OutdoorKing Repair Forum Forums Restoring, Customising and Modifying Tech Talk Scott Bonnar 45 Mower: help with engine service

Hellot here all,

wow- this is an active forum- thanks for all the replies and tips.

Deejay I think you are right about it being a Rover version. Rover is right there on the identity plate. Also well spotted on the missing rubber bumper- it fell off just after I started the machine- it had split in two.


I looked for the strip of numbers everywhere but cannot see it? I have included an image of what I think is the air cowl- is there something I am missing?

As to the smoke: it is whitish and not too bad- perhaps a normal amount for a mower of this type?- my $100 chinese whipper snipper makes more. It's just with the mower you are walking right behind it- and I was hoping a new muffler may decrease the fumes... but I don't think it indicates anything majorly wrong.

I am keen now to restore this machine: and really like the look of that green hammertone on some of the mowers on this forum...I love hammertone paint.


My electric converted Bonnar looks bad in this photo with grass everywhere- but it is actually very clean underneath- and the blades seem to be excellent. I am wondering if I could use the chain cover from the side on my 45- they look to be the same except the older one has an orange cap in the center- for oiling the chain?. The one on the 45 has a few dents and some rust as you can see. But perhaps I should keep the electric one original? Is it worth anything like that without a motor and clutch?


Here are the pics of the bottom of the machine and the identity plate (last image).