This process will depend on the kind of bike and chain you have. The pictures you took earlier of your drivetrain should be helpful. Thread one end of the chain through the drivetrain so it meets its opposite end at the top or bottom midpoint between the wheels.  Chain links should fit onto the points of gears and run smoothly through all component parts of the drivetrain. If you feel resistance, it’s likely you’ve inserted the chain improperly. If you find yourself really struggling to get the chain back in the drivetrain, look up a tutorial on YouTube or do a keyword search for your bike’s manual online. Use your fingers to bring the ends of the chain together at the midpoint between the wheels. Slide the pin end-link into the slot of the opposite end-link. In many cases, you’ll feel the link click into place. When properly refastened, the master link should align evenly with other links. If the master link is fastened unevenly, it could cause the chain to warp, ruining it. With the master link connected, you’re finally ready to give the wheels a spin. The chain should pass smoothly through the drivetrain. If there is unnatural resistance or irregular noises from the chain (like groaning, scraping, or grinding), you may have reinstalled the chain incorrectly. Many small errors can be corrected with your fingers while the chain is still on the bike. In some cases, you may need to remove the chain completely and reinstall it from scratch. the chain. A quality chain lube will protect your chain from further rusting and the buildup of grime. Position the nozzle of the lube above the midpoint of the chain. While squeezing out a thin, steady stream, spin the wheels of the bike. When the chain returns to its starting position, it’s lubed and ready to ride.

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Write a summary of the previous text in Indonesian:
Pasang kembali rantai di drivetrain. Kencangkan kembali sambungan mata rantai. Periksa gerakan rantai. Lumasi