Well .... err - ... this happened :
Not quite the model I was looking for, but when it turns up 5 minutes away for £20....
If nothing else it's an object for tinkering with.
first thing was to take the handles off to make it easier to get on the bench
It's obviously been reated roughly by someone....
Tecum-who?
Plug doesn't look too bad.
Seen worse...
carb is a simple one.
pull-spinner is in good knick.
it's structurally ok
Carb is only about 5 bits....
Light at the end of the tunnel??
Simple cut-out switch - no dead-man's-handle on this thing....
The jet looks a lot better after some BZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZZT
Cleaning the air-filter in petrol.... (shaky photo due to the fumes..)
worth it.
And reassembled for first retry attempt.
It DOES run.
Reluctantly....
It'll fire up on full choke, then you can take the choke off and it'll run a bit, then slow down and struggle.
Possible issues:
Fuel : I used some pre-mix I had sitting around for the Puch (same ratio, 25:1): but it's been sitting in the can for a couple of years now, so may well be very much past it's best. I'll empty it out and try again with fresh stuff as the next step. (need to go get some more E5).
Resistance: it's possible that the blade/fans are dragging on something, so I'll be looking into that. Or maybe a bearing.
Internals: it HAS compression, but not a huge amount, so I initially thought the rings may be ok - but a full engine strip will reveal more - so that may well be the course of action to take.
So - not perfect, but it's a contender.
I'm also tempted to strip off the plastic casings around the engine, mainly just to take some weight off (every little helps), but not sure how important it is in managing the airflow into the fan. I get the feeling it's just cosmetic.