rebuild rm 125 - TwoWheelForum: Motorcycle and Sportbike forums
 
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post #1 of 11 (permalink) Old 03-25-2007, 11:18 PM Thread Starter
 
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rebuild rm 125

i need free directions on to help me rebuild my 2001 rm 125..i have everything to do it just dont know how to do it..so if someone can help me out with it..it would be much appreceated
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post #2 of 11 (permalink) Old 03-25-2007, 11:23 PM
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Originally Posted by SMFB636 View Post
i need free directions on to help me rebuild my 2001 rm 125..i have everything to do it just dont know how to do it..so if someone can help me out with it..it would be much appreceated
What specifically do you need help with. Are you just putting a new top end in it or are you replacing the crank?
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post #3 of 11 (permalink) Old 03-25-2007, 11:58 PM
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Originally Posted by SMFB636 View Post
i need free directions on to help me rebuild my 2001 rm 125..i have everything to do it just dont know how to do it..so if someone can help me out with it..it would be much appreceated
Just start taking it apart, label everything, and take lots of pictures... Zip lock baggies and a Sharpie will be your friends...
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post #4 of 11 (permalink) Old 03-26-2007, 05:24 PM
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Originally Posted by onesickpsycho View Post
Just start taking it apart, label everything, and take lots of pictures... Zip lock baggies and a Sharpie will be your friends...
And muffin pans!






-Chris
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post #5 of 11 (permalink) Old 03-27-2007, 01:23 AM Thread Starter
 
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replacing a crank and a top end....good idea on zip lock bags and sharpies....dont have any muffin pans...idk how to split the case
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post #6 of 11 (permalink) Old 03-27-2007, 09:49 AM
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replacing a crank and a top end....good idea on zip lock bags and sharpies....dont have any muffin pans...idk how to split the case
If you have never done it before you may want to have someone who has help you. The top end is a piece of cake.
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post #7 of 11 (permalink) Old 03-27-2007, 09:58 PM
 
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The bottom end, to remove the crank, if the bearings are ball bearings that are pressed into the case, you'll be better off taking it to someone who knows how to do it, and see if they'll let you watch how to do it, because heating up the case to get the bearing race to come out is tricky and risky on those magnesium cases. been there done that. never again.
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post #8 of 11 (permalink) Old 03-27-2007, 10:09 PM
 
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if you don't have a good facility, or a bit of mechanical expertise I would highly advise against splitting the cases. As an mxer of 8 years (and mechanic) I would agree in saying that the top end is a breeze, but I would suggest that you try finding an owners manual.
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post #9 of 11 (permalink) Old 03-28-2007, 09:04 AM
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Just make sure when you do the top end, put rags down in the case to cover the crank so that you wont drop the cir clips down there when removing the old ones and installing the new ones. If you drop it down there, you will need to split the case apart to get to it. big pain in he ass, and you dont want to do that again after you just got done doing it to replace the crank. Make sure you use new gaskets and dont over torque your bolts.

One other side note, pull the jug off and inspect it before you buy a new piston. If you have to have the jug bored you will need to buy a piston that matches the new bore. Im not sure if the RM125 jugs are nikasil coated. IF so remember if you have the jug bored you will need to get the nikasil plating done again.
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post #10 of 11 (permalink) Old 03-30-2007, 03:05 AM Thread Starter
 
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well when i got the crank i got a new top end with it i have all new gaskets...my buddy races..so wht were gonna do is buy a service manual and then just folow it...but i dont know how to splint the case and im not sure if it will tell us
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post #11 of 11 (permalink) Old 03-30-2007, 10:48 AM
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well when i got the crank i got a new top end with it i have all new gaskets...my buddy races..so wht were gonna do is buy a service manual and then just folow it...but i dont know how to splint the case and im not sure if it will tell us
The service manual will tell you. Just be sure to label each part as you remove it so you can reinsall it properly and in the correct order.
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