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-   -   Loose blade (https://www.diychatroom.com/f106/loose-blade-657039/)

rusty baker 04-09-2019 06:55 PM

Loose blade
 
I have a good running push mower and all of a sudden the blade won't stay tight. I even tightened it with an impact. Any ideas? Maybe Loctite? Another lock washer?

joecaption 04-09-2019 07:05 PM

Re: Loose blade
 
100 % sure it's not bent from hitting something?
Checked to see if it's balanced?
https://www.walmart.com/ip/Blade-Bal...hoCSzMQAvD_BwE
Tried replacing the bolt with a new grade 8 bolt?

de-nagorg 04-09-2019 11:00 PM

Re: Loose blade
 
Yes , inspect that blade carefully, any imperfection will throw it off balance, and at the high RPM that it gets to, the centrifical force will vibrate, and cause many problems.

One of them is to become loosened.


ED

Rough Rooster 04-10-2019 03:18 PM

Re: Loose blade
 
Have you replaced anything about the blade fastening?
It should have either a friction washer between blade and mount or a Bellville washer just under bolt head.

RR :smile::smile:

Johnny_inFL 04-10-2019 05:52 PM

Re: Loose blade
 
1 Attachment(s)
posting the make and model of the mower you have will help.

the mower I have has the "star" center blade holder.
the hub with the male star is made to break away
when something is hit - vs breaking the crankshaft.
you won't know this unless you take the blade off and
examine the hub. if the star is sheared off, it must be
replaced. not that expensive and is an easy DIY project.
the hub is an easy online order replacement.
it is not threaded - just a friction fit held in place with the bolt.
if you order a new hub, you will receive a new bolt and
washer with it. use them - do not use the old hardware.

Johnny_inFL 04-17-2019 12:08 PM

Re: Loose blade
 
Rusty - Did you figure out your loose blade problem ??

.

.


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