CRF50 Cam timing question

P

Placka

Member

Feb 25, 2005

2

0

• Feb 25, 2005

• #1

Does anyone know what the cam chain timing should be on the 04 CRF50? Sorry if I am wording this wrong..my son rode his new CRF 50 pretty hard last weekend and then we got caught in a flash flood and he rode it several times through some pretty deep water.....needless to say, my husband is now rebuilding it for my sons first race TOMORROW but he forgot to order the repair manual when he ordered the new parts. The bike is all put together but he needs to set the timing?? Any help???

Bridget

 

B

biglou

• Feb 25, 2005

• #2

It's almost impossible to do it wrong. Take the left side cover off, align the mark on the rotor/flywheel with the mark at 12 o'clock on the case, then, up front, align the circle on the cam chainwheel to the mark on the head (have to remove the round cover to see). Be sure the valves are closed (rockers on the "heel" of the cam lobes). btw-to get the round cam gear cover off, loosen the bolt (8 or 10mm hex head, I think) on the opposite side, then tap it to pop the cover loose, then unscrew it the rest of the way. Yes, the bolt goes all the way through the head.

I had a picture once upon a time, but I can't find it now...

 

P

Placka

Member

Feb 25, 2005

2

0

• Feb 25, 2005

• Thread starter
• #3

Thank you!!!

 

N

NicoleAnn

Member

Feb 26, 2009

5

0

• Feb 26, 2009

• #4

on how TOO??

How do you set the timing cam for a crf50 2007? Or does it not matter what year it is?

Please let me know! Thank - You

 

N

NicoleAnn

Member

Feb 26, 2009

5

0

• Feb 26, 2009

• #5

the crf 50 also had a 82 cc kit on it!!! not sure if that would matter at all.

 

B

biglou

• Feb 26, 2009

• #6

I'm almost positive it's the same, regardless. I don't think anything's changed on these. I had the big bore kit on mine too, and it's the same procedure.

 

N

NicoleAnn

Member

Feb 26, 2009

5

0

• Feb 26, 2009

• #7

someone please? we just put the parts on and waiting to ride before work , 18 mm carb and the 82 cc kit.

 

N

NicoleAnn

Member

Feb 26, 2009

5

0

• Feb 26, 2009

• #8

okay where gonna try it out right now thank you so much .

 

N

NicoleAnn

Member

Feb 26, 2009

5

0

• Feb 26, 2009

• #9

is the mark on the flywheel that i have to match up to the case mark a inch mark with a f on one side and the t on the other and a number in the middle

 

Patman

Pantless Wonder

LIFETIME SPONSOR

Dec 26, 1999

19,765

1

• Feb 26, 2009

• #10

-Line it up the bar to the right of the "T" with the mark on the case.
-Line up the "O" with the notch in the head.
-Don't for get to adjust the valves BEFORE you start it! .002 intake .003 exhaust
-Order service manual from Honda.

No it doesn't make a hill of beans if it's stock or modified the proceedure is the same. Just make sure the track knows the bike is not stock or there could be some tears or you might even have to take it apart again while there if contested.