OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Question On Scott Bonnar Cylinder Mowers 14" SB45, use for parts or fix?

Looking inside the chain covers of the model 45's, I noticed that the colours they used between machines are quite dissimilar. The 17" seems to be a lot more turquoise than the 14" and the hammertone effect is quite reduced.

17" cover shown on the left.



Another discovery...I used a heat gun and chisel to scrape off the old paint and found this...



The old paint came off easy and so did the bog a previous owner attempted to use to fill in any dings. Unfortunately, none of the rust was removed first.


I have ground off the nuts from underneath the chassis rails to complete a gusset repair; shown on another thread. My choice is to use 6mm steel angle bar to strengthen the chassis, tack weld in place, grind out cracks and weld back in. These chassis are extremely flexible once the sole plate and rollers are removed. It seems as if the shape of the chassis can be affected by simply adjusting the position of the sole plate before securing in place (due to the play between the bolts and bolt holes).




Lasty, cracks are only showing around the holes on the engine side of the chassis; this includes the 14" model. The cracks in the 17" model are less severe, probably because it is a later model and wasn't used as often.