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rev. 3/20/2019

Pg. 5

Secure the calibration 

screw.

Inspect the base ring for 

damage. If any cracks 

or mising portions 

are found, replace the 

assembly. The base 

ring must be glued to 

the gearbox housing. If 

it is not, please see the 

Preciso Adjustment Ring 

Replacement guide for 

further assistance.

If you have any 

questions, or encounter 

issues with this guide, 

please contact

[email protected]

Ridge 

intact

Flush with 

housing

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