I am new to this site, and to forums in general. Not sure if this is right way to post.
I have a Scott Bonnar Mower No. 10695, Model 65030. It has an 8 HP Briggs & Stratton engine (cast iron bore). It is in working condition, but needs adjusting and sharpening. The grease nipple furtherest from the drive sprocket is missing, and the thread is stripped. I cannot see how to remove the cylinder; between the sprocket and the frame is a hole about 3/8" diameter right through the shaft. I feel that this may be for a tommy bar to undo the sprocket which could be attached by a left-hand thread. A friend thinks that this hole originally held a retaining pin which held the sprocket onto the shaft of the cylinder- if this were so then the sprocket must be rusted on. Looking at the sprocket from the end one sees a fairly featureless round recess, with no retaining nut or thread etc., and no rust. Can anyone help?
