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Discussion Starter · #1 ·
Hi every body!
I just got 2003 yz85 for my 13 year old son.
It looks like everything is in stock on this bike. I changed coolant, engine oil, spark plug and cleaned carburetor. I also put fresh gas (amsoil saber 90:1). Carburetor has all stock jetting. We went to the park and rode it as if we stole it for 3 hours. The bike idles and runs pretty good. I read on forums that if you change gas mix ratio, I need adjust-jetting carburetor. When we got home I pulled spark plug and took a pictures of it.
What do you guys think (see the puctures)?
By the way it's our first dirt bike.

Thanks for your feedback.
 

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Discussion Starter · #3 ·
Stock needle settings are a second grow from the top, so I moved it to the 1st one to see how it's runs. Idle is the same just need to go to park and check it out.
 
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