Buhler 2425 - Manual (Page 213)

SECTION 2 - OPERATION
2-155
38° - To limit the articulation angle to 38°, use the
articulation blocks with the thin portion toward
the inside.
NOTE: Any tractor that is equipped with a
PTO option requires a 38° articulation block
kit be installed on it. If the tire size of the
tractor requires a 33° or 31° articulation kit,
use those kits instead of the 38° kit for a PTO
option.
Figure 2-218
33° - To limit the articulation angle to 33°, use the
articulation blocks with the thick portion to the
inside.
Figure 2-219
31° - To limit the articulation angle to 31°, use the
articulation blocks in conjunction with the
backing plate, 1. The articulation block should
have the thick portion toward the inside.
Figure 2-220
1