Replacement Equipment Cable AM123446 Fits John Deere Mowers LT133 LTR155 F680 F687

What It Is

This is a replacement equipment cable (AM123446) that engages and disengages the mower deck on select John Deere lawn tractors. It’s designed for models like the LT133, LTR155, F680, and F687, and is used when the original cable stretches, snaps, or becomes too stiff to operate.

Fitment & Compatibility

Before buying, confirm your mower’s model and serial number. This cable fits:

• John Deere LT133 (deck sizes 38” and 42”)
• John Deere LTR155 (42” deck)
• John Deere F680 and F687 (front-mount mowers)

It replaces OEM part AM123446. If your cable is shorter or longer than the original, or uses different end fittings (like ball studs vs. clevis pins), this won’t work. Measure the overall length and check the end connections. This is an aftermarket part—not OEM—so expect minor differences in cable jacket stiffness or routing.

Key Things to Know

• Installation difficulty: Moderate. You’ll need to remove the old cable from the deck engagement lever and the pulley arm, then route the new cable exactly as the old one was. A basic socket set and pliers are sufficient.
• Common gotcha: The cable end fittings can be tight. Use a small pry bar or screwdriver to pop the ball studs off the lever or arm. Don’t force the cable—it should slide freely.
• Quality note: Aftermarket cables may have a slightly thicker jacket, making routing through tight spaces trickier. Lubricate the cable with WD-40 or silicone spray before installation.
• Check deck engagement: After installing, adjust the cable tension so the deck engages fully when you pull the lever. Too loose = blades won’t spin; too tight = lever hard to pull.

Should You Buy It

If your John Deere LT133, LTR155, F680, or F687’s deck engagement is sluggish, inconsistent, or the cable is frayed, this is a budget-friendly fix. It’s a direct replacement for the OEM part and works well for the price, but be prepared for a slightly fussier installation than the original. Best for DIY homeowners who want to avoid a dealer trip.