Fully equipped with a can of Muc-Off Bio Chain Cleaner, capable of 35 cleans from one single tin, the Chain Doc Chain Cleaner is ready to rid your chain of dirt, grime and crud immediately. Simply clip the machine to your chain and spin it through the Doc’s body while spraying the cleaning fluid on to your links. Within just 19 seconds, your chain will be spotless and ready for lubing. Turning an essential and arduous chore into a super-speedy job, the Chain Doc Chain Cleaner is a must-have for any rider who regularly gets down and dirty. Directions for use: Step 1 – Position bike upright or mount in a workshop stand. Shift chain to middle front chainring and third smallest cassette for optimum chain tension. Step 2 -Hold the chain cleaning machine in your left hand with your thumb over the spray button and forefinger over the Chain Doc trigger. Position the open Chain Doc over the chain. Step 3 – Pull trigger to close the Chain Doc. Spin pedals backwards for 2 to 3 revolutions while spraying chain cleaner through Chain Doc. Continue for a further 2 to 3 revolutions without spraying. Step 4 – Rinse chain and chain cleaning machine thoroughly with clean, fresh water.