Blade on toro 20113 wont tighten - crank moving

[trooper1954]

Hi guys,
Just mowing my lawn when the blade came loose...tried to tighten it but the crank is turning before it gets tight...any idea how to resolve this?
Thanks.

 

[Rivets]

Check to see if the blade adapter is turning freely on the crankshaft. It should be tight to the shaft, if it turns separately from the shaft, the built in key has sheared and the adapter will need to be replaced.

 

[trooper1954]

Check to see if the blade adapter is turning freely on the crankshaft. It should be tight to the shaft, if it turns separately from the shaft, the built in key has sheared and the adapter will need to be replaced.

Thanks Rivets for the reply.....here's the toro parts diagram but I'm not sure what you mean by blade adapter?

 

[Rivets]

Part number 5

 

[trooper1954]

Yes..Next question is how do I remove it when I cannot undo the nut?
Thanks

 

[trooper1954]

Rivets,
My apologies...Ichecked again this morning and the blade driver assembly does NOT turn on the crank...just unable to tighten or loosen the blade. Is it possible the thread may be stripped, and if so, I guess I'll need a new blade driver assembly anyway??
Any ideas as to how to remove the blade nut....maybe some heat or an air impact??
Thanks.

 

[Rivets]

If the bolt just spins, then the threads are stripped in the end of the crankshaft. This is not good. You will have to get it out somehow. If it is stripped, you should be able to grab it with a vicegrip and work it out.

 

[Parkmower]

Did you use a 2x4 or something to block the blade?

 

[exotion]

Strap wrench on the blade adapter or vice grip on it and carefully work the nut out. If the blade adapter has sheared will need to be replaced or if the hole is stripped will need to replace

 

[trooper1954]

HI guys,

Thank for all the help....I eventually got the bolt out with an impact...and just as Rivets said, the blade driver assembly had sheared the key....got a new one and all is well. The bolt was not stripped so that was a bonus. Also Rivets....a few weeks ago I had an issue with this same mower not starting.....you were right again....it needed a new coil!! Anyhow all is well and thanks everyone....I can now cut my knee high grass!! :laughing: