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How to remove steel blade boss from Mountfield M3?

My 1984 Mountfield M3 has a Tecumseh BV153 engine and the blade boss on the end of the crankshaft is steel not alloy. It has so far resisted my efforts with a gear puller so any advice on how to shift it would be most welcome.

Terry Iddon
October 2008
Thanks Phil, that worked perfectly; it's off!!

Terry Iddon.
October 2008
I assume you are using a puller which is bearing against the blade bolt temporarily re-installed (loosly)?

If so, put as much tension on it as you dare, then apply heat (via a blowlamp) to the blade adapter.

Only ever had one fail to come off in 20+ years. In that case I had to resort to a power hacksaw and split it.

phil_saunders@bigfoot.com

Phil Saunders
October 2008
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Mend repair fix Mountfield lawn mowers