In the first picture above you see a crush washer float seat and float needle. Making up the Float needle assembly. This when working properly has two main functions with the help of the float itself. (the float being the number 16031 in the center of the last picture.
These two functions are however to
a. Stop fuel from entering the Carb when it is no longer needed
b. keep the fuel in the float bowl at a constant level to keep a constant fuel mixture with the help
of the jets.
Float needles can really send the newby motorcycle mechanic for loop as they can do some pretty quirky things. The problems you can have with a Float needle assembly Can be grouped into 3 groups
1.Sticking
2. Wont seal
3 Seals when it wants
Sticking is probably by far the most obvious visually when you take a carb appart. basicly if the float is hanging and the needle wont pop out of the seat its stuck in there...
If its one thing if learned JUST REPLACE IT! because i hate doing things twice.
However you can use some carb clean and a que tip and cleaaan clean clean! untill you see brass you can put the que tip in drill and spin it inside the seat to get a really good clean.
Wont Seal. wont seal is not good and frustrating and not always easy to diagnose but its not one of the worst problems your bike can have. There are a few ways to know this is occurring. The main thing is a strong smell of fuel. The bike may not turn over or it may turn and sputter a little bit with quite of bit of black smoke coming out of the exhaust. Sometimes you can get the bike to fire up if you leave the fuel petcock off and crank crank crank. Once fired turn on the petcock and wait for the bike to die if it doesn't turn it off anyway wait 5 minutes and try to start it... i bet as long as u left the petcock on the bike is flooded out again and sputtering and trying to start at best. Another way to find this problem is by noticing gas in your oil! as it leaks thought the Carburetor through the cylinder past the piston. and into your oil!
REPLACE THEM!
Seals Sometimes :/ This will have you yanking your hair out sometimes the bike will run fine other times it will feel like the choke is on and the bike will smoke and run poorly. They can also seal sometimes while sitting creating hard starts with a puff of black smoke as the bike comes too. Now some older inline fours with center stands DO NOT LIKE to be on the kickstand if you have one and you are getting a leak in any way try the center stand for storage. check the plugs for black soot and the gas for oil. when in dought.
REPLACE THEM it cant hurt.
Rusty tanks can cause a lot of seals sometimes instances as rust particles between the needle and seat.
If you are short on cash try clean clean cleaning them with carb clean spray and a que tip use the que tip in a drill on the seat to polish it clean. Run an inline filter to cut down on rust particles.
Are you mid carburetor clean and are curious if your needle and seats are worn out? Even though you haven't had any running problems.?
The main part that wears out is the needle in the last picture the rubber cone is what you need to look at. if it has any even slight indentations I recommend that you go ahead and replace it as it is close to needing replacement. The seat however is a little different basically it just needs to be clean especially where the cone meets it if you cant get it to a decent brass polished clean it should be replaced. One more place to look is in at the little pin in the second picture it is spring loaded and absorbs the vibrations of the motor. if it wont spring back or even depress you are in need of a new needle.
New float needles can be purchased at a variety of places.
Online
www.mrcycles.com
www.bikebandit.com
OR
At your local dealer!
FIND ONE ON GOOGLE MAPS!
I hope this little article on on Carburetor Float Needles was helpful I will be glad to answer any questions left in the comment section please +1 me if you found it helpful as well
These two functions are however to
a. Stop fuel from entering the Carb when it is no longer needed
b. keep the fuel in the float bowl at a constant level to keep a constant fuel mixture with the help
of the jets.
Float needles can really send the newby motorcycle mechanic for loop as they can do some pretty quirky things. The problems you can have with a Float needle assembly Can be grouped into 3 groups
1.Sticking
2. Wont seal
3 Seals when it wants
Sticking is probably by far the most obvious visually when you take a carb appart. basicly if the float is hanging and the needle wont pop out of the seat its stuck in there...
If its one thing if learned JUST REPLACE IT! because i hate doing things twice.
However you can use some carb clean and a que tip and cleaaan clean clean! untill you see brass you can put the que tip in drill and spin it inside the seat to get a really good clean.
Wont Seal. wont seal is not good and frustrating and not always easy to diagnose but its not one of the worst problems your bike can have. There are a few ways to know this is occurring. The main thing is a strong smell of fuel. The bike may not turn over or it may turn and sputter a little bit with quite of bit of black smoke coming out of the exhaust. Sometimes you can get the bike to fire up if you leave the fuel petcock off and crank crank crank. Once fired turn on the petcock and wait for the bike to die if it doesn't turn it off anyway wait 5 minutes and try to start it... i bet as long as u left the petcock on the bike is flooded out again and sputtering and trying to start at best. Another way to find this problem is by noticing gas in your oil! as it leaks thought the Carburetor through the cylinder past the piston. and into your oil!
REPLACE THEM!
Seals Sometimes :/ This will have you yanking your hair out sometimes the bike will run fine other times it will feel like the choke is on and the bike will smoke and run poorly. They can also seal sometimes while sitting creating hard starts with a puff of black smoke as the bike comes too. Now some older inline fours with center stands DO NOT LIKE to be on the kickstand if you have one and you are getting a leak in any way try the center stand for storage. check the plugs for black soot and the gas for oil. when in dought.
REPLACE THEM it cant hurt.
Rusty tanks can cause a lot of seals sometimes instances as rust particles between the needle and seat.
If you are short on cash try clean clean cleaning them with carb clean spray and a que tip use the que tip in a drill on the seat to polish it clean. Run an inline filter to cut down on rust particles.
Are you mid carburetor clean and are curious if your needle and seats are worn out? Even though you haven't had any running problems.?
The main part that wears out is the needle in the last picture the rubber cone is what you need to look at. if it has any even slight indentations I recommend that you go ahead and replace it as it is close to needing replacement. The seat however is a little different basically it just needs to be clean especially where the cone meets it if you cant get it to a decent brass polished clean it should be replaced. One more place to look is in at the little pin in the second picture it is spring loaded and absorbs the vibrations of the motor. if it wont spring back or even depress you are in need of a new needle.
New float needles can be purchased at a variety of places.
Online
www.mrcycles.com
www.bikebandit.com
OR
At your local dealer!
FIND ONE ON GOOGLE MAPS!
I hope this little article on on Carburetor Float Needles was helpful I will be glad to answer any questions left in the comment section please +1 me if you found it helpful as well
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