Question about 2001 Harley Davidson FXST Softail Standard

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What carburetor does my bike have? - 2001 Harley Davidson FXST Softail Standard

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If your bike came equipped with a carb and no one has changed it, your bike is equipped with a Keihen CV 40mm carb.

Good luck

Posted on Aug 28, 2010

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Factory Jet Sizes

Front cylinder carburetor:

112.5 Main Jet

17.5 Pilot Jet

(1) 0.020" thick shim washer under the needle

PMS setting apparently varies from bike to bike... but it should be 2.5 turns

Rear cylinder carburetor:

110 Main Jet

17.5 Pilot Jet

(1) 0.020" thick shim washer under the needle

PMS setting apparently varies from bike to bike... but it should be 2.5 turns

May 23, 2013 | 2000 Yamaha V Star 1100 Classic

1 Answer

Overflowing of carburetor

    • 1 Put your bike on the center kick stand either outdoors or in a well-ventilated garage with the door open. You'll need to run the engine, so don't make the mistake of doing that in a closed garage.
    • 2 Set up a powerful fan next to the bike to help keep the engine cool. The cooling fins on your bike's engine rely on the apparent wind created when the bike is in motion to keep the block from overheating. Since you'll be standing still, you will need to keep plenty of airflow on the engine.
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    • 3 Remove any body work or other obstructions so you have clean access to the back of the carburetors.
    • 4 Find the ports for each carburetor on the intake track. The port is a metal tube extending upward from the intake covered either by a rubber nipple or a screw. Each carburetor has its own port. Remove the plug (be it metal screw or rubber nipple).
    • 5 Attach the manometer lines to each of the carburetor ports. With the manometer face up, attach the leftmost line to the port on the leftmost carburetor and work from left to right. Keep the lines free of any kinks or obstructions that could interrupt the flow.
    • 6 Start the bike using as little throttle as possible, and let it idle until the engine is warm. Don't forget to turn on the fan to keep the engine from getting too warm.
    • 7 Locate the vacuum adjustment screws along the top of the row of carburetors on the shared throttle arm. If you need help figuring out what the arm looks like, twist the throttle hand grip slightly and you will see the arm move back and forth. A standard, four-cylinder bike will have three adjustment screws along the throttle arm.
    • 8 Read the manometer for carburetors one and two (beginning from the left). Turn the leftmost adjustment screw to bring the vacuum readings for those two carburetors equal to each other. Turn the screw clockwise slightly and back again to get a sense of the effect on your readings. Do the same for carbs three and four using the rightmost adjustment screw. When your settings are balanced for each pair, use the adjustment screw in the center to bring the two pairs into balance with each other.
    • 9 Adjust the idle (fuel mixture) screw to set the appropriate idle speed. You can call your local shop to ask about the proper setting or check the service manual for your bike if you have it. Make sure you are using the warm idle recommendation as, at this point, your bike is at full running temperature.
    • 10 Tweak your vacuum settings if the idle adjustment threw them off slightly. Keep working back and forth from the carburetor adjustment screws to the idle adjustment screws until you have an equal vacuum for the four carbs and your idle is smooth and running at the proper speed.
    • 11 Turn off the engine and remove the manometer lines. Do not forget to replace the vacuum plugs in the carburetor ports to seal the air intake and preserve the balance of your newly tuned carburetors.

Jan 14, 2013 | Motorcycles

1 Answer

Karizma r carburetor problem

i have a karizma r bike the carburetor which the water is mixing with petrol while in the rainy season why other bikes dont have this type of problems how to resolve this reply

Jul 30, 2012 | 2010 Hero Honda Karizma

1 Answer

Hi I have a 110 pit bike it starts first kick but fuel dribbles out from the over flow pipe at the bottom of the engine also plug gets black after every ride any ideas

Hi tim laura...
You have some trash/debris in your carburetor inlet valve.
It is not allowing the needle to make a complete seal and this is allowing the carburetor to over fill and flow out of the over flow pipe.
Clean your carburetor and check your tank for debris/trash also to stop this from happening again.
You may even put a filter in the line from the fuel tank on the bike to the carburetor.
Once you have your carburetor cleaned that should solve your overflow problem.
Please take time to rate me

Aug 23, 2011 | Pit SSR 110CC Pro Beginner Bike

2 Answers

My 2006 vthunder classic will not start.i cannot get it to fire.just spins over but not starting. is there a fuse box on this bike?

Possibly the gas has flooded out the carburetor. Happened to me.

I don't know if it's the vacuum fuel pump leaking gas or the carburetor valves sticking slightly open. My solution was to have an on-off petcock installed upstream of the carburetor, just in front of the right side chrome side plate. I turn off the gas whenever I park the bike. So far that has worked, although I have other (unrelated) problems with this bike. The mechanic had to dry out the carb and check the crankcase oil in case gas had leaked into it.

This bike has a petcock system that is always on. It has normal and reserve positions (down and up) which let gas flow to upstream of the fuel pump and then a center prime position which feeds directly to the carburetor, in case vacuum from the starter cranking doesn't drive enough gas through the fuel pump, after the carburetor has dried out from sitting idle.

Jun 24, 2011 | 2006 Vento V Thunder XL

1 Answer

Hyper charger...

The design of the bike is what makes this difficult. Your airbox is located under your seat and feeds the carburetors via the backbone of the bike. The air passage is basically in the middle of the fuel tank and connected to the carburetors in the center of the V of the engine, which are a downdraft design. Unless you can create a new intake tract from the side of the bike to the carburetors, you cannot mount a hypercharger on this model.
All of the models I am familiar with mounting a hypercharger on already have their airbox located on the side of the motor, so it is not a big deal to change.

Jul 07, 2010 | 1993 Honda VT 1100 C Shadow

1 Answer

1978 XS750 won't rev up

first could be blocked fuel strainer in gas tank, older bikes sometimes build up sediment in gas tank. remove fuel shutoff valve and clean. second install inline fuel filter, you can pick one up at local motorcycle store or third. remove carburetor and disasemble and clean, older bikes sometimes accumulate sediemnt, dirt in carburetor. if your not familiar with carburetor disassembly maybe better to take to dealer for service.

Jun 13, 2010 | 1978 Yamaha TX 750

1 Answer

Chinese import 50cc pit bike carburetor problem

sounds like your needle valve is sticking need to take carb apat and clean the needle and seat

Mar 18, 2010 | TVS Star Motorcycles

2 Answers

My carburetor was leaking fuel, so I went to remove it to repair the o-ring. When I was removing the air filter assembly, I noticed the filter assembly had a sludge building up in it that looked like a mix...

The bike has a tube coming of the air box that you drain as neded. Additionally you have a 9 year bike and these items build up with miles, and yes age. So be sure to inspect and replace these items per the owners manual. No big deal just part of owning a bike.

Dec 18, 2009 | 2000 Honda VT 600 C Shadow

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