Not in a position to help at the moment as just in the reassemble stage of a similar unit for my cousin. I am told that the engine was running in my case before it was laid up 5 years ago with a broken rotor. I will look and see if I can suggest an alternative.

Jeremy

It is good that you sorted the clutch out without disassembly – lots of work. Just as background I think the…[Read more]

There does need to be common sense, though this can appear as uncommon sense at times, Commercial growers…[Read more]

Support the Engine, undo the nuts and pull to get at the clutch.

Once out you should be able to get…[Read more]

I agree completely. I am keeping an eye out for spares but would only buy when there is delivery by post or courier.

Just about to start 2 weeks of holiday in isolation and am looking forward to all of the projects that might get completed before the summer!

Keep well and keep safe everyone.

Currently I am restoring a Howard Selectatilth for my neighbour. Finding…[Read more]

Just checked the exhaust on the seized engine – Well rotten. You will probably need to find a specialist, I would be starting with a search of the Stationary Engine parts suppliers:

The site “Vintage Air cooled Engine Spares” might be able to help as they show the BAS420cc under the BSA parts. It is likely if they cannot sort you out…[Read more]

One question for you Does your machine still have the reversing lock system in place, On a yeoman there is the clutch (normally on the right hand handlebar) and a second lever on the left hand handlebar. When you go into reverse the clutch is automatically disengaged until the left control handle is engaged, a rather useful safety…[Read more]

In my case I was not looking to restore the unit back to original but rather build what is a useful rotavator / 2 wheel tractor for the garden. When I got my first Yeoman it ha a ceased engine (I had a 2 tonne press trying to move the piston without luck so it must be nearly welded. As a result of knowing the engine was not going to…[Read more]

Hope this helps
Jeremy

Jeremy

Jeremy

Many thanks, perhaps the taper is for the dirt to get out. At least there is no turning to create new bearings.

Jeremy

Jeremy

sorry just assembled the rotor box on mine. The pitch of the join would be the same as the pitch of the links, if you have a Vernier this should give the measurement. The Yeoman is definitely an imperial size.

Jeremy

Jeremy

Clutch nut is 9/16 BSF thread having damaged the threads I am in process of repairing with Helicoils.

I found that with the dog clutch removed a 17mm rounded but socket can be used to lock the PTO shaft.

The Dog clutch I snow being repaired by brazing a new layer of material onto the sealing surface ready for turning. I left to cool yesterday rather than re-hardening so will heat and quench in oil later in the week, a good…[Read more]

The gearchain cover gasket is different so will have to cut a new one from cork which luckily I have some cork available

The tines are the same the Gem so new ones can bought (the old ones were very worn)

The rotor friction plates are of a different to the Gem, I will…[Read more]

Thank you for the encouragement. I will probably wait until the sun shines for photos.

Got the new seals and bearings. just need to find a safe method of unscrewing the dog so I can change the oil seal then the basic mechanism can go back together after paint. The rotor box has had a very hard life looking at the tines and the bearings…[Read more]

The gearbox and engine are working well with the riding seat as a towing unit at the moment. The wheels off the Howard 400 fit well. I am looking for wheel weights as traction I snot a good as it should be. Does anyone know if Howard supplied wheel weights for the Howard 400?

On a different note I woke this morning to snow…[Read more]

The gearbox and ancillaries are all assembled except the clamp and gear level / cables as the new units arrived yesterday. About 1/2 way through machining a new engine mounting plate adaptor. Hope to have this as a running unit before new year now. Can look at the rotor box afterwards

Not sure about the other members of the club, it is honourable to keep original, but like you I need my machines to work. The ones I have recovered largely have engines beyond economic repair as either rusted up, seized or completely missing. I agree with modify but with the option to reverse the modification…[Read more]

Does anyone have a picture if how it should assemble? Approximate…[Read more]

When I looked at the Gem I was more concerned about the…[Read more]

I have a Gem and like you was looking at the idea of using it a two wheeled tractor. The problem is that you have to take a lot of the rotor box off to get a usable tractor unit and then start welding to get a mounting point for implements. I have chosen to go the Yeooman / 70 route where the rotor box drops off easily and new implements…[Read more]

I had the same problem solved when I bought some clutch plate offcuts from a specialist supplier in the west midlands and cut the plates myself using a scroll saw and many saw blades. Suppliers use Waterjet cutting as friction material is abrasive

If you get a drawing you may find that the ransomes mowers use the same sizes

Good luck
Jeremy