Question about 1982 Yamaha XJ 650

1 Answer

I have a problem with the idle speed when my 1982 XJ650 heats up. When I engage the clutch, the RPMs shoot up to about 3000-3500 and even higher. When the bike is cold, the idle is perfect. Once I ride it about 20 minutes or so, the problem starts.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points

    MVP:

    An expert that gotĀ 5 achievements.

    Governor:

    An expert whose answer gotĀ voted for 20 times.

    Hot-Shot:

    An expert who has answered 20 questions.

  • Expert
  • 60 Answers

Hi,

Hope this doesn't reach you too late. These bikes take some time to fully warm up.

You can adjust the idle down by turning the knob between the #2 and #3 carburetors counterclockwise until you reach 1050rpm. Wear a glove or you will burn your hand!

Ride the bike some more, and see if the idle stabilizes. If not, you may have a vacuum leak somewhere.

A quick way to diagnose this is to take a propane torch (NOT LIT!) and run it around the carb boots and vacuum caps. If there is a change in rpm, then inspect the boots and caps for tightness and cracks.

Posted on Mar 09, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I have an old 2.5HP briggs with a hilliard extreme duty centrifugal clutch on my vintage rupp racing kart and it doesn't seem to gety up enough rpms to engage the clutch. So question is should I remove...


Did it ever work with that clutch? I'm assuming that the clutch has been changed and now it isn't working. That clutch should engage at 2300 rpms but your governor might not be allowing it to rev up to it's full speed. If you remove or change the governor, that's about the only way you'll get the rpms necessary for a solid clutch engagement. Changing the sprocket without maintaining a high enough engine speed for complete engagement of the clutch first will only create clutch slippage and eventually failure. So, to answer your question, get the engine speed higher and then work on the right sprocket ratio.
Good luck!
Ed

Jan 05, 2014 | Measuring Tools & Sensors

1 Answer

Hello,i cannot engage 2nd gear and upwards on 1982 xj650 rj model yamaha motor bike .


need to look at internal gear selector, may be bent, or springs damaged

Feb 17, 2013 | 1981 Yamaha XJ 650

1 Answer

1982 Yamaha XJ650J clutch adjustment


Hi, Andrew 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.
adjusting clutch on an xj650
Motorcycle Clutch Changing Friction Plates on 82 Yamaha Maxim XJ 650
Yamaha XJ750 Owner Manual
OEM parts for Yamaha
http://mybikemanuals.com/yamaha/yamaha-xj-owners-manuals

Sep 08, 2012 | 1982 Yamaha XJ 650

1 Answer

1982 maxim 650 idles rough


Hi, Anonymous and the usual suspects are:
1. Idle speed improperly adjusted.
2. Air fuel mixture screws not properly adjusted.
3. Inlet system air leak.
4. Leaking accelerator pump.
5. Loose low-speed jet.
6. Plugged low-speed jet.
7. Contaminated or plugged low-speed circuit.
8. Enrichner valve/choke not seated or leaking.
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.
Yamaha XJ650 Idle Problem
1994 xj600 seca 2 rough idle
Yamaha XJ750 Owners Workshop Manual
OEM parts for Yamaha
http://www.carlsalter.com/pdfs/Yamaha_XJ600SK_Owners_Manual.pdf

Aug 27, 2012 | 1982 Yamaha XJ 650

1 Answer

I have a 1982 yahmaha xz 550 and it wont idle and it spits and spudders


Hi, Ld and the usual suspects are:
1. Idle speed improperly adjusted.
2. Air fuel mixture screws not properly adjusted.
3. Inlet system air leak.
4. Leaking accelerator pump.
5. Loose low-speed jet.
6. Plugged low-speed jet.
7. Contaminated or plugged low-speed circuit.
8. Enrichner valve/choke not seated or leaking.
9. Multi carburetors out of sync and need to be balanced.
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.
1982 Maxim xj650 idle issues
82 XT550 misfires over half throttle YDIS carb
Yamaha XZ550 XZ 550 1982 1985 Workshop Repair Service Manual Download... $10
OEM parts for Yamaha
http://mybikemanuals.com/yamaha

Nov 14, 2011 | 1983 Yamaha XZ 550

1 Answer

I have a yamaha xj650 maxim which was a project of mine and it will not idle below 2500 rpms. There have been many add ons though 4 to 1 exhaust free flow air filters clean carbs added stage 3 dyno jet kit...


I would recommend adjusting the idle screw on the carb. If it is not the idle adjustment, then check the choke as it may be sticking and that will cause the engine to idle at that rate.

Feb 28, 2011 | 1982 Yamaha XJ 650

1 Answer

1982 yamaha xj650 starting


Check the electrical switch in the clutch lever, most bikes have one as a safety, so you cant start it in gear, unless the clutch is in, could be a faulty switch, also do you have a switch on your side stand, sometimes these can be faulty as well.

Apr 17, 2010 | 1982 Yamaha XJ 650

3 Answers

No clutch


Yes this is evident in replacing engine oil to motorcycle engine.

Engine oil designed for automobiles isnt good for motorbikes as they offer additives for added "slipping". THis will cause your clutch to slip. Automobile Engine's oil system is separate from the clutch while motorcycle's clutch and engine fall under one oil system.

Use engine oil designed for motorcycles.
Solution: Buy and Engine flush, pour it to your crankshaft, run the engine for 5 minutes (idle) then drain. Replace with new motorcycle oil.
-levibit-

Jun 21, 2009 | 1982 Yamaha XJ 650

1 Answer

I have a suzuki rm 125 1994 model when i pull the clutch lever in to put it in gear the clutch doesnt work t jst crunches into gear


Adjust the clutch cable to allow about 1/4" free play at the end of the clutch handle. Don't put the bike in gear until the rpms are near idle speed. The clutch is working fine if the bike does not lurch forward when going into gear at idle speed. Dirty, gritty oil in the gearbox can make the clutch grab. Consider changing oil if grabbing is the problem. The "crunch" you hear is the slider gear engaging into the driven gear. The higher the engine speed when being put into gear the louder the crunch. The slider gear engaging "dogs" can break. Crunching into gear is hard on the gears.

Post a comment to let me know how you come out on this.

Jun 04, 2009 | 2003 Suzuki RM 125

Not finding what you are looking for?
1982 Yamaha XJ 650 Logo

420 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts

dhnguyen

Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers

Tony

Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...