OutdoorKing Repair Forum Forums Repairs and Maintenance Questions on Walk Behind Lawn Mower Frames Masport Shitemaster 720 blade

Hi everyone,

I have purchased a shiremaster 720 in decent condition except the cutting blade which is worn out. I have noticed that parts are next to impossible to get.

I’m wondering if anyone has ever changed the boss adapter to the shaft with a similar fitting blade, approx 28 inch? The shaft is approx 20mm in diameter, so the bore of the boss would similar.

Or has anyone found a solution to changing the bar to a new one that fits?

Any help would be greatly appreciated, thank you.

- Fred

Hi Fred, welcome here we try to help.
What I have done some time ago was cut about 150mm off each end of the bar and drill a hole in each end of the bar and fit Victa 24 or Honda blades to the bar. The existing bar is probably hardened but I have been able to drill them using a masonry drill bit sharpened the same as a normal HSS drill bit. Slow but sometimes you have to do what you have to do