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I just purchased the ATV and it run really rough with the breather filter on and lid on the breather box. Once I take the lid off and remove the filter it runs better but it backfires through the carb.
What could I do to fix this.
The carb is fairly new.
And I put high grade non ethanol gas in it hoping it would help some.
I recently got a great deal on a 2001 Big Bear 400 4x4.it sat in a barn for 2 years while the guy was in college,so it need carb work...got it to use around the property,not racing or anything crazy with it
It runs GREAT and strong..no smoke or funny noises,just seems to have an issue at times ,when you hit the throttle it want's to die ,most of the time it runs strong.
So am debating a rebuild kit or new oem carb...i got to looking around really good yesterday and found this broke off..( the bent tube where the pencil is pointing).... is this a part that comes with a new carb?..if not,,where can i get the part?
I found a diagram online but it does not show the bent tube with a nut on it but says it a "Starter set" in the diagram(Number 21 in the diagram)
I checked the petcock and it is getting plenty of fuel flow..but it has the common drip leak..so i am ordering a new one,..was going to get the seal kit but for the price it is about the same price as a whole new petcock
Just trying to figure out where i can get this part for repair
Hey guys! Stoked to be here because ive found its pretty hard to get help for mini quads
I recently bought a mini quad (it's a piece of poop so i have no clue the make) and it ran perfectly fine. I was running it a few weeks ago all day and it worked fine and the next day when i went to start it, the kickstart bar was super hard to push down but i could still do it, then it would skip and finish off hard to push down.
I have fairly intermediate mechanic abilities so i was able to pull off the cover and start playing around. it seems the kickstart spring is fine but i noticed a bunch of metal shavings. long story short i posted pictures and took a video of how things are kind of running. i assume the gears started grinding and now they wont catch fully, hence the skipping?
Also, im aware the main gear on the left has broken teeth, i found out the hard way when i tried to take off the nut and the teeth broke.
IMG_7447.MOV IMG_7445.HEIC IMG_7446.HEIC
I'm fitting a new carb on my King Quad LTF300. From China. Only one I could find in UK. I think it should have 2 vacuum ports.
The vacuum port for the petcock is silver coloured. I can feel the pulsing vacuum. Putting the tube to the petcock there operates the petcock100% perfectly.
I can't identify the vacuum port for the fuel pump. The new carb is identical to the old EXCEPT that in what I think is the 2nd old fuel vacuum position is a brass upright port with a very small hole. When running, there is no vacuum I can feel and putting the fuel pump vacuum line there does not give a decent fuel flow - only a small trickle.
Is this the fuel pump vacuum port - see photo?
The carb came with a silver coloured screw-ended 1.5 inch long loose port in the box. See photo. Is it intended that you unscrew the brass port somehow and put in the silver one?
I'd really appreciate your help At the moment I can only do 10mph in a stuttering fashion on the level!
and put in the silver one?
Very tired of the Chinese carburetors. I don't have an original.
Which of these would be best, and how to make the cable connections?
Also, any idea on what size the muffler clamp is?
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