Key tips for replacing the chain on a hand-cranked winch with a 10mm chain: · The entire chain set must be replaced: If the winch uses a double-row or triple-row chain, it is absolutely forbidden to use old and new chains together; all chains must be replaced at once to prevent accidents caused by uneven loading. · Check the sprocket: When replacing the chain, it is essential to examine the wear level of the lifting sprocket. If the tooth surfaces of the sprocket are severely worn, the sprocket itself should also be replaced, otherwise the new chain will wear out more quickly or may get stuck. · Ensure complete compatibility: The diameter, pitch, and strength grade (G80) of the replacement chain must match those specified by the manufacturer exactly.