![Meghna Shimano Tourney RD-TY300 Bike Rear Derailleur 6/7-Speed for Road and Mountain Bike Direct Mount for Unisex - Walmart.com Meghna Shimano Tourney RD-TY300 Bike Rear Derailleur 6/7-Speed for Road and Mountain Bike Direct Mount for Unisex - Walmart.com](https://i5.walmartimages.com/asr/712e7e7f-6da5-4bcc-9d2a-de44056ab2a6.fc31055e0589448d5bf869d250d39c0b.jpeg)
Meghna Shimano Tourney RD-TY300 Bike Rear Derailleur 6/7-Speed for Road and Mountain Bike Direct Mount for Unisex - Walmart.com
![Amazon.com : ENBO Shimano Bike Rear Derailleur RD-TY300 6/7 Speed Rear Derailleur Road MTB Bike Mountain Bike Direct Mount : Sports & Outdoors Amazon.com : ENBO Shimano Bike Rear Derailleur RD-TY300 6/7 Speed Rear Derailleur Road MTB Bike Mountain Bike Direct Mount : Sports & Outdoors](https://m.media-amazon.com/images/I/61MFnebWxSL._AC_UF1000,1000_QL80_.jpg)
Amazon.com : ENBO Shimano Bike Rear Derailleur RD-TY300 6/7 Speed Rear Derailleur Road MTB Bike Mountain Bike Direct Mount : Sports & Outdoors
![Mystery adjustment on Shimano Tourney rear derailleur - Is this "B" adjustment or something else? TIA : r/bikewrench Mystery adjustment on Shimano Tourney rear derailleur - Is this "B" adjustment or something else? TIA : r/bikewrench](https://preview.redd.it/yzocx4o947581.jpg?auto=webp&s=a98c07f6550da79049c94f44a3430be1f8681e58)
Mystery adjustment on Shimano Tourney rear derailleur - Is this "B" adjustment or something else? TIA : r/bikewrench
![Rear derailleur B-screw does not affect upward limit on guide cog. Cog slams into the cassette with any small drop or bounce on a rock or root. It's very loud, and I Rear derailleur B-screw does not affect upward limit on guide cog. Cog slams into the cassette with any small drop or bounce on a rock or root. It's very loud, and I](https://external-preview.redd.it/DHjNEn5PAYPunuyt2_N2UhJ2m_F6zQsy5Mr6Axhu0Nc.png?width=640&crop=smart&format=pjpg&auto=webp&s=a19a06a9c3672c19c9c0427ccf996888bf8e9070)
Rear derailleur B-screw does not affect upward limit on guide cog. Cog slams into the cassette with any small drop or bounce on a rock or root. It's very loud, and I
![Won't shift in to 1st gear. Shimano Tourney derailleur. 7 speed cassette. Can't get it to shift into 1st because top pulley is touching largest sprocket. I can't find the adjustment on Won't shift in to 1st gear. Shimano Tourney derailleur. 7 speed cassette. Can't get it to shift into 1st because top pulley is touching largest sprocket. I can't find the adjustment on](https://i.redd.it/gnt997z9h3m61.jpg)
Won't shift in to 1st gear. Shimano Tourney derailleur. 7 speed cassette. Can't get it to shift into 1st because top pulley is touching largest sprocket. I can't find the adjustment on
![shimano - Sprocket touching the biggest cog no matter B screw...how do I fix? - Bicycles Stack Exchange shimano - Sprocket touching the biggest cog no matter B screw...how do I fix? - Bicycles Stack Exchange](https://i.stack.imgur.com/Bp9gI.png)
shimano - Sprocket touching the biggest cog no matter B screw...how do I fix? - Bicycles Stack Exchange
![shimano - Sprocket touching the biggest cog no matter B screw...how do I fix? - Bicycles Stack Exchange shimano - Sprocket touching the biggest cog no matter B screw...how do I fix? - Bicycles Stack Exchange](https://i.stack.imgur.com/XiUmI.png)