Mower deck New belt..now blades turn..

ARMYtango

Member
Joined
May 23, 2012
Threads
8
Messages
22
Hey all...

Scag swz48a-17ka walk behind.

Belt that goes between the motor and the deck broke. I replaced it, and now when I start it up, the blades turn even though PTO is off.
I have loosened the belt tensioner pulley in case the belt was too tight, but still no change.

Blades will spin faster when PTO is engaged, but will only slow when PTO is disengaged.

Any idea what else to look for?

Thank you in advance!
 

bertsmobile1

Lawn Royalty
Joined
Nov 29, 2014
Threads
64
Messages
24,647
The Clutch is cactus.
Most are not rebuildable , some are adjustable.
We will need the make & model number or a couple of good clear photos..
On most of the newer models there is a brake function in the clutch itself which prevents the blades turning.
Sounds like a colapsing bearing.
 
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