i have a ton of carb kits, that just sit around on the shelves. After i get into them, 9 times out of 10 all the interior parts are fine with the exception of maybe the float bowl gasket. Dont be scared guys!
Power User
4 Wheels? Huh?
i have a ton of carb kits, that just sit around on the shelves. After i get into them, 9 times out of 10 all the interior parts are fine with the exception of maybe the float bowl gasket. Dont be scared guys!
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Roostin Away
The only issue i've had on rebuilding carbs was for my dirtbike, 1978 honda xl250s. The accelerater pump nearly fell apart, fortunatly, my dad had a spare with another carb he didn't need. The pumps arn't common in kits nor on trikes as far as im aware
Also, a tip for cleaning the seat; qtip and toothpaste, just like lapping a valve.
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Arm chair racerFirst time rider
I use this.
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Arm chair racerAt the back of the pack
i clean carbs all the time and extremely rarely use a rebuild kit. all it takes is some TLCOriginally Posted by aldochina
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Arm chair racerFirst time rider
video
Got The Holeshot
Arm chair racerJust too addicted
Thats a pretty good idea!! Gonna have to try it!!
1985 250r-LED Performance 4mm Stroker motor
1978 ATC70 w/ Piranha 140cc
1972 - K1 - CT70 w/lifan 125cc
2017 YZ 250x- Braap
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Just Too Addicted
Arm chair racerJust too addicted
The ethanol issue isn't well known to most consumers. Ethanol is compressed into the gasoline and starts to separate in some cases after a few weeks. The shelf life according to most sources suggest it is only 90 days. What happens at the separation point is you end up with alcohol that is eating up certain plastics, rubber, and fiberglass. Ethanol mix has been banned for use at some Marina's after to many boats with fiberglass tanks burned up. In New York we are forced to use ethanol in are vehicles despite the danger to older equipment such as Farm Tractors, Vehicles, Garden Equipment, and other gasoline driven machines. Our local Yamaha Dealer has a container on their counter where you can see the separation. Yamaha Dealers will no longer warranty ANY fuel problem issues due to ethanol. In NY our pumps had warning labels on them that read, "Contains up to 10% Ethanol", which has now been changed to, "Contains 10% Ethanol". They are also pushing for 15% in NY now! Non-ethanol fuel is difficult to find and many Fuel Stations aware of the problems now carry special Fuel Treatment at approx. 10.00 per bottle. Problem is the treatment doesn't stop the separation! Okay, so what is the solution? As mentioned above be sure to use fresh fuel and on top of that I suggest if you live a mandated state for the ethanol mix make sure you purchase your fuel from a Station that has a good turn over with a lot of business so you avoid buying fuel that may have started the separation phase. Hope this helps!
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Arm chair racerAt the back of the pack
what is that machine called?
New to the board
Arm chair racerNew to the board
It’s an ultrasonic cleaner. You can pick one up at Harbor Freight for about $30, granted it is not as nearly nice looking as the one above.
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Arm chair racerAt the back of the pack
Excellent read and very true on not normally ever needing a new carb.
One thing to keep in mind about idle screws and stuff. If a screw is to be turned in and then backed out, it will have a spring. It will also have a washer and a rubber o-ring. So if you got confused and ended up with a left over o-ring or washer, look at the jets/screws that have a spring on them. They will usually be setup like this, screw/jet then spring then washer then o-ring if the o-ring doesn't have a groove to live in. If it has a groove to live in, then there might not be a washer.
Power User
Roostin Away
i just recently started sand blasting my carbs with ultra fine glass beads,i usually let the carb soak for about 24 hours in carb cleaner before i blast them.looks and works like a new one when i finish.
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First Time Rider
Arm chair racerNew to the board
carbs are easy. Mikunis are a great carb, easy to clean. Stabil is making ethanol treatment now and I heard about a new product called Startron that is supposed to prevent Phase Separation in ethanol gas. in just 60 days, ethanol will separate and if its in a 2 stroke, hello burndown and or hole in a piston. been thru it with my sled. after running it for a few minutes with stabil, all gas is now siphoned out after sled season and dumped in my car.
First Time Rider
Arm chair racerNew to the board
Hoppes #9 gun cleaner will make jets look like new after soaking for a while. You have to rinse them with MEK or other suitable solvent before installing because the hoppes will solidify if you let it sit a long time.I use the stuff to clean aircraft piston engine injector nozzles all the time,works great
First Time Rider
Arm chair racerNew to the board
BTW, Ethanol is a solvent.
First Time Rider
Arm chair racerNew to the board
Arent you kinda splitting hairs Tuff?My point is you need to get the residue out of the jets with a solvent that isnt suspended in another solution,but you probrably could soak them in gas, its just not the procedure where I work
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