Hello everybody,
Reading here in the forum has helped me a lot, now it's time to ask a question:
I'm disassembling an old riding mower to restore it - first and foremost is the engine.
It is a Briggs "Boxer" (opposed twin) and exactly the air baffle, in which the numbers for model, type and code should be stamped is missing.
I hope now with the assembled professionals here, due to the characteristics of the engine, to narrow down its identity.
* The model so far: 4xy7z7
4 - 40ci at least, it's the boxer
x - this is really only 0 or 2 in question, I think
y - basic design series unknown
7 - vertical with FloJet without wind govenor
z - have not yet opened the crankcase, do not know which bearing is installed, at least no external oil filter
7 - electric starter with alternator
* It seems to be the oldest carburettor in this series, with adjusting screws for both high and low speeds. It's not the Nikki_6.
* It is probably the earliest fuel pump installed, with the body made of beige plastic and sitting on the right side, not the front.
* The intake bridge seems to be of the oldest type, upper and lower halves can be split lengthwise.
* On the inside of the flywheel (all steel including the fins) there is a cast mark 'GI 76' - if this should indicate the time of the casting, it would be before the first pre-series boxer ...
I will gladly share more details or take pictures. Here in Germany, this engine is extremely rare, so I can't ask anyone here.
Many thanks for your help,
greeting
Franz
Reading here in the forum has helped me a lot, now it's time to ask a question:
I'm disassembling an old riding mower to restore it - first and foremost is the engine.
It is a Briggs "Boxer" (opposed twin) and exactly the air baffle, in which the numbers for model, type and code should be stamped is missing.
I hope now with the assembled professionals here, due to the characteristics of the engine, to narrow down its identity.
* The model so far: 4xy7z7
4 - 40ci at least, it's the boxer
x - this is really only 0 or 2 in question, I think
y - basic design series unknown
7 - vertical with FloJet without wind govenor
z - have not yet opened the crankcase, do not know which bearing is installed, at least no external oil filter
7 - electric starter with alternator
* It seems to be the oldest carburettor in this series, with adjusting screws for both high and low speeds. It's not the Nikki_6.
* It is probably the earliest fuel pump installed, with the body made of beige plastic and sitting on the right side, not the front.
* The intake bridge seems to be of the oldest type, upper and lower halves can be split lengthwise.
* On the inside of the flywheel (all steel including the fins) there is a cast mark 'GI 76' - if this should indicate the time of the casting, it would be before the first pre-series boxer ...
I will gladly share more details or take pictures. Here in Germany, this engine is extremely rare, so I can't ask anyone here.
Many thanks for your help,
greeting
Franz
