Hi Sir Chook and Beech.
Honestly between the two of you who needs a parts book.

Anyway I feel that the correct path for me to take is to dismantle the 20" Lightweight mower first. Take plenty of photo's and layout in order of disassembly. I will not dismantle the engine nor the rear roller at this time until I have completed the frame etc.

As the engine and the roller will be out of the mower at this time I am thinking that I may be able to glean some more information regarding the roller. I am fairly certain that the engine will not give me any major surprises, other than decoking and may be new rings. Well that's what I am hoping.

Regarding the other machine, I am a little apprehensive about the 3 piece rear roller, hence the decision to tackle the lightweight first. May be I will learn something from that.

I must say thank you very much for your help and expertise, I hope I can call on you for help when the time arises.

Beech, I will take you up on your very generous offer about the catcher for the lightweight. I am in no rush as this blasted covid is affecting all of us.

Sir Chook, The parts books that you refer to, can copies be obtained or just individual pages. Hopefully I will not need to purchase too many parts, .If I need parts are you able to assist me with their procurement?

Kindest Regards
Please stay safe
Arty