To give our customers the best shopping experience, our website uses cookies.  Learn More

Tusk Fuel Mixture Screw

Choose a machine

User Tip: If you're unsure of your vehicle type, you may skip the machine type selection box.

Use one of my Saved Machines
Tusk Fuel Mixture Screw
  • View Larger
  • Multiple Views
  • Video

Tusk Fuel Mixture Screw

114034

Our Price: $11.99

MSRP: $14.99 - You save $3.00 (20% off)

View Product Details

Select type, year, make and model above

Live Help

Additional Videos

How To - Tusk Fuel Mixture Screw Install & Tuning

How To - properly clean a carburetor

RM YouTube Channel
SUBSCRIBE

Details

  • Replaces the stock fuel screw that is difficult to adjust.
  • Easy grip knob with laser etched numbers for simple and accurate adjustments.
  • Comes complete with new fuel screw spring, washer, and O-ring.
  • Machined from 6061-T6 aluminum.
  • Fits most Keihin FCR Carburetors.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

Tusk Fuel Mixture Screw Reviews

Rocky Mountain ATV/MC gift card Each review submitted enters you into a
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
WRITE A REVIEW
4.6 / 5.0
198 Reviews
5 Stars
4 Stars
3 Stars
2 Stars
1 Star
151
31
6
4
6
Value
4.8 / 5
Durability
4.7 / 5
Ease of Installation
4.7 / 5
Fitment
4.8 / 5
Performance
4.7 / 5
Recommend it?
Yes (92)
No (2)
Recommend it?
Yes
Great product
Very nice proxy for perfect

-m-2007 YAMAHA YZ450F--
April 25, 2020
Santa Paula, CA, US
Age: 45-64
Purchased
1 month ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Awesome.
This adjustment screw works awesome. It's really easy to assist my a/f mixture now.

-m-2009 KAWASAKI KX250F--
April 21, 2020
Payson, UT, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
>281 lbs.
Height:
6'4 - 6'6
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product
Great product. Was exactly what I was looking for. Highly recommended. Lasts a long time.
April 20, 2020
Bakersfield, CA, US
Purchased
2 months ago
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Great product
This is a great thing to have makes it easy to adjust the idle I love it

-m-2008 HONDA CRF250R--
April 11, 2020
Eagle mountain, UT, US
Age: 15-24
Purchased
8 months ago
Gender:
Male
Weight:
131 - 160 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Tusk Fuel Screw
Allowed me to make changes on an FCR carb without any tools. Recommend it!

-m-2005 KTM 450 SX 4-Stroke--
March 30, 2020
Portland, OR, US
Age: 25-44
Purchased
5 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Crf150 Air/fuel screw
A little difficult to get finger to adjust on a crf150 but does what it was designed for.
March 29, 2020
Adrain, MI, US
Purchased
2 months ago
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
It really makes adjusting the idle mixture possible!
The fuel screw works really good. On my 06 250x it is still a bear to adjust even with this screw but now possible. The screw itself works great but on the bike there is very little room to get your hand in there. Overall I am very happy with it.

-m-2006 HONDA CRF250X--
User submitted image
Added Mar 23, 2020
March 23, 2020
GALWAY, NY, US
Age: 25-44
Purchased
3 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Adjustable
My air, fuel was not adjustable, this fixed that. Just makes sense to install when the carbs off the bike!

-m-2008 KAWASAKI KLX450R--
February 25, 2020
Dayton , NV, US
Age: 45-64
Purchased
3 months ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
5'10 - 6'0
Value
4 / 5
Performance
4 / 5
Recommend it?
Yes
Fuel air screw mix needle.
Seems to work fine so far. The threads seem a bit weak but has done its job to this point.

-m-2009 YAMAHA WR450F--
February 17, 2020
Idaho Falls , ID, US
Age: 45-64
Purchased
3 months ago
Gender:
Male
Weight:
221 - 250 lbs.
Height:
6'1 - 6'3
Value
5 / 5
Performance
5 / 5
Recommend it?
Yes
Fuel Mixture Screw
It was a little tough to get the stock screw out but this thing is great. Watch the video with this item for help on performance adjustment. Watch it again in efforts of remembering what you need to do to adjust it while riding and your idle seems off when the motor gets really hot.

-m-2003 HONDA CRF450R--
February 7, 2020
Farmington, UT, US
Age: 25-44
Purchased
1 year ago
Gender:
Male
Weight:
191 - 220 lbs.
Height:
6'1 - 6'3
Show more
Rocky Mountain ATV/MC gift card Each question or answer submitted enters you into a:
$100 gift card monthly drawing and a
$500 gift card quarterly drawing!
Start typing your question and we'll check if it was already asked and answered. Learn More
Browse 8 questions Browse 8 questions and 8 answers
Will this work on a 2013 CRF230F?
Eli S on Mar 22, 2019
BEST ANSWER: We do not have a Tusk fuel mixture screw for your machine at this time.
Will this fit a Keith in CV40 carb for a KLR?
Brian K on Jan 26, 2018
BEST ANSWER: This will not fit the KLR carb.
Will this fit kiehin 28mm pwk carbs?
A shopper on May 28, 2020
BEST ANSWER: Yes, Should fit.
I have a 2005 trx 450r, it says it fits my bike. But this air fuel screw is made for FCR carbs, which the 2005 trx 450r doesnt have a FCR carb. Will this still fit?
A shopper on Mar 31, 2020
BEST ANSWER: These are machine specific and are based off of OEM specifications. If your machine is listed in the drop down menu, then it will fit.
Will this fit a 2003 suzuki ltz 400?
Michael P on Jun 2, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2019 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Will this fit a 2003 suzuki ltz 400?
Michael P on Jun 2, 2019
BEST ANSWER: To see if this part will fit your machine please enter the make, model, and year into our "Choose a vehicle" drop down boxes found above the product image. If your machine is not listed, we may not carry the right item for your application. If you have a 2019 year model but don't see your machine as an option, please contact a tech via Live Chat or call us at 1-800-336-5437 for assistance.
Does this work on the FCR 39?
Joe D on Jul 16, 2018
BEST ANSWER: These are specific to machine. So if you know exactly what machine that carburetor is from it will work when selected for that machine.
Does this work on all carburetors?
A shopper on Jan 28, 2017
BEST ANSWER: It works on all the machines that we have a listing for in the drop down menu.
RM Cash ProgramParts Finder