Jump to content

Search the Community

Showing results for tags 'airscrew'.

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Dirt Bikes
    • General Dirt Bike Forums
    • Make / Model Specific
    • Dirt Bike Technical Forums
    • Special Interest Forums
    • Dirt Bike Regional Discussion
  • General
    • General Forums
  • ATV / UTV
    • General ATV / UTV Forums
    • Make/Model Specific
    • ATV / UTV Regional Discussion
  • Inside TT
    • Community Sponsors
    • Advertise on ThumperTalk
    • Site Usage, Bug Reports & Suggestions
  • ThumperTalk Clubs FAQ & Help's FAQ/Help & Discussion
  • Chadwick, Missouri: Information & Riding's Topics
  • So Cal Flattrack's Club Forum
  • Thumperjunkies - Ottawa & Eastern Ontario Riders's Discussion
  • Jersey MX and offroad's Places you ride
  • Jersey MX and offroad's Discussion
  • SE Ohio Riders's Club Discussion
  • NorCal Trail Riders's Topics
  • Northern Nevada Roaming Bastards's Discussion
  • North Texas Enduro Riders's Topics
  • Twistin it in PHX's Introduce yourself!
  • Twistin it in PHX's Discussion
  • So-Cal Track and Trail's 1st club ride coming soon...
  • Moto TnT Track & Trail's Moto Tnt Racing Questions
  • Moto TnT Track & Trail's Rider's Forum
  • Dualspot Riders Orange County So~CaL's Club Discussion
  • Chester County PA DS/Adventure's Im here
  • Chester County PA DS/Adventure's Ride Dates & Times
  • Niagara region's Club Discussion
  • Walker Valley Single Track Riders's Unanounced ride(s) recap(s)
  • Walker Valley Single Track Riders's Supplements & recovery aids
  • Walker Valley Single Track Riders's Bikes maintenance & restoration
  • Walker Valley Single Track Riders's Safety gear & apparel
  • Walker Valley Single Track Riders's General
  • Walker Valley Single Track Riders's Riding technique
  • Sacramento Area Trail Riders's Club Discussion
  • Sacramento Area Trail Riders's Info from another club
  • NC woods riders.'s Club Discussion
  • Colorado US Route 50 Rides's Club Discussion
  • Middle GA Off-Road & Trails's Club Discussion
  • WNY Dual Sport Trail Riders's General Discussion's
  • SoCal JUST RIGHT riding club's SUNDAY 10.13
  • OREGON Riders Club's Club Discussion
  • Glamis bike crew's Topics
  • Glamis bike crew's One last trip
  • Glamis bike crew's Let’s hit the dunes!
  • South Texas Dirt riders's Topics
  • PNW Trail Maintenance Club's Trail equipment and how to carry it
  • PNW Trail Maintenance Club's General Discussion
  • PNW Trail Maintenance Club's Introduce Yourself
  • New England riders's Events
  • SC Dirt Riders's Topics
  • Club RMX's Photos and videos
  • Club RMX's Engine & Engine tuning
  • Club RMX's Chassis, Suspension, & tuning
  • Club RMX's Electrical and electronics
  • Club RMX's Body, fender, & Graphics
  • Club RMX's Build projects
  • Club RMX's Everything else
  • Club RMX's Classifieds
  • North GA Trail Riders's Topics
  • NorOnt Trail Riders's Topics
  • Virginia Supermoto's Club Discussion
  • Kentucky Trail Riders Club's Topics
  • ADK ADV's Notes
  • Pennsylvania Dirtbike Riders's introductions
  • Missouri Dual Sport Riders's General discussion
  • Missouri Dual Sport Riders's General discussion
  • Missouri Dual Sport Riders's Adventurepalooza 2021
  • Missouri Dual Sport Riders's Organized ride section
  • Missouri Dual Sport Riders's Gpx files
  • Missouri Dual Sport Riders's For sale items
  • Yamaha WRz's Topics
  • Crete Boys TV's Topics
  • Crete Boys TV's Topics
  • Long Island Dirt's Ride Planning


  • Powersports Gear & Apparel
  • Universal Parts & Accessories
  • Parts & Acc. - Japanese Bikes
    • Honda Parts & Accessories
    • Kawasaki Parts & Accessories
    • Suzuki Parts & Accessories
    • Yamaha Parts & Accessories
  • Parts & Acc. - Euro Bikes
    • Beta Parts & Accessories
    • Husqvarna Parts & Accessories
    • KTM Parts & Accessories
    • Other Euro Parts & Accessories
  • Motorcycles
    • Off-Road Motorcycles
    • Dual Sport Motorcycles
    • Street Motorcycles

Products Categories

Vehicles Categories



  • Speed Through Fitness
  • Moto Mind
  • Test Blog
  • Trail Tales of Enduro in South America
  • Michael File
  • Jason Bohl
  • Cole B
  • Loves dirt
  • RodneyBell
  • Johnnyship
  • Fcr39 jetting


  • ThumperTalk Clubs FAQ & Help's Club Calendar
  • Chadwick, Missouri: Information & Riding's Events
  • So Cal Flattrack's Club Calendar
  • So Cal Flattrack's Events
  • Thumperjunkies - Ottawa & Eastern Ontario Riders's Club Calendar
  • Thumperjunkies - Ottawa & Eastern Ontario Riders's Events
  • SE Ohio Riders's Events Calendar
  • NorCal Trail Riders's Ride & Event calendar
  • Northern Nevada Roaming Bastards's Stuff that happens on a particular date
  • Central Washington riders's Events
  • Central Washington riders's Group ride?
  • Central Washington riders's Events
  • Dualspot Riders Orange County So~CaL's Events Calendar
  • Niagara region's Club Events Calendar
  • Walker Valley Single Track Riders's I love Mondays trail ride
  • Sacramento Area Trail Riders's Events Calendar
  • Sacramento Area Trail Riders's First round of Hollister 2020
  • NC woods riders.'s Club Calendar
  • Colorado US Route 50 Rides's Club Calendar
  • Middle GA Off-Road & Trails's Club Calendar
  • OREGON Riders Club's Club Calendar
  • PNW Trail Maintenance Club's Calendar
  • North County San Diego - DirtbikesWithDad.com's 2020 Calendar
  • Club RMX's Calendar
  • North GA Trail Riders's Ride Calendar
  • Virginia Supermoto's Club Calendar
  • Kentucky Trail Riders Club's Events

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start












Found 8 results

  1. hey My name is connor and i have a 1985 honda xr 600r with duel carbs. when i received it it had great compression and no spark. i put a ricky stator in it and spark is great. i went to start it up after i cleaned the carbs thoroughly, but i am afraid to split them apart. it started up and was riding great, but also shooting fuel out of the air box, the next day she just cut off while riding and wouldnt start back up, i took of the carbs and on the low end carb the jet was unscrewed. i screwed it back in and but the carbs back on, and the bike was hard to start but wont idle nor rev up it just bogs then dies, please help!!!!!!
  2. Hey everyone just got a quick question about my bike since I couldn’t find anything on the next, Ive recently brought my first 2stroke it is a 2007 yz250 2stroke and It’s been oil fouling plugs like crazy at least every second ride, I’ve checked the top end and that seems fine so I’ve decided to set the air screw back to default since the previous owners must of messaged with it. does anyone happen to know the factory setting for the air screw on my bike, because I don’t feel like blowing it up anytime soon😂 thanks
  4. I bought a lean running '03 CRF230F. The previous owner had swapped in a high compression piston, removed the baffle, but did not adjust the carburetor or jetting (to my knowledge). The bike would regularly backfire on deceleration. Anyways, I did the fuel screw procedure and I have adjusted the fuel screw to 2 3/4 turns out because that is where it idles the best and the bike now only backfires when shifting into 2nd occasionally. However, acceleration in high gears feels a bit delayed and boggy. Too rich? Too lean? Should I bring my fuel screw in to 2 1/2 turns instead (bike seemed to idle just as good at this adjustment, with a little bit more popping while riding). My spark plug looks good to me, but I'm open to different opinions. Bottom line: Slight popping when shifting from first to 2nd, high gear acceleration feels delayed but I can't tell if it's a lack of fuel (lean) or a bit too much (rich). What's the next step? Thanks!
  5. My 2001 cr250r won’t idle more than 6-7 seconds after it is warmed up. I tried messing with the air screw and idle screw and I could not get it to idle. The bike is also running rich since I fouled 3 plugs within a short amount of time and they were black in color. I looked at the pilot and main jet and both were the stock size. Getting the airscrew in the correct place may stop it from fouling. My question is would dropping the main jet a size help in idling? Thanks for the help
  6. Picked up a 2003 KLX400R a few months ago and since then I've been having some issue with my idle. At first, the idle seemed way too high so I turned it down and the bike would barely stay running, so I turned it up again. After doing that, the bike would hang revs and would take a few seconds to return to idle. I took the carb apart, and replaced the vacuum plate seal (since this has the FCR39 and heard that the seal could be warped due to carb cleaner). After doing that I was still having the same issue: the bike would still die on idle, regardless of how high or low the idle is set. Here is my question: what should I do to fix it? Is it possible that the idle air screw is set incorrectly? I set it to the 2.5 turns out that I've been seeing online, but that seems like it's either way too much or way too little air. The bike has the stock exhaust, and the 3x3 mod has NOT been done to it.
  7. Hey guys! I recently cleaned and rejetted my carb. I live at about 8k feet. Here are my specs; 2009 kx250f Main: 160 Pilot: 42 Needle: Stock (I think it is set to the 4th clip) Now, upon putting it back together I started her up with the choke on and had no issue. I turned off the choke and it abruptly died on me. After a few adjustments I figured it was a dirty pilot jet. I took it out and sure enough it looked gunked up inside. I cleaned it but I had a brand new 42 and decided to use that and save the old one as an extra. After I got it put back together I was able to get it to idle without the choke on but I had to loosen my air/fuel screw quite a lot. Its at about 3.5 turns out. Still in the learning stages on all this so I am not too sure what I should do. I am guessing that a different sized pilot would do the trick but I am not sure if I should go up or down in size. I was thinking about putting a 45 in it. Most of the forum posts I have read everyone is running a 42 or 45 with best success. What do you think?
  8. Hey guys, I recently bought a 2001 DRZ400s with 5000 miles and I'm having some trouble jetting it properly even after buying and installing the JD jet kit. Important bits: The bike has a stock exhaust and I did the 3x3 airbox mod. Previously it had the 22.5 pilot, 162 main, and the fuel screw had been adjusted (brass removed but stock screw). With this setup it was a quick little bike, but it popped A LOT on deceleration and it missed a little on idle. Now I've installed the JD kit with 22.5 pilot, 150 main, extended screw at 2.5 turns out, and blue needle at 3rd position. Currently with this setup it feels noticeably slower but it seems to run better, if that makes sense at all. It idles well so I assume the pilot and fuel screw are adjusted properly and it doesn't pop at all now on decel, but it feels really down on power especially in the top end. When I go WOT and then back off a little it seems to accelerate a little more which leads me to believe the main jet is too SMALL, but I'm already at a 150 with stock exhaust...that said, it had a 162 and seemed more powerful. Huh. My next step is to pull the spark plug and see what it tells me, but I'm hoping someone has some input for me. Am I the only one the JD kit hasn't worked out for? Thanks, J
  • Create New...