4. Maintenance and Inspection
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10) Attach the pulley cover, tighten up with the four M2.6 (for BA4/BA4U) or M3 (for BA6/BA6U,
BA7/BA7U) screws with using a hex wrench.
Type
Tightening Torque
BA4/BA4U
45.8N•cm
BA6/BA6U
BA7/BA7U
83.0N•cm
11) Put on the side covers on the both sides, and tighten the attachment screws (at arrows) for the
side covers.
Screw size: M2.5, M3 (BA4/BA4U), M3 (BA6/BA6U, BA7/BA7U)
For some stroke patterns, there is another attachment screw on the side cover between two
screws on right and left ends.
Make sure to remove them all.
Type
Bolt Diameter
Tightening Torque
M2.6 hex socket head cap screw
45.8N•cm
BA4/BA4U
M3 cross recessed pan head machine screw
41.4N•cm
M3 hex socket head cap screw
83.0N•cm
BA6/BA6U
BA7/BA7U
M3 cross recessed pan head machine screw
41.4N•cm
Screws
Pulley cover