by using a socket spanner and rotating it clockwise, as if you were tightening a normal right hand thread. The sprocket and nut will screw off together.
Hi Gus, unfortunately,
NO it won't! There have been a few 'tenants' improvements that I can see here inside the chain case. grumpy is on the right track with it being a left hand thread, but if you follow his method, you will be fighting yourself, as the
red collar has the thread inside it, behind the hole. If you look carefully at your pic, you will see nothing is inside the threaded hole in the nut.
This is a 'tenants improvement' to assist in sprocket removal, as originally a steel rod was placed through the hole in the collar, and struck with a hammer to loosen and the opposite direction to tighten....the welded nut now makes this procedure a breeze!
Put a wide piece of wood through the reel to prevent it rotating, and unscrew the welded sprocket retaining nut by using a socket spanner and rotating it clockwise, as if you were tightening a normal right hand thread. The sprocket
and the red collar will screw off together.
