Where is the fuel air screw on a warrior carb?
#1
My Warrior has been boging out alot when i go to give it full throttle, so i though it was ether (water in the carb, the fuel air screw, spark plug or something). And out got an idea.. and i dunno if the fuel air screw is in/out right.
#3
Here this info should help:
BEFORE you do ANYTHING involving jetting or tuning do this FIRST.
You need to set the fuel screw (on the bottom of the carb between the float bowl and the intake manifold) which is usually up in a tube cast into the carb body. You will need a narrow flat blade screw driver to do this.
Some people have been just going "3 turns out" or something like that..
You need to bottom the screw (lightly don't crank it down, you'll ruin it) and while the machine is running (it should be warmed up) turn it out from bottomed out to where you get the HIGHEST SMOOTH idle. It will get hi idle then start to get rough..turn it back in until it is smooth. Then set your regular idle to where you like it.
Adjusting the fuel screw will also tell you if you are too rich or lean in the pilot jet. OUT will RICHEN the mixture and IN will LEAN the mixture.
EXAMPLE: If you are at approx. 3.5 turns out from bottomed on the fuel screw this means that the adjustability of the fuel screw is at it's maximum (it will unscrew completely at approx. 5.0 turns out), you will need to go RICHER on the pilot jet.
If you are 1.5 turns out on the fuel screw that means you are at it's minimum (almost bottomed out), this means you are too RICH on the pilot jet and need lean out the pilot jet.
IF you do change the pilot jet to a different size be sure to RE SET the fuel screw to its highest smooth idle then set the regular idle screw to where you like it.
You should also re set the fuel screw whenever the temperature or humidity change. (say 90 degrees one day and 55 the next)
On the TOP end of the RPM range if things seem to be running bad DO THIS FIRST.
Get up to the RPM area where you think things are running bad and hold the throttle at a constant position, let the engine settle into that RPM then slowly back off the throttle...if the RPM seems to pick up and the machine runs better you are too LEAN and need to richen the main jet.
OR you can (while keeping the trouble RPM steady) pull the choke, if things get BETTER you are too LEAN and need to richen the mixture, if it gets WORSE you are too RICH and need to lean the mixture.
sO, don't get all flustered when you add a pipe or filter and it won't run. Do the above and you'll be on the right track
In MOST cases (because of that EPA static emissions test) you will be LEAN on both the fuel screw AND pilot jet.
Remember rich is good lean is bad.
That being said, make sure the main jet doesn't have a particle of dirt blocking it. My Wolvy was acting up again today with the exact same symptoms and the main wa partially clogged with a piece of something that just wouldn't pass thru and was causing all kinds of problems over 1/2-3/4 throttle.
BEFORE you do ANYTHING involving jetting or tuning do this FIRST.
You need to set the fuel screw (on the bottom of the carb between the float bowl and the intake manifold) which is usually up in a tube cast into the carb body. You will need a narrow flat blade screw driver to do this.
Some people have been just going "3 turns out" or something like that..
You need to bottom the screw (lightly don't crank it down, you'll ruin it) and while the machine is running (it should be warmed up) turn it out from bottomed out to where you get the HIGHEST SMOOTH idle. It will get hi idle then start to get rough..turn it back in until it is smooth. Then set your regular idle to where you like it.
Adjusting the fuel screw will also tell you if you are too rich or lean in the pilot jet. OUT will RICHEN the mixture and IN will LEAN the mixture.
EXAMPLE: If you are at approx. 3.5 turns out from bottomed on the fuel screw this means that the adjustability of the fuel screw is at it's maximum (it will unscrew completely at approx. 5.0 turns out), you will need to go RICHER on the pilot jet.
If you are 1.5 turns out on the fuel screw that means you are at it's minimum (almost bottomed out), this means you are too RICH on the pilot jet and need lean out the pilot jet.
IF you do change the pilot jet to a different size be sure to RE SET the fuel screw to its highest smooth idle then set the regular idle screw to where you like it.
You should also re set the fuel screw whenever the temperature or humidity change. (say 90 degrees one day and 55 the next)
On the TOP end of the RPM range if things seem to be running bad DO THIS FIRST.
Get up to the RPM area where you think things are running bad and hold the throttle at a constant position, let the engine settle into that RPM then slowly back off the throttle...if the RPM seems to pick up and the machine runs better you are too LEAN and need to richen the main jet.
OR you can (while keeping the trouble RPM steady) pull the choke, if things get BETTER you are too LEAN and need to richen the mixture, if it gets WORSE you are too RICH and need to lean the mixture.
sO, don't get all flustered when you add a pipe or filter and it won't run. Do the above and you'll be on the right track
In MOST cases (because of that EPA static emissions test) you will be LEAN on both the fuel screw AND pilot jet.
Remember rich is good lean is bad.
That being said, make sure the main jet doesn't have a particle of dirt blocking it. My Wolvy was acting up again today with the exact same symptoms and the main wa partially clogged with a piece of something that just wouldn't pass thru and was causing all kinds of problems over 1/2-3/4 throttle.
#5
Remove the float bowl, being careful not to strip the screws. You might be able to loosen the boots going to the carb and swivel it to access the screws.
You will see the main jet in the center of the carb bottom.
Go here to see a diagram of the carb parts so you know which one is the main:
Click
You will see the main jet in the center of the carb bottom.
Go here to see a diagram of the carb parts so you know which one is the main:
Click
#6
#7
Hey but i got a warrior 4 stroke. The carb is bigger and different?
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#8
Originally posted by: dude13
Hey but i got a warrior 4 stroke. The carb is bigger and different?
Hey but i got a warrior 4 stroke. The carb is bigger and different?
Did you go to the link I posted and select your model and look at the carb pic? It will give you an exploded view.
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