1. Picture of BB of hard tail



2. Picture of ETR-B + BB Cup



3. Apply Grease onto BB Cup



4. Insert BB Cup into ETR-B Mounting hole



5. Position ETR-B so that it won’t rub against Chain stay



6. Tighten BB Cup into position



7. Insert Chainring/Crank into BB



8. Place Chain on top of Chain-ring and over pulley on the ETR-B



9. Rotate crank clock-wise



10. ETR-B is now functional



11. Ensure there is some slack in the chain when the ETR-B is not engaged


ETR-B can be adjusted to the Chainring size by loosening the extension bolt on the main body


Tension can be adjusted in two ways:
– The different mounting positions around the pivot
– Loosening the BB cup and rotating the body


The chain line can be adjusted by loosening the bolt on the pulley arm.