Question about 1981 Yamaha XS 400 Special

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Why is gas coming out of my carb on my 1981 xs400 yamaha

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Your carb floats are sticking&needle valve,causing fuel to run out the overflow line on carb,the carbs need to be taken apart & cleaned

Posted on May 13, 2014

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Posted on Jan 02, 2017

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2 Answers

Missing ignition start switch for 1981 yamaha xj650 maxim, what's the amp required to start it? Having trouble finding the right momentary switch to install


Starting doesn't go through the ignition switch it goes through the starter solenoid and the ignition switch controls that solenoid only about 5 amps.

Apr 04, 2017 | 1981 Yamaha XJ 650

1 Answer

What kind of gas should I use for my 1981 yamaha 400 special.


Hi, John for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. 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.
What Gasoline should use
https://yamahaclub.com/forums/topic/8435-xs400-what-octane-level-should-i-use
YAMAHA XS 400 1977 1982 service manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xs-owners-manuals

Jul 24, 2013 | 1981 Yamaha XS 400 Special

1 Answer

1981 Yamaha xs400 timing specs


Hi, Kbrushett for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
Ignition timing on 1981 special
How to set the timing on Yamaha XS400 motorcycle
Yamaha XS360 Service Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xs-owners-manuals

Jul 16, 2011 | 1981 Yamaha XS 400

1 Answer

What kind of oil should i be using for a 1981 yamaha xs400?


There's such thing as motorcycle oil. Its formulated for motorcycle engines. I'd go in to an auto parts store and ask exactly which weight oil to use for your engine.

Jul 09, 2011 | 1981 Yamaha XS 400 Special

1 Answer

1982- XS400 Runs poor (misses) at high revs in lower gears


the intake manifolds beteen the carbs an the motor crack they are fiber material ,,when they crack the motor will miss Its sucking air past the carbs replace or epoxy likr I did ,,seal air off no more miss

Oct 05, 2010 | 1981 Yamaha XS 400 Special

1 Answer

I need a carburetor for a 1981 xs400 special. Does anybody know where I can get one without costing me an arm and a leg.


In consideration of the arm and leg issue, Google " motorcycle salvage yamaha " and see what you can find. You may also consider gettin the parts needed to fix the carb. Many, but not all, parts are available at the website below. Please rate my answer. Thanks.
www.babbittsonline.com/pages/parts/viewbybrand/default.aspx

Aug 15, 2010 | Yamaha XS 400 Motorcycles

1 Answer

Looking for a free downloadabe 1979-1981 Yamaha XS400H SH Factory Service Manual


This is a Haynes, not factory, but it's good:
http://www.yamahaclub.com/forums/topic/16081-xs400-links/
Look in the second post. The folks there are helpful, too, if you've got specific questions on what you're doing/need to do.

Jun 09, 2010 | 1981 Yamaha XS 400 Special

1 Answer

I have a 1981 xs400 and the wiring harness got burnt up be the previous owner. is there any other years that will match up with this bike?


The XS400 H (Special 2), SH & SJ (Heritage) US models share the same harness
Ride safe
Bike-Doc
Please mark this as very helpful (if it has been!!)

Apr 28, 2010 | 1981 Yamaha XS 400

1 Answer

1981 Yamaha XS 400 wiring diagram


Hi, Mr_iceman_de for this scenario you will need your service/owners manual if you can't find the best tool you ever bought for your Yamaha, despair not, for a mere $10 you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
1981 Yamaha XS400 wiring diagram Google Search
Yamaha Motorcycle Wiring Diagrams
Yamaha XS400 1977 1982 Factory Service Repair Manual PDF Download Manuals... $10
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xs-owners-manuals

Apr 02, 2009 | 1981 Yamaha XS 400 Special

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