Specifications

39
0 - 0.5 mm
<Low adjustment>
Set the chain onto the smaller chainring and the largest sprocket. Use a 2 mm
Allen key to turn the low adjustment bolt to adjust so that there is a clearance of
0 - 0.5 mm between the chain and the chain guide inner plate.
0.5 - 1.0 mm
<Top adjustment>
Next, set the chain onto the larger chainring and the smallest sprocket. Use a 2
mm Allen key to turn the top adjustment bolt to adjust so that there is a
clearance of 0.5 - 1.0 mm between the chain and the chain guide outer plate.
Move the front derailleur and the rear derailleur to all gear positions, and check
that the chain guide does not touch the chain.