7-12
KRF
7.
Installation and Operation
7.
Installation and Operation
7.
Installation and Operation
6. Adjust the timing belt tension.
KR
F6R makes a tension adjustment using the attached bracket adjuster.
Bracket adjustment Tension adjustment bolt
Model number Bolt size
Tightening torque [N·cm]
KRF6R M3 × 10L 125
Bolt type: Hexagon socket head
cap screw
Pull it toward the arrow direction to adjust the tension. Adjust the belt tension to meet the values
as shown in the table below using the sonic tensimeter U-507 by Gates Unitta Asia Company.
The table also shows the pressing force and amount of impression for your reference, but we
recommend you adjust them by the tensimeter.
Model number Mounting tension [N] Pressing force [N]
Amount of impression D [mm]
KRF4R 11 to 20 0.7 to 1.3 0.9
KRF5R 11 to 20 0.7 to 1.3 1.1
KRF6R 14 to 26 0.9 to 1.7 1.2
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