Immediately after indexing the gears, It can be necessary to lubricate the chain. Utilize an acceptable chain lubricant and let it sit for a few minutes. Then, utilize a clean up rag to wipe off any surplus lubricant, you'd like the lube in the chain links not on the skin. https://raymondiaoco.total-blog.com/getting-my-indexing-bike-gears-to-work-58067145