Rev. 2/27/2019
SPB-P-72 MANUAL
Copyright 2019 Vestil Manufacturing Corp.
Page 5 of 7
Step 3: Select the desired plow angle.
The plow can be set in 3 positions by pinning the plow pin through the appropriate hole (A-C) in the Mid-
Frame Weldment (MFW). In the diagram below, the plow is pinned at position B. To change the plow position,
remove the plow pin. Rotate the plow until hole A, B or C aligns with the holes in the top and bottom plates of
the plow attachment frame. See also
, item 2,
p. 3. The pin must extend through both plates of
the plow attachment frame.
A
B
C
Plow pin
Step 4: Adjust plow blade height (above ground level).
Plow blade height can be increased by adding washers between the shoe bushing and the shoe bracket on
both sides of the plow: 1) Remove the lynch pin (flip the locking ring over; then pull out the pin); 2) Pull the shoe
out of the bracket. Leave the shoe bushing in place on the shaft of the shoe. Put the necessary number of
washers on top of the shoe bushing; then 3) Reinstall the shoe and the lynch pin.
Lynch pin
Shoe
bushing
Shoe
Shoe
bracket
Washers installed
between bushing and
bracket to increase
height of plow
Step 5: Adjust spring tension.
Two coil springs control the pitch of the
plow. Greater spring tension pulls the top
edge of the plow back and causes the
bottom edge of the plow to move farther
forward. Decreasing spring tension has the
opposite effects. To adjust spring tension,
loosen the hex nuts on the inside of the
plow lip (nuts labeled “a” in the diagram).
Adjust the position of the nuts on the outer
side of the lip (labeled “b”) to achieve the
desired spring tension. Tighten the inside
nuts (a) against the lip to complete the
adjustment.
b
b
a
a
Top and bottom plates of plow
attachment frame
Flip
locking
ring
