can you tell me how to do the plug check i forgot how to do it ?



and what do you think should i drop the needle one clip to #3 in the middel and do the air screw for 1.5 turns out

 

Ok, I tried the lazy mans way by looking in my tech folder, but couldn't find the info I wanted to give you.

Here's the skinny;

FIRST OFF MAKE SURE THE FILTER IS CLEAN AND YOU HAVE FRESH (PROPERLY GAPPED) PLUGS ON HAND!!! Do NOT assume they are already properly gapped!

Find a wide open area where you can go full throttle for at least 10-15 seconds.

Adjust the pilot circuit first using the air screw and pilot jet as described above. You want a crisp throttle response with no bogging.
You can drop the pilot jet size till you get a "hang idle" (this is where the motor does not come down from a high RPM very quickly). It means you are LEAN.

You can adjust from there by either turning IN the air screw till the idle settles down, or if you have to turn in the air screw too far (less than one turn out) then move up to the next size pilot jet. You want a crisp throttle response without the hang idle.

You can do the above while in neutral, and letting the bike idle.

Next you want to take the quad out and get it up to operating temp.

When warm, shut off the quad, pull the plugs and install FRESH WHITE PROPERLY GAPPED ONES.

Now, we are going to check the midrange also known as needle position.
Take the quad out and hold it at half throttle for at LEAST 10-15 seconds.

While still at 1/2 throttle, pull in the clutch and kill the motor at the same time. Leave your thumb on the throttle holding the same position till you roll to a stop.

Pull the plugs and look at the color of the INSULATOR (the formerly white ceramic portion).
Look down into the insulator between the ceramic core and metal outer body.

You want to see a light tan to paper bag brown color on the insulator.

If the insulator is LIGHTER than this, you are too lean.
Go DOWN one position on the CLIP. This will effectively RICHEN the mixture of the midrange.

If the insulator is DARKER than this, you are too rich.
Go UP a position on the CLIP. This will effectively DROP the needle and LEAN out the midrange.

Once you have the midrange set, you will go for the FULL THROTTLE run. This will determine the MAIN JET size.
Once again, following the procedure as above, get the motor warm and do a FULL THROTTLE run.

Hold the throttle WIDE OPEN for 10-15 seconds.

Pull in the clutch and kill the motor at the SAME TIME. Keep the throttle pinned till you roll to a stop.

Pull the plugs and look at their color.

Use the same colors to guide you for main jet selection.

Dark brown to black = too rich. Go down a size on the main and continue to do the checks like this till it is the correct color (light tan, or paper bag brown).

White to very light tan = too lean. Go up a main jet size and do another plug check. Continue to go up in main jet sizes till you get the proper plug insulator color.

Now you are jetted correctly.

Man! My hands are too sore from typing now! LOL!

 

thank you very much for the info and tips but in which gears should i do the test for the midrange and full throutel

 

4th, 5th or sixth.
Preferably 5th or sixth.

 

this gears for the full throutel but for the 1/2 throutel i use the same gears or what ?


i changed the stock pilot jet from 25 to 27.5 so i use the same set up for it .

how to make sure that both the carbs have the same air screw turns because i have one of them close more than the athour and is deficalt to make it right .


thar is 2 big screws on top of the carbs when you left the seat you well see them and you can turn them with your hand its near the cabels can you tell me what theas for and do i have to turn them

 

Use the same gears for full throttle and half throttle.

Both carbs should be pretty close to the same as far as air screw setting goes.

Unless I'm mistaken, you shouldn't have to mess with the screws on top of the carbs (someone else could probably verify this), just the pilot jets, air screws, needle position, and main jets should be of concern for your case.

 

im only asking theas screws for what i dont want to mess any thing

 

The air screws to the carbs.
They should be on the side of the carbs.

Do you have a manual?
If not you really do need to get one. They are invaluable.

 

Go here for a pic of the air screw.
It's at the end of the pencil.

http://www.thebansheezone.com/Bansheezone/AirScrews.htm

 

i know where the air screw are but im asking for the two big screws on top of the carbs its near the throutel cabels and thear colord is chrome