Shimano BB-MT800 Dealer's Manual - Page 21
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MAINTENANCE
Replacing chainrings
Set the middle chainring so that the marked side faces inward and the alignment tab is
positioned under the crank arm.
Install the largest chainring and middle chainring using decorative nuts as shown in the
illustration.
(E)
(B)
2
To be continued on next page
(A)
(D)
(C)
21
(A)
Crank arm
(B)
Alignment tab
(C)
Decorative nuts
(D)
Mounting bolts
(E)
Marking
Largest chainring / Middle chainring
Tightening torque
10 - 12 N·m