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Just got a 1989 YZ490

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Hello,my name is Maks,i have a 1989 YZ490.

I have a questiong about carb settings and the hoses on the carb.

I am new to the 2 stroke world and any suggestions would be great,thanks.

Does eveything look good on the picture when it comes to hoses on the carb

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You really need to do an internet search for how to jet this specific model and year.

 

This is an extremely hard motor to jet correctly.

 

If you jet it too lean, you will have problems with detonation.

 

 

http://www.allthingsmoto.com/forums/f-30/yz-490-tips-tricks-head-mod-diagram-43867/

 

http://www.motoaction.se/pdf/53211%23(INST).pdf

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Took the carb off,it was all green and gumbed up.

And one side of the reeds was chipped.

 

What do you guys suggest for reed valves?

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