A-B11738789YP-AI KNOB, PARKING BRAKE model-Zero-Turn Mower Fits John Deere Lawn &

Fits John Deere Lawn & Garden Tractor Models:

Note: To adjust maximum speed setting

and maintain fuel and air delivery to the engine

T550: S/N A7UJ11001 and above

This item is #12 in the second picture above

A-B11738789YP-AI KNOB, PARKING BRAKE model-Zero-Turn Mower Fits John Deere Lawn &One New Aftermarket Replacement Parking Brake Knob for Snapper Lawn Tractors This parking brake knob mounts to the parking brake rod on Snapper front engine and hydro drive lawn tractors. It is the control knob used to engage and hold the parking brake, securing the machine when parked. A direct replacement for a broken, cracked, or missing OEM knob. Compatible Models Snapper Lawn Tractors (selected compatible models): LT2146, LT2452, NXT19542,