I'm about to drop my cylinder on my 90 cr250 and the powervalve flapper on the top of the case won't move. It's frozen in place. If its like the other bike then it should freely move and I need to set it facing forward when I drop the cylinder on. It doesn't look bent or anything. How do I know if its right or wrong?
The powervalve governor arm on case is stuck
- Thread starter cr250heap
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Properly in place, it moves slightly, doesn't it? A little slop here and there? Improperly in place binds up, or dirty/has issues, doesn't it? Or did I miss something, again? Vintage Bob
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- #4
Is the lever arm on this 90 cr250 supposed to be a few mm lower than the older ones? And the washer shim around the flapper thing is maybe pushed down is it supposed to be stuck in there or free like my other one?
It looks like maybe it got pushed down and now it wont turn but a mm and the shim thing is pushed into the groove. Am I right? HELP PLEASE
Today
It looks like maybe it got pushed down and now it wont turn but a mm and the shim thing is pushed into the groove. Am I right? HELP PLEASE
Today
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- #6
why do these 2 bikes spindle cams look different which ones broken?
If someone could just get me a picture of how a 90 cr 250 spindle cam looks before you set on the cyllinder thatd be great. How far does it raise out of the hole on the case? How far should it turn by your fingers? Why is it different than my other 87 cr250's spindle thing? Which bike is correct or are they both different designs? Should the spindle cam bushing (collar) be freely spinning or be pushed down in and tight to the case?
I want to know this before I drop my cyllinder on without the powervalve being aligned right. Oh and the spindle cam arm on the case moves only 1mm by hand could this be something frozen in there or will it not move until the motors running? Its keeping me from pointing the lever thing forward so I can do this right.
I see now that I have to remove a big flathead bolt on right side of motor to access the cr250 HPP engagement bolt. How do I remove this bolt? I'm soaking it with PB blaster but any attempt with screwdriver or vicegrips just uglies up my case.
If someone could just get me a picture of how a 90 cr 250 spindle cam looks before you set on the cyllinder thatd be great. How far does it raise out of the hole on the case? How far should it turn by your fingers? Why is it different than my other 87 cr250's spindle thing? Which bike is correct or are they both different designs? Should the spindle cam bushing (collar) be freely spinning or be pushed down in and tight to the case?
I want to know this before I drop my cyllinder on without the powervalve being aligned right. Oh and the spindle cam arm on the case moves only 1mm by hand could this be something frozen in there or will it not move until the motors running? Its keeping me from pointing the lever thing forward so I can do this right.
I see now that I have to remove a big flathead bolt on right side of motor to access the cr250 HPP engagement bolt. How do I remove this bolt? I'm soaking it with PB blaster but any attempt with screwdriver or vicegrips just uglies up my case.
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You may have the most complicated exhaust valve on the planet, you really need a manual. http://www.bikebandit.com/houseofmotorcycles/1990-honda-cr250r/o/m11897#sch414464
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- #8
Thanks. I've got a manual for up to year 87. It includes how to do the HPP adjusting. But didn't include the new gimmick for laying the cylinder on. After freaking out yesterday I'm just going to try it how the old one goes and hope it engages. Or isn't broke.
