The John Deere 437D is a trailer-mounted knuckleboom loader. Three basic setups are available for your shop: Sawbuck, Delimber, and Loader alone.
You may chop trees to a variety of sizes using a sawbuck. When you chop down a tree, you may use a delimber to remove its branches. It may also be used to load logs onto a trailer.
You may lock it to the arm for more stability while working with the trees (the red area appears at the locking point). Before you touch anything with the tree, make sure you unlock it.
The John Deere 437D
Shop category: Trailers, Excavators
Cost: $230,000
280 HP of power
Maximum velocity: 3 kph
Features include:
8211; Design
8211; Wheels
8211; Arm type (log grapple or fast coupler)
8211; Tinted windows
8211; Auto tilt of the fast coupler (yes or no)
8211; Beacon lights
8211; Body color
8211; Cab color
8211; Grapple color
8211; Tools color
8211; Rim color
Fast coupler setup accessories:
Log Grapples (Dangling or Fixed)
Category of shop: Excavator Tools
Cost: $15,000.
Delimber that is attachable
Category of shop: Miscellaneous Forestry
Cost: $25,000.
To control both, you may connect it to the 437D using a sawbuck arrangement.
By default, the controls
IMPLEMENT_EXTRA (key B) – lock tree to the arm
Turn on grapple rotation (free or manual) – LOWER_IMPLEMENT (key V) – TOGGLE_PIPE (key O) Unfold stabilizers
IMPLEMENT_EXTRA2 (key X) Cut tree
Using key Z, unfold sawbuck and IMPLEMENT_EXTRA4.
Display the sawbuck measure tool – IMPLEMENT_EXTRA3 (key Y)
Clowns for delimbers – AXIS_CRANE_TOOL3
Details on the delimber:
In the delimber, place the tree. Next, shut the delimber's claws and move or rotate your arm to run the tree throw delimber. With a saw on the rear of the delimber, you may cut the tree to the desired length once it has been delimbed.

Credits: JDL Logging, Kenney 456