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running-in period, all engine parts have been run-in and other parts
engaged. Then, all parts shall be adjusted, all fasteners be tightened,
contaminated engine oil be replaced and filter element be replaced.
Timely making 1000 km maintenance can guarantee a long engine
life and the best engine performance.
Precaution
：
1000 km maintenance shall be carried out according to the
"Troubleshooting" in the manual. Pay special attention to the
"precaution" and "warning" in the section.
