2013 YZ450F Idle Issue

13 replies to this topic
  • Calhoun117

Posted November 26, 2013 - 02:36 PM


Hey fellas, just picked up a brand new 2013 450f yesterday. But the bike will not idle without the "choke" pulled out. Guys at the dealership yesterday said it just needed broke in a little. Well I rode it today for about 5 hours and the bike still will not idle without the "choke" plunger pulled out. Any ideas on why this is to save me a 35mile trip back to the dealership? Thanks again in advance!!

  • grayracer513

Posted November 26, 2013 - 03:14 PM


The cold start button you're referring to is also the idle speed adjustment.  Back it out a little as if unscrewing it.  That will raise the idle speed.

  • Calhoun117

Posted November 26, 2013 - 04:29 PM


Awesome bro thanks! That is most likely it, I will try when I get home. Thanks again brother

  • Calhoun117

Posted November 26, 2013 - 04:33 PM


Once again sorry for asking such a dumb question, I am just so use to carburetors and wasn't even aware there was an idle adjustment on these throttle bodies, thanks again

  • WouldsAssassin

Posted November 26, 2013 - 06:08 PM


That most likely is it. Please update when you get home and check it.

  • Calhoun117

Posted November 26, 2013 - 07:21 PM


Will do, working night shift so it won't be until the morning

  • Calhoun117

Posted November 27, 2013 - 10:13 AM


That was indeed it. As suspected.

Visit the ThumperTalk Store for the lowest prices on motorcycle / ATV parts and accessories - Guaranteed
  • grayracer513

Posted November 27, 2013 - 12:03 PM


So, what does that tell you about the "guys at the dealership" who you talked to?

  • Calhoun117

Posted November 28, 2013 - 09:48 PM


It simply amazes me. Before this bike I came off a 450 quad and those throttle bodies don't have idle adjustments per say like this bike so I didn't even think that was a option. I can't believe they didn't mention the idle adjustment

  • shortburb

Posted December 01, 2013 - 05:43 PM


New bike should have also came with the yamaha service book and small tool kit. It's pretty detailed.

  • Calhoun117

Posted December 03, 2013 - 05:04 AM


Yeah I dig the service Manuel, not to often you buy something new with such a detailed Manuel anymore. I made this thread kind of out of frustration from only having the bike one day and wasnt idling. I read through the book, some good shit in there

  • grayracer513

Posted December 03, 2013 - 07:24 AM


Be sure to look at page 1-11 regarding the quick fasteners.  Most people who haven't seen one of these can't figure them out.

  • Calhoun117

Posted December 03, 2013 - 07:35 AM


I've seen quic fasteners before, but yes I did read through/skim basically the entire book. Especially the EFI system, everything else I'm fairly familiar with.

  • Calhoun117

Posted December 03, 2013 - 07:44 AM


But thank you for your help and replies.

Related Content


Should I buy this bike? help....... by Numsa Hul

Dirt Bike   General Dirt Bike Forums   What bike should I buy?
  • * * * * *
  • 10 replies

The "going back to the other darkside" adventure... by Monk

Dirt Bike   Make / Model Specific   KTM   250/350/450/505 SX-F & XC-F (4-Strokes)
  • Hot  113 replies
WR Camshaft Swap Info - last post by jamesm113

WR Camshaft Swap Info

  • 0 replies

Yamaha YZ450F 2017 by Chris.GVS

Yamaha YZ450F 2017
  • * * * * *
  • 1 review
  • Last review by Tommyk_55
  • On January 15, 2017

Wilson the Blue Privateer by jetfuel

Dirt Bike   Special Interest Forums   Pro Racing
  • Hot  50 replies

Join Our Community!

Even if you don't want to post, registered members get access to tools that make finding & following the good stuff easier.

If you enjoyed reading about "" here in the ThumperTalk archive, you'll LOVE our community. Come join ThumperTalk today!

The views and opinions expressed on this page are strictly those of the author, and have not been reviewed or approved by ThumperTalk.