OutdoorKing Repair Forum Forums Collectors Corner Cylinder Scott Bonnar 45 ID help

Hi guys

Brand new to my first restoration, and am hoping I can get some help ID’ing this mower. I think I’ve picked it up in fair (?) condition, but honestly I’m not too sure. Maybe a 450520 but it has a sticker instead of metal plate.

Cheers!

There's an old thread on here that suggests mowers with stickers such as yours are from the late 70s.
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/109411/re-sb-45-id-plates.html

If you look on the side of the blower housing (probably near where the carb bolts to the head you should find some words and numbers stamped on there.
It should list "model" "type" and "code" with corresponding numbers below.
Model is the model number of the mower.
Code is a date stamp. Usually written as yymmdd plus a few extra numbers that I believe are related to factory.
So if your engine is original the code will probably start with a number somewhere between 77 to 80.

It's shame what someone did to those handlebars. They're in otherwise pretty good condition and looks unnecessary given it has what is possibly the original engine.

I can't see any obvious cracks in the frame but sometimes you can't see them until you remove the engine to inspect.

It should clean up nicely.

Legend! Thankyou, that’s much appreciated. The engine code is 7509300 so it’s a late 1975 engine, which I guess makes it most likely a 1977 model mower?

The handlebars are a shame, and squished how they are I don’t think are repairable, so I’m searching for some.