Joe wrote:
....
Best bet for removing mower blades is an impact wrench. Use air or
electric, both work well and are much safer than blocking blades and
struggling with breaker bars. The pros at the mower shop hold the
blades with bare hands when using an impact, not at the sharpened end,

Excepting, of course, the problem of clearance. It's far more of a pita
to get the deck high enough to get the impact under there than it is to
simply remove them manually.

One only needs a breaker bar in the rare instance someone has
overtightened or the aforementioned stretching of a bolt.

A breaker bar is handy simply because it has the length to reach w/o
having to crawl halfway under the deck...

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