Question about 1983 Yamaha XJ 400
The two most important aspects of four-stroke maintenance are frequent oil/filter changes, and regular valve clearance checks/adjustments. And some four-strokes (RMZ450 for example) have a manual timing chain tensioner that must be regularly checked/adjusted. Everything else is exactly like a two-stroke.
Posted on Nov 10, 2008
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Posted on Jan 02, 2017
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