Shimano SM-CD800 Dealer's Manual page 19

INSTALLATION/REMOVAL
E Type
4.
Temporarily mount the guide to the bracket and adjust the height.
(1) Temporarily mount the guide.
* If guide is not removed, it can be moved up and down by loosening the mounting
bolt half a turn. Be careful not to loosen the bolt excessively, as this will increase the
looseness of the guide and make position alignment difficult to perform.
(2) Adjust the vertical position of the guide.
* Set the guide so that the bottom edge of the chain and the bottom edge of the
guide overlap when viewed from the right crank side.
* Do not tighten the guide mounting bolt at this time.
(1)
Guide mounting bolt
(2)
Guide
Bottom edge of the
chain
19
Bottom edge of the
guide