Question about 1992 Yamaha FZR 1000
Posted by Anonymous on
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OEM parts for Yamaha
Fzr 1000 valve adjustment part 1
View topic 1993 FZR1000 EXUP valve adjustement
Posted on Mar 15, 2016
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Posted on Jan 02, 2017
It won't be valve timing or clearance. The fuel/air mix would be the culprit. Clean the carburetor with special attention to the idle circuit. Remount the carb with new manifold gaskets. A manifold air leak will mess up the mixture. Also, get a new spark plug one heat range colder than stock. Hope this helps out!
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Posted on Apr 07, 2009
Not sure about clearance levels, but can tell you there is no English manual for the XJR 400 - only Japanese. Try the XJR owners club. It's full of troubleshooting questions answered in the forums.
Hope this helped
Posted on Jul 27, 2009
Inlet .0024 (two and a half thou.)
Exhaust .006" (six thou.)
(6) Set the valves:
Set the valves on the cylinder on the COMPRESSION stroke. Put the wring wrench on the locknut on top of the valve, and turn it anti-clockwise. It will be tight. Turn it about one quarter turn, and keep the wrench on it. Then, using the crescent wrench turn the square headed screw either in or out depending whether you need more or less clearance. We are talking about fractions of a turn here. Then lightly lock the locknut, holding the square headed screw with the crescent wrench so it doesn't move, and check the clearance. Repeat until it's exactly right. When it's exactly right, tighten the locknut. Recheck.
(7) Rotate the engine one revolution exactly:
Shine the flashlight into either sparkplug hole and rotate the engine slowly so that the piston goes down once and comes back up. Stop when it's at Top Dead Centre.
(8) Now do the other cylinder:
Check the gap and set if necessary the other cylinder's valves
Repeat steps (5) and (6) for the other cylinder.
(9) Button it up:
Replace the valve adjustment covers, making sure to keep the gaskets or o-rings in place, the bike will have one or the other.
That's all there is to it!
Posted on May 01, 2010
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