How to assemble and lubricate a bicycle rear derailleur #fblifestyle Reassemble your bicycle’s rear derailleur by aligning the cage, pulleys, and spring mechanism in the correct order, then tightening the pivot bolts. Apply fresh grease to the moving joints and a light oil to the pulleys to restore crisp, smooth shifting. | Good Bicycle

Setting up your bicycle. Adjusting the gear shifter on a bike with different gears | Good Bicycle