Carb settings needed and Carb issues - Polaris ATV Forum
Polaris ATV Forum
Go Back   Polaris ATV Forum > Polaris Model Specific Discussions > Polaris Trail Blazer

Polaris Trail Blazer Discussions pertaining to the Polaris Trail Blazer

LinkBack Thread Tools Display Modes
  #1 (permalink)  
Old 08-24-2009, 07:21 PM
NolenGerke's Avatar
Junior Member
Member #1173
Join Date: Aug 2009
Location: florida
Posts: 11
Carb settings needed and Carb issues

i need the pilot air adjustments please.

Heres my carb issue: sometimes my bike's carb will stick and run at like half throttle. Itll freak me out so i kill the ignition and the bike still runs (think its dieseling). The cable itsself isnt sticking so i know its an internal thing. Think its either my floats or my pilot air. I notice alot of the time the bike idles higher then normal and the idle adjustment doesnt seem to bring it down. I know its idling high because it grinds the gears. Ive only ran this bike like 3 times and twice the throttle was funny.

Move the needle down, reset the floats or the pilot. What do you guys think?>>
Reply With Quote
Sponsored Links
PolarisATVForums is the premier Polaris ATV Forum on the internet. Registered Users do not see these ads, So Register, It's Free!
  #2 (permalink)  
Old 08-25-2009, 07:46 AM
Dirty Dawg Dale's Avatar
Polaris ATV Junkie!
Member #552
Join Date: May 2009
Location: Hill City, Minnesota
Posts: 527
What year and model is your machine?
Reply With Quote
  #3 (permalink)  
Old 08-25-2009, 03:36 PM
NolenGerke's Avatar
Junior Member
Member #1173
Join Date: Aug 2009
Location: florida
Posts: 11
2003 trailblazer. I started it today and the bike takes a while to come down when u rev it. All of this is occuring in neutral btw. I played with the float for a lil while ago because when i first got it, it overflowed the bowls. I adjusted it slightly to compensate.
Reply With Quote
  #4 (permalink)  
Old 08-26-2009, 04:30 PM
NolenGerke's Avatar
Junior Member
Member #1173
Join Date: Aug 2009
Location: florida
Posts: 11
ALLLRIGHT!!!! Found my 2 issues. Heres what i got to get my bike to run

Took the carb back apart. Found a bit of dirt AROUND my main jet so i cleaned that. Didnt effect performance. However, what i did fine was a bit of dirt in the secondary jet. A standard needle from clothing cleaned that hole right up.

I went to Mikuni's website and roughly based my carb around settings from this manual

Measure the tip of the float plate to the body of the carb where the gasket sits(remove gasket if u can) height wise as descibed. I used 16mm on a caliper(19.99 at Harbour Freight). Reassembled the carb and set the pilot air to 2.50 turns out. i left the idle screw all the way out. Bike starts and runs but still idles high.

Found an adjustment at the handle bars for the throttle cable. loosened that and Fixed my High idle problem. When i moved the throttle cable a bit it would cause the engine to rev so i zip tied it down. Also i ran the idle screw back in untill it started to rev the bike up a bit (so now the idle screw is actually doing something) and turned the bike back down a hair at the handle bars.

No problems!

P.S. I also converted the bike to mix fuel. I drained the oil tank at the tank and plugged the line with a screw and some zip ties (i know its ghetto but it works). I plugged it because i thought it could create a vacuum issue. I am running 40:1 and it runs fine with a decent amount of smoke. I converted it because i dont trust oil injection (fails on blasters who knows about trailblazers!) and because now i just mix one jug of fuel for my banshee and TB. Oh, and BTW, No extra screws left over
Reply With Quote
  #5 (permalink)  
Old 01-22-2013, 06:42 PM
mshuman01's Avatar
ATV Enthusiast
Member #25160
Join Date: Apr 2012
Location: tampa
Posts: 41
where do I locate the pilot ait to adjust it? Also, I tried going to the Mikuni website and it was garbage for finding my carb, all they had was new carbs...
Reply With Quote
  #6 (permalink)  
Old 01-22-2013, 07:18 PM
chillywilly's Avatar
Extreme ATV Enthusiast
Member #22343
Join Date: Jan 2012
Location: edge of civilization
Posts: 120
Air screw is one turn out from lightly seated. Main jet #130, pilot #40, float height is brass arm parallel to gasket surface.
2013 CanAm Outlander max xt500
2006 sportsman 450
2003 trailblazer 250
Reply With Quote
  #7 (permalink)  
Old 01-24-2013, 06:36 PM
dirtbilly's Avatar
Junior Member
Member #25240
Join Date: Apr 2012
Location: michigan
Posts: 20
Here is the image right out of the factory Polaris 2003 Trail Blazer service manual.

Last edited by dirtbilly; 01-24-2013 at 06:40 PM.
Reply With Quote
  #8 (permalink)  
Old 01-27-2013, 12:51 PM
Russ C's Avatar
Polaris ATV Legend
Member #11982
Join Date: Feb 2011
Location: Douglas Wyo
Posts: 4,243
Loosen handle bar adjust ment so there is 1/8 inch of slack at thumb throttle., only 2 screws on a 2 stroke carb, one is idle the other is pilot.
Reply With Quote

Lower Navigation
Go Back   Polaris ATV Forum > Polaris Model Specific Discussions > Polaris Trail Blazer

Search tags for this page
1999 polaris trailblazer 250 carburetor
2003 polaris trailblazer 250 carb mixing screw setting
how to adjust carb on polaris trailblazer 250
polaris 250 carb adjustment

polaris 250 trailblazer carb settings

polaris 250 trailblazer carburetor
polaris cyclone carb settings

polaris trailblazer 250 carb adjustment


polaris trailblazer 250 carburetor adjustment


polaris trailblazer 250 idle adjustment

trailblazer 250 carb adjustment
trailblazer 400 carb settings
Click on a term to search our sites for related topics.

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -8. The time now is 02:08 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.