even with the most strict quality control process,
every machine will wear after a period of running,

for example, if the Ratio Wheel Belt will loose/ no-tension in future,
then you may need to adjust it or even replace a new one.

how to replace it?
here's a lesson may help you:

We named the 5 screws that fixed the belt to No.①②③④⑤. As below:
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1. Loosen the No⑤ screw first(no need to take it out), then loosen No①②③④, as well.
After that, the belt becomes loose. As below:
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2. Take out the old belt and replace with the new one. Try to push the motor with hands
toward No⑤screw to tight enough.
Fix No①②③④screws a little just to make the motor unable to move
(please do not fix these four screws completely at this step),
then fix No⑤screw to the most, when you feel the belt becomes tight enough,
then you can fix No①②③④ screws to the most. As below:
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Test the machine, if it works normally, that means you have replaced the belt successfully.

for more tech support, please visit our website:
Troubleshooting List