Hi markmac, and a warm welcome to the forum. Its always nice to welcome another Scott Bonnar Model 45 owner on board.
Kempe is quite correct, the reel bearings are now the sealed type and are maintenance free.
The one thing to remember here is that the engine shaft bearing (that's the one behind the small primary chain sprocket) is the
self-aligning type and
must be replaced by the same type.
As grumpy has kindly replied, I'd like you please to post some pics of the cylinder reel, bedknife (bottom blade, especially the front vertical edge and the chains and sprockets from a point in line with their axes, so that the tooth form can be seen clearly.
