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2. Adjustment Using Head or Tail Pulley
On side to which belt is deviating, loosen hexagon socket set screw(*3) and slightly turn adjustment
screw(*4) clockwise. Head (or tail) pulley will then move outward on this side and belt will center itself.
Alternatively, on opposite side, if there is a space between frame end and pulley bracket, make
adjustment on this side. In this case slightly turn adjustment screw(*4) counterclockwise. Head (or tail)
pulley will then move inward on this side and belt will center itself.
Once adjustment is complete, be sure to retighten hexagon socket set screw(*3).
3. Adjustment Using Return Roller (if any return rollers are attached)
On one side, loosen return roller bracket(*5) attachment bolt(*6), and set return roller slightly
diagonally. Belt will then move to form right angle to return roller rotation axis.
NOTE: It is effective to adjust the closest return roller to tail pulley. (The closest return roller to tail
pulley alternates depending on direction of belt travel as shown in figure below.)
Normal direction of belt travel
Return roller
B
(the closest return roller
to tail pulley when running
belt in normal direction)
(the closest return roller to
tail pulley when running belt
in reverse direction)
Return roller
A
