Yz125 'arping problem

[Jmbrown0311]

Hi,
I have a YZ 125 2 stroke. I have just recently started having a specific problem with my bike and hope to get a clear answer here. Every time I start up my bike, engage the clutch and put into 1st gear. Before I can even get going my bike will rev and arp out as if the throttle is being engaged. Yet I'm not engaging it. It's so bad that I have to cut engine kill switch. Anyone with answers to this or have ideas plz post here and email me? Also clutch was just replaced 15 hours ago. Email me at: jmbrown0311@gmail.com

 

[SRAD97750]

Sounds like the throttle slide is installed backwards, or the float isn't set correctly giving you a 'lean rev.' -BIG DAN

 

[Jmbrown0311]

Ok, I'll take a look. That did not cross my mind at all. Thanks for the insight. I hope that is what's wrong.

 

[Mihylo33]

The bike makes an arp sound?
Sounds like the clutch may have been installed wrong or severely notched if it's the sound I'm thinking of.

 

[ossagp]

Does the motor begin to rev (gain speed) when you pull the clutch in? By the way, I had a high school teacher named Robert Arp. He took a real dim view of all that we did with his last name (everything from the hair lip dog joke, to course references, such as "are you going to 'arp class' today?"

 

[MikeinFresno]

does it run fine until you put it in gear? Does it do this when you turn the bars?

 

[Jmbrown0311]

I figured it out...I feel so stupid. Apparently when 2 strokes are about to run out of fuel they rev high till they are empty. I refueled and it fixed problem. Thanks for everyone's responses!