There are two screws on the front transmission, marked “H” and “L” next to them, which limit the range of movement of the transmission. Among them, “H” refers to high speed, which is the large cap, and “L” refers to low speed, which is the small cap.
At which end of the chain you want to grind the derailleur, just turn the screw on that side out a little. Don’t tighten it until there is no friction, otherwise the chain will fall off; in addition, the shifting action must be in place. If the front wheel chain is on the outermost ring and the rear wheel chain is on the innermost ring, it is normal for friction to occur.
The H-L screw is mainly adjusted according to the shifting situation. When adjusting the friction problem, be sure to make sure that the chain is still rubbing against the same side edge of the front and rear gears before adjusting.
Precautions for using mountain bikes:
Bicycles should be scrubbed frequently to keep them clean. To wipe the bicycle, use a mixture of 50% engine oil and 50% gasoline as a wiping agent. Only by wiping the car clean can faults in various parts be discovered in time and repaired promptly to ensure the smooth progress of training and competition.
Athletes should wipe down their cars every day. By wiping, it can not only keep the bicycle clean and beautiful, but also help check the integrity of various parts of the bicycle, and cultivate athletes’ sense of responsibility and professionalism.
When inspecting the vehicle, pay attention to: there should be no cracks or deformations in the frame, front fork and other parts, the screws in each part should be tight, and the handlebars can rotate flexibly.
Carefully check every link in the chain to remove cracked links and replace dead links to ensure normal operation of the chain. Do not replace the chain with a new one during the competition to avoid the new chain not matching the old gear and causing the chain to fall off. When it must be replaced, The chain and flywheel should be replaced together
Post time: Nov-29-2023