Brother International BES-1240BC Instruction Manual - English - Page 248

Adjusting the Belt Tension

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Chapter 10 Standard Adjustment 7. Adjusting the Belt Tension The belt Tension is adjusted to the optimum tension at the time of shipment from the factory. However, as the belt is used,it becomes run in and may loosen around the machine pulley and motor pulley . Use the following procedure to check the belt tension. w q 8 mm of deflection in the belt 9.8 N (1 kgf) of pressure w slot e Place a gauge against the belt q, loosen the nut w, and then turn the nut e to move the slot to the appropriate position so that there is 8 mm of deflection in the belt q when 9.8 N (1 kgf) of pressure is applied. The machine operating direction is counterclockwise when seen from the machine pulley end. 246 BES-940BC • BES-1240BC

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Chapter 10
Standard Adjustment
BES-940BC • BES-1240BC
246
q
w
e
w
7. Adjusting the Belt Tension
The belt Tension is adjusted to the optimum tension at the time of shipment from the factory.
However, as the belt is used,it becomes run in and may loosen around the machine pulley
and motor pulley . Use the following procedure to check the belt tension.
Place a gauge against the belt
q
, loosen the nut
w
, and then turn the nut
e
to move the slot
to the appropriate position so that there is 8 mm of deflection in the belt
q
when 9.8 N (1 kgf)
of pressure is applied.
The machine operating direction is counterclockwise when seen from the machine pulley
end.
slot
8 mm of deflection in the belt
9.8 N (1 kgf) of pressure