Question about 1981 Yamaha XJ 650

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1981 yamaha maxim 550 doesn't want to idle off choke,could it be throttle screw adjustment?

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  • william_h57 Jul 07, 2010

    so should i just turn the adjustment screw clockwise until the motor idles off choke?

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Yes

Posted on Jul 06, 2010

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2. Fuel filter clogged.
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My 1982 Yamaha 650 maxim begins to rev around 4,000 rpm after it warms up for under 5 minutes. I have tried carb cleaner. Can anyone help?


Hi, Anonymous and the usual suspects are:
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My 1981 maxim 650 idles high. what is the correct idle setting and how do i adjust


Hi, Robertshenk and the usual suspects are:
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5. Broken throttle return spring.
6. Damaged diaphragm or slide.
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1 Answer

I have a 1982 yamaha vision 550 i have it runnin but hard to find a smooth idle choke to high idle real fast choke to low it dies


Hi, Renee and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
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7. Idle adjusting screw set too low.
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Hi, Timothy and the usual suspects are:
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I have a 1982 yahmaha xz 550 and it wont idle and it spits and spudders


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6. Plugged low-speed jet.
7. Contaminated or plugged low-speed circuit.
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1 Answer

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Hi, Alexmacy and the usual suspects are:
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2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on the links below. Good luck and have a nice day.
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1 Answer

I have a 1981 yamaha 550 maxim i would like to now what the factory air adjustments are on the carbs


one and a half turns out from fully screwed in.

keep in mind the bikes age,you will rarely find that the factory specs will be spot on after a bike has some years under it.

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1 Answer

I wanted to know how to turn down the idle on my 1981 XJ 650 Maxim. Every time I come to a stop in first gear the engine races. At first I thought it was the choke. I don't know anything about motorcycle...


hello
if you were to look upward under the carbs, about center between the middle two carbs you should notice a screw with a larger head on it. this is the idle adjusting screw. hope this helps.

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