Replacing Your Engine On A Scott Bonnar Reel Mower

The Scott Bonnar Reel Mower range, is still considered one the best mowers for a low, clean and high quality cut. You can definitely identify a lawn that has been cut with a Scott Bonnar Reel Mower.

One of the most common questions we get, is what engine would be a suitable replacement option for the 430 and 450 series models. 

The new Briggs & Stratton 3.5 Horsepower 550 Series Horizontal Shaft Engine, would be the most suitable replacement, as it has the same shaft and mountings to bolt straight on.

The Briggs & Stratton powerful 550 Series petrol engine utilizes (OHV) overhead valve design technology. It features an automotive style air filter, cast iron cylinder sleeve, and dual bearings for longer life. 

Briggs & Stratton's great reputation for easy starting and superb reliability, make the 550 Series the ideal replacement engine for your Scott Bonnar Reel Mower.

For full specs and options with the Briggs & Stratton 550 Series (3.5Hp) Engine please visit our product page here :- Briggs & Stratton 550 Series 

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10 comments

Ricky

Ricky

Hello I have a 33 Scott Bonnar with a Kirby motor, I want to replace motor, do you sell motors for that model, do I need to measure the shaft

Andrew Forster

Andrew Forster

Hi There
I Have just purchased a Scott&Bonnar mower with a Kirby motor H4-4A.
I’m looking to source a few parts for both the mower and engine, what is my best way?
AndyF

DAvid KIng

DAvid KIng

I have a Scott Bonnar mower with a Briggs & Stratton like the one in this picture I need a basset that goes between the cabarator & the intake pipe can you please advise as to where I can get this & the price

Thanking you
David King

Aaron Van de velde

Aaron Van de velde

Hey there I have a Scott bonnar 45 model 450407. The shaft is 7/8 not sure if that helps. It’s a 3hp pretty sure 4 stroke. Would you know of a replacement model in your range you could point me in.

Dave

Dave

Just want to say a big thanks to the guys at The Small Engine Warehouse. I ordered a replacement Briggs & Stratton for my Scott Bonnar 45 and I can’t tell you how easy it was. Great service, all the staff were very helpful and there are plenty of resources to help you if needs.

Thanks again fellas.

Cheers, Dave

Peter

Peter

Hey buddy best engine to fit onto a Scott Bonnar 43 it’s got the original 202 engine on but does not have spark anymore, cheers

Admin

Admin

Hi Mike – The throttle cable is not included with the engine, you will need to use your old one, or purchase a new one. The new Briggs engine and owners manual is all that comes in the box.

Mike Donovan

Mike Donovan

What is included in the box? Is throttle cable / leave included?

Admin

Admin

You have a choice of a 5/8" or 3/4" diameter shaft when replacing the engine on your Scott Bonnar mower, you will need to measure the diameter of shaft of the engine you are replacing so everything fits back together easily.

Chris

Chris

Hey there what size shaft Will I need for my Scott bonner 45 cheers

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