Maintenance & Technical > KX500 Original

1990 kx500 power valve issue

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81cr450:
By load I mean place the governor in the clutch cover before you place it on the engine, "not" set the governor in the motor then put the cover on

The arm the 10mm nut retains is not indexed or keyed. Meaning you can put it in any position on the end of the shaft, when you tighten the nut it preloads the governor in the open position basically locking the powervalve closed.

Undo the nut , let shaft shaft return to its home position. Then hold the arm with pliers when you tighten the nut. Drop the pipe to verify the valves are closed , then use pliers to move the arm & see that they open fully & return fully to closed

X2 on water pump seal

kawirider1469:
Ok, got the clutch cover back off. I assume I just set the governor down into the clutch cover, then reinstall the cover?? Also, once all is hooked back up, should the power valve close on its on (like a stretched spring) or can I pull it out and it stays out? I can push the rod into the cylinder and pull it out and it stays where I let go of it at.

dave916:
governor in clutch cover will always be in closed position  [nothing to do here expect put it in the  grove }
push the kipps rod on the cylinder IN fully {closed position}
line up the  ,GOVERNOR  lever and tighten the 10mm nut

I would do this by removing the kipps rod collar {small circlip } and tighten the 10mm nut with the clutch cover off  , as any loading of the governor can have the needle bearings in goveror fall apart

dont forget to do ur water pump seal and bearing with clutch cover off 2x 608 c3 bearings and seal

 

kawirider1469:
After further inspection the governor was NOT hook onto groove!. thanks for all the replies and help! Now on to crank rebuild and new top end sleeve. You guys can throw out any advice on these subjects as well.. I'm not looking to build a race bike, just freshen the engine back to specs

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