Starting Thumper = Easy, CR125 = Help


Sponsoring Member
Sep 28, 2000
I did a search in the beginners forum and saw a good link for starting a CR500 but since this is a 125.....

Dear Thumper Buddies,

I can start my YZ400 in the cold, in the hot, after a stall in a race, just about any time. I have had this bike for a while and know it pretty well.

Now for the problem child, the '01 CR125. When it is cold outside (ie - In the morning at a race) I can not get that thing to start. I do the lean it over until gas comes out the overflow tube, pull the choke and kick drill but to no avail. Then I ask one of my veteran 2-stroke buddies to help me out and....BAM that sucker starts right up.

Have any thumper riders that dabble in the 2-stroke world overcome this embarrasing handicap?? I am getting tired of being snickered at and hearing things like "Well at least you got the hard one to start!"

Believe none of what you hear, and half of what you see.


Jan 31, 2001
I have a 93 CR125
And if it does not start in a couple of kicks .
I hold the Throttle WFO for a couple and it usually fires right up
Hope this works for you ;D


Dec 5, 2000
I have had an XR400(sold), YZ125(for sale), and YZ250F(new) recently and had the same problem as you when I first got the YZ125.
Everybody else seemed to effortlessly start there 2-stokes and I had big problems -- finally figured it out.
As opposed to the manly, full leg stroke that you give the 4 stroke, the 125 requires a quick hard stab. Forget about the leaning over stuff. Use the choke unless it is quite warm outside. Of course you have to give it a little throttle, unlike your thumper.
Most importantly -- check the plug if it doesn't start after multiple kicks. My 125 sometimes would start briefly, but wouldn't "clear out" and had fouled the plug. Other times it hadn't turned over at all, the plug was wet (from all the kicking). Replacing the plug at this point always worked. The problem was greatly improved with a leaner pilot jet.

Good luck, and enjoy the ease of starting once it's warmed up and you stall or crash.

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