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2 stroke or 4? if 2 stroke definitely jetted wrong choking makes it rich tells me your main jet is too lean (smaller hole) you need to pull carb check jets for plugage clean jets write down numbers check dealer for correct jet size for your elevation if 4 stroke back fire thru carb indicates timing is off or bad intake valves or cam lobe worn
to get the old one out. use CLR(found in wal-mart and hardware stores.mix as instructed with warm water . put in carb submerge it
try keeping water luke warm for an hour.calcium deposit could be the problem
Ignore all these idiots. The engine does not need to be remove. He must own a dealership. Simply remove the large air tubes to the right carb and move the left up out of the way. The bracket is on the left side, then feed the cable to the right between the carbs, a bit tricky. You'll see the choke lever on the back right of the carbs. insert in the cable holder. You have to bend the cable up to slip into the holder, the back down to lock it in. Before all of this, attach to the hand lever first.
To change the choke cable, you must take the carb off the engine. Remove the air filter and backing plate. Take the nut off the backside of the choke cable and let the cable come out of the bracket that holds it. Make sure the petcock is turned off and disconnect the fuel hose at the carb. Loosen the throttle and idle cable at the handlebar throttle assembly. Pull the carb out of the intake manifold seal. Work the throttle and idle cables out of their positions in the carb. Bring the carb with the choke cable out and away from the engine. Take the choke cable out of the carb with a 14mm open end wrench. Take the plunger and spring off the old cable and swap it to the new cable and reinstall the choke cable. Put the throttle and idle cables back onto the carb, put a new intake manifold seal on the intake manifold and push the carburetor back into the new seal. Put the choke cable in it's bracket and secure the nut. Be careful and do not over tighten the nut as the plastic cable housing will break. Reconnect the fuel line, the vacuum line, and anything else that was taken off. Replace the air filter backing plate and the air cleaner. Readjust the throttle and idle cables making sure that the throttle operates freely and returns when let go on it's own. Never put any kind of lubricant on the choke cable. There is a knurled wheel that you can use to tighten the cable so that it stays where you put it.
In order to replace the choke cable, you must take the carburetor off. Start by taking the air filter assembly off the engine, including the backing plate. Then, disconnect the fuel line, drop the choke cable from it's bracket on the left side of the bike, and loosen and disconnect the throttle cables. There is a vacuum line that plugs onto either the back of the carburetor or the intake manifold. Once all this is loose, pull the carb out of the intake seal and guide the choke cable out of with the carb.
Now, that you have the carb out, using a 14mm wrench, unscrew the choke cable where it goes into the carb. You'll have to take the plunger and spring off the old cable and put it on the new cable. The screw it back into the carb.
Reconnect the throttle cables and vacuum lines and install the carb back into the intake using a new intake manifold seal. If you don't replace this seal, you may wind up with a vacuum leak and have running problems. Reinstall the fuel line and air cleaner assembly. Adjust the throttle cables and make sure the carb works correctly. Never lubricate the choke cable. If you do, it will not stay out when you pull it out. There is knurled tension wheel behind the knob when you pull the knob out. Tighten or loosen the tension on the cable with this. Do not over-tighten the big nut on the backside or the cable housing will break,, cheap plastic stuff.
To replace the "choke" on the carb of your 2000 Softail, you much take the carb off the engine. Take the air filter cover, air filter, and air filter backing plate off the engine. Loosen and disconnect the throttle cables and fuel hose. Loosen the nut on the backside of the "choke" knob and take it out of it's slot in the bracket. Twist and pull the carb out of the intake manifold bringing the "choke cable" with it. Once out, use a 14 mm open end wrench to unscrew the cable and plunger assembly. You'll have to swap the spring and plunger from your old cable to the new cable and reinstall in reverse order. Always install a new carb seal where the carb pushes back into the intake. Make sure the throttle works smoothly and snaps shut when you relaease the throttle grip. Never lubricate the "choke" cable. Be careful when tightening the nut on the backside of the cable knob end. The assembly is made of plastic and breaks easily. To adjust the tension on the cable. turn the knurled ring just behind the choke knob.
Here is how to do it. First disconnect the throttle cable to the carb and let it hang loose. Make sure the outdrive is in neutral and the boat is secured to the dock or on a trailer with a water ****.
Pull back on the throttle by hand directly on the carb throttle shaft. Observe the Choke cam on the opposite side of the Carb. Let go of the Carb throttle shaft and see where the Stepup Cam is set. The Choke plate should be closed most of the way. You will not have very much time to make an adjustment.
Start the engine and let the Choke work and observe the RPM. There are usually adjustments you can make to put the Stepup Cam on a lower step by bending the Link Rod if it is running too high in Choke. Sometimes the Cam is left alone and a screw similar to the Curb Idle screw on the Throttle side just needs reduction to ride lower on the Choke Cam.
After the Choke is warm, it disengages with a pull on the Throttle. Now you are using the Throttle side of the Carb to operate the engine RPM. You want a low RPM for sake of the outdrive gears and NO WAKE zone. The adjustment screw opens the Throttle shaft, You set it for the Manufacturers Spec. probably 550 RPM.
The Throttle cable is now adjusted so it pushes slightly against the Carb. This forces the throttle closed. The Throttle cable has threads and a sort of Knurled knob which runs on these threads. This device is used to lengthen or shorten the cable so that pressure is applied against the Throttle.
When the outdrive is in water you will has resistence on the Exhaust. This will slow the RPM. If the motor stalls you will need to adjust the motor to idle Specs while in the water.
For best economy, find a Vacuum port and attach a Vacuum guage to it and adjust the air mix to the highest Vacuum reading then turn in the Mixture screws slightly until the vacuum starts to drop.