Hi Andy, and a warm welcome to the forum. It's always great to welcome another cylinder mower owner on board.
Essentially, your machine is identical (with a few minor changes) to the Scott Bonnar Model 45 thus all parts are still available. Your engine was manufactured on the 22nd June 2001.
My advice is to:
1. Remove the plastic safety cover that covers the clutch assembly if you have not done so.
Remove the 3 screws that hold the clutch housings together.
2. Remove the 4 bolts that attach the engine to the chassis and slide the engine carefully and rest on a suitable surface the same height as the chassis rails (a milk crate for example)....this is so it will not put pressure on the throttle cable still attached.
3. Remove the clutch half attached to the engine by releasing the 'captive cotter pin' by loosening the nut till it is level with the top of the thread and tap it gently down to release it from the engine shaft and slide the clutch half off. Remove the captive cotter and stow safely for replacement in the new clutch half. Discard the cracked one.
4. Slide the thrust bearing, spring and clutch cone and other clutch half off the clutch shaft and remove and safely stow the half-moon (Woodruf) key.
5. Carry out a thorough inspection of the bearing, spring and cone for damage and replace if necessary.
6. Purchase both new clutch halves (not forgetting to measure the engine shaft diameter as there is 2 sizes for the engine side housing) plus a new cork clutch lining for the outer clutch half and glue in place.
7. Replacement is the reverse of the above steps.
When this has been completed we will step you through the adjustment procedure.
Once again Andy,
