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2000 Honda 400 EX timing chain tensioner

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I was wondering if i need to collapse the timing chain tensioner, and if so how do i do this, i am trying to put my 00 400 ex back together after installing a new piston?

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You will need to take the tension off the timing chain to put the top end back together. Here is a picture in which I have circled the timing chain tensioner. You can just remove the tensioner completely, or back it off with a tiny phillips head screwdriver. The adjustment is in the center of the cap on the outside of the motor that I circled. Take the cover off and stick the tiny screwdriver in the hole.

400exmotor-1.jpg

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I was wondering if i need to collapse the timing chain tensioner, and if so how do i do this, i am trying to put my 00 400 ex back together after installing a new piston?

on the tensor take out the phillps screw and the is a slot located in the hole witch will lock it in place will you insert the tesioner after bolt up turn the slot in the oppiste dircition to release.

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