Wristpin

Two machines recently sent in for “service” !

Found this
https://www.amazon.co.uk/Buckbock-16100-ZF2-V01-Carburetor-16100-ZF6-V01-16100-ZF6-V00/dp/B07KQ6X9J1/ref=sr_1_7?ie=UTF8&qid=1549663344&sr=8-7&keywords=huayi+carburetor

An interesting plaque with the archaic word "relict"  - for widow.
If anyone has an interest in the history of adjustable spanners , there's a man named Ron Geesin who has a collection of over 3000 and has written a book on the subject.
The Adjustable Spanner, History and origins.ISBN 978 1 78500 035 5

Not the easiest site to navigate but you will probably find what you need here.
http://www.honda-engines-eu.com/en/welcome.html

It was quite common for vehicles, both cars and tractors , and for that matter large bore domestic central heating , to operate on the siphonic principle. If your engine has a pressurised system ( spring loaded radiator or filling cap) the pressure raises the boiling point to allow the engine to operate more efficiently at a higher temperature than if it had a system open to atmospher.  
So unless your unpumped system was showing signs of boiling, it is quite possible that it was operating correctly . The presence of the pump’s impeller may well be having an adverse effect.

Probably about 1948

Probably about 1948

Hmm !!!
Approval  or not ,  increasing the gap by any means is counterproductive as far as compression release for easier starting is concerned. The bigger the gap, the less effective, whatever the release method. That said, a really knackered ( technical term) engine may benefit from all the compression that can be found. AKA an elegant, albeit unorthodox, engineering solution!

In their day those diesel Westwoods were not exactly a “happy” machine. Rather typical of a diesel lump being dropped into a petrol chassis. Later on Countax had the same issue putting the Yanmar lump into the A20/50.  Westwoods suffered bad vibration, broken fuel pipes and chafed wiring and then ,  Fire!  If one saw a burnt out Westwood it was invariably a diesel!
 

In their day those diesel Westwoods were not exactly a “happy” machine. Rather typical of a diesel lump being dropped into a petrol chassis. Later on Countax had the same issue putting the Yanmar lump into the A20/50.  Westwoods suffered bad vibration, broken fuel pipes and chafed wiring and then ,  Fire!  If one saw a burnt out Westwood it was invariably a diesel!
 

perhaps you should be asking why the rod snapped? Usual cause is lube failure of the big end but the apparent condition of the crank pin doesn't support that. Next comes over-speeding.. Any sign of governor issues and are the balancer gears correctly timed? 

As pointed out by Fix'em all the Osprey does have a fibre clutch plate that may contain asbestos and this can absorb moisture and rust to either of the pressure plates  - one of which is part of the left hand wheel hub and the other keyed to the axle. Jack the machine up , remove the split pin from the nut in the left hand wheel centre and undo the nut . At this point the wheel and hub should pull off the axle . 
If it wont come off, try hitting the inflated tyre with a mallet. If that doesn't work, get back to us. 
This may be useful.
https://www.dropbox.com/s/e2rmk54zl2msh1k/Hayter Osprey and 21 0001.pdf?dl=0
https://www.dropbox.com/s/5sjvlcenhz6ghfe/Hayter 21 %26 Osprey Gearboxes0001.pdf?dl=0
https://www.dropbox.com/s/0puak77v28dnjpl/Hayter 21 %26 Osprey clutch adj20001.pdf?dl=0

Nice shed but it depends  how you rate the security risk but it looks as though the door hardware is just screwed on.
Not easy to see but are those hinges and the bolt secure?  One coach bolt through each side of each hinge in place of a screw and similar for each side of the bolt  . Long enough to go right through with decent washers and nuts on the inside.
Ideally a bolt and padlock top and bottom.

Nice shed but it depends  how you rate the security risk but it looks as though the door hardware is just screwed on.
Not easy to see but are those hinges and the bolt secure?  One coach bolt through each side of each hinge in place of a screw and similar for each side of the bolt  . Long enough to go right through with decent washers and nuts on the inside.
Ideally a bolt and padlock top and bottom.

Nice shed but it depends  how you rate the security risk but it looks as though the door hardware is just screwed on.
Not easy to see but are those hinges and the bolt secure?  One coach bolt through each side of each hinge in place of a screw and similar for each side of the bolt  . Long enough to go right through with decent washers and nuts on the inside.
Ideally a bolt and padlock top and bottom.

Nice shed but it depends  how you rate the security risk but it looks as though the door hardware is just screwed on.
Not easy to see but are those hinges and the bolt secure?  One coach bolt through each side of each hinge in place of a screw and similar for each side of the bolt  . Long enough to go right through with decent washers and nuts on the inside.
Ideally a bolt and padlock top and bottom.

That’s interesting, looks as though they concentrated on garden centres etc rather than the established mower trade. 

If a metric equivalent is acceptable 
https://www.bearingsrus.co.uk/gm8x01-25-dunlop?gclid=CjwKCAjwu5veBRBBEiwAFTqDwZ6pO8ixZLFvUt5BZqT7_5idAToPRJ8MFv6gXIkZBDgjEvkhYr4r_hoCp2QQAvD_BwE
 
Also worth looking at OEM parts lists . For example, Countax use them on their grass collectors. 

I see that there's a Westwood Clipper on that auction site at present. I'd totally forgotten that they made such a thing!. 

I see that there's a Westwood Clipper on that auction site at present. I'd totally forgotten that they made such a thing!. 

Not that it affects the availability but the early "Westwoods"  were imported and rebadged Dynamarks.

To be strictly accurate the Beast did not have a Merlin engine but a Meteor which was the detuned version used in armoured vehicles.

That's a configuration often used in heavier duty garden tractors such as JD,  Ariens or Cub Cadet with a U/J off the back of the engine to shaft drive to the transmission and the drive to the deck via the electric clutch  and one or two belts dropping down to a mule shaft under the chassis and a U/J and short shaft to the deck.. However the position of the fuel tank looks a bit wrong for that application.

But its not a chain driven fan, just happens to be on the crankshaft that's driving something else. Similar arrangement that used on several old mowers such as Atco Standards.

All well loved!!!
The last one is a Briggs, the Villiers with the reduction box and double pulley, possibly came off a farm bale elevator or even a soil screening trommel  - who knows. The SIF s are what they are, -  plenty around . The little two stroke , I think more likely off a small 1950s cylinder mower - another who knows?!