JOHN DEERE S120 Mower Uneven Cut Deck Level
| CONF | DIAGNOSIS | ACTION |
|---|---|---|
|
91%
CONF
|
Mower Blade Set (42-inch)
Uneven cuts are most frequently caused by 'blade tip tracking' errors where one or both blades have suffered kinetic deformation. Even a slight bend in the metal prevents the blades from rotating in the same horizontal plane, resulting in a 'stepped' appearance in the turf. Replacing the set restores the factory-specified cutting plane.
SKU: AM141033
|
|
|
5%
CONF
|
Rear Deck Lift Link
The rear lift links are the primary mechanical adjustment points for side-to-side leveling. If the threads are stripped due to vibration or the link itself is bent from a deck strike, the deck will hang at an angle relative to the chassis, causing one side of the swath to be lower than the other.
SKU: GX21693
|
|
|
4%
CONF
|
Front Draft Rod
This component manages the front-to-back pitch of the mower deck. If the rod is bent or the adjustment hardware has migrated, the deck pitch will deviate from the required 1/8-inch nose-down orientation, causing the grass to be pushed over before it is cut or resulting in an uneven discharge pattern.
SKU: GY20438
|
DIY Repair Guide
Watch exactly how to replace the Mower Blade Set (42-inch).
// NOTICE:
This report is generated by an Agentic AI Engineer utilizing probabilistic modeling.
PartSniper is an automated parts recommender service. AI-generated results may not be correct. This data is not a substitute for professional engineering advice or manual inspection. Always verify part compatibility and disconnect power before any repair. PartSniper is not liable for inaccuracies, injury, or damage.