Question about 1982 Yamaha XJ 650

1 Answer

The engine seems to be missing on acceleration.the low idle jets have been cleaned which did help with idle

Posted by on


1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.

    Vice President:

    An expert whose answer got voted for 100 times.


    An expert who has answered 200 questions.

  • Expert
  • 221 Answers

Check float level how are the other jets?

Posted on Jul 19, 2009


1 Suggested Answer

  • 2 Answers

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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

2 Answers

Engine on full revs will not idle i have clean carb and jets

Hi, Kirby and the usual suspects are:
1. Idle speed improperly adjusted.
2. Inlet system air leak.
3. Leaking accelerator pump.
4. Loose low-speed jet.
5. Plugged low-speed jet.
6. Contaminated or plugged low-speed circuit.
7. 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 websites below. Good luck and have a nice day.
My bike wont idle but will run if you hold the revs up
Motorcycle Message Board Motorcycle USA
motorcycle not idling right

May 17, 2016 | Motorcycles

1 Answer

How to adj the crab on a poulan chainsaw

if the engine is in good shape..screw in both carb jets adjusting screws till they seat lightly, then back them out 1 1/2 turns, srew in the throttle adj screw a turn and start the motor,,warning if the chain is on make sure the blade isnt likely to touch anything when the engine starts as you will have to have the brake off to get started and adjusted. With the engine running, adjust the throttle srew until it is idling just above shutting off speed, then adjust the "L" low speed jet to get the best idling speed without srewing it in much, reset the throttle srew, then , while trying to accelerate suddenly each time, open the Low jet a little at a time until the machine accelerates smoothly without hesitation. Reset the throttle srew to a position that the chain stops running at idle and check again that the acceleration is without hesitation ( usually with "L" jet about 1/4 turn out more than best idling). The high "H" jet can now be set to give the best power while cutting a block of wood.

Jun 29, 2014 | Poulan Garden

1 Answer

163FML (CG200) bogging at low rev

Hi, Marcus 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.
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 blue links below. Good luck and have a wonderful day.
Bogs when open the throttle fast
Motorcycle Message Board Motorcycle USA
boging and half throttle
boggs down when accelerate aggressivly to full throttle Pit Bike Club
Why is the engine bogging under acceleration Suzuki FA50 Moped
Bike dies when you give it throttle

Mar 17, 2017 | Motorcycles

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

Aug 27, 2012 | 1982 Yamaha XJ 650

1 Answer

I have a kohler 12.5 in my J.D. STX38. Starts and runs good but has a slight miss on low idle. It may have it at high idle but you cannot notice it. The carb has been taken apart,cleaned, carb kit...

hi there harryandmeli
sounds like you still have a restriction in your carb or the float level is not right
check all the opening s and jets carefully, particularly main jet and emulsion tube air bleeds
and the idle air bleed , and idle jet, is the tank clean and no water ? , is the tank breather working ?, make sure gaskets at carb flange are ok - no leaking of air , make sure air filter is not blocked ?

provided compression and spark ok,( spark should jump a 6 mm gap minimum ) to pass a coil test and fuel flow from tank to carb is good , these engines have hydraulic valve lifters and like 10w/30 kohler oil , everything being = engine should run good

remember F A C T S

F = Fuel , A = Air , C = Compression , T = Timming , S = Spark

take a look

cheers hope it helps


Sep 16, 2011 | Garden

2 Answers

My Homelite ZR10926 16-Inch 33cc Ranger it is starting, idling, it dies when I accelerate it. I assume is the carburetor, maybe ? thank you.

It probably is not getting enough fuel. Check the filter in the tank. If it has been sitting with stale gass this filter plugs up.
Try running the engine with some choke. If this helps, try adjusting the carburetor high speed screw.

Jun 04, 2011 | Homelite ZR10926 16 Chain Saw

1 Answer

I have a 38cc champion chainsaw. The hi, lo and idle settings are all wronge so i cant get working correctly. Could you please tell me how to get the wright settings for it? cheers Nick

Hi Nick and welcome to FixYa. I am Kelly

If your starting from scratch do this:
1. First off completely remove the jets one at a time and inspect for a point on the end of the jet. If one of the points is missing it is stuck in the body of the carb and will have to be removed. (I have had to replace carbs because of this due to the fact the piont proke off in the body and could not get the broken piece out of the carb body)
2. Re install each jet and screw it in until it reaches the closed position until they just stop moving DO NOT over tighten.
3. Open each jet 1.5 turns from closed
4. Start the chain saw and accelerate to max speed
5. Adjust the high jet so that under no load it no longer sputters / misses
6. Let unit return to idle
7. As soon as it reaches idle accerate to full throttle again
a. Repeat the return to idle and accelerate process and adjust the low jet setting so that the chainsaw does not hesitate when you rapidly accelerate the engine.
8. Adjust the idle speed so that the chain saw idles but does not rotate the chain.

That is pretty much 2 jet / 2 cycle carb adjustment 101.

Make sure you have the air filter installed when making final adjustments as air filters can cause it to perform differently when installed vs removed especially if the filter is not clean.

Make MINOR 1/8 th turn or less adjustments as your going through the adjustment process!

Thanks for choosing FixYa.


Oct 04, 2010 | Garden

1 Answer

Yamaha 2001 ttr 250. Bogs above half speed, under load

I have the same problems with my 1999 TTR 250, were you able to find out anything?


May 04, 2010 | 2002 Yamaha TT-R 250

1 Answer

I have a 2007 Midnight Venture. It idles extremely rough (seems to be on 2 cylinders)spits and backfires even when warm except when the choke is on. Low end torgue seems to be missing. It also backfires...

Your primary jets in the carbs are clogged. (FYI- each carb has three metering jets, a primary, the needle or butterfly and the main jet. Each jet has an RPM area where it controls.) Simply blowing them out will not fix this problem. The carbs need removed and properly cleaned, the jets need to be probed and cleared then a new fuel filter installed to prevent it all from happening again. best wishes.

Aug 20, 2009 | Yamaha Royal Star Tour Deluxe Motorcycles

1 Answer

2008 Yamaha Aerox R carburetor jetting

Clean out your carb?
Sounds like a blocked low idle jet
, but I might be wrong, (have been before :) )
Carburettor cleaning fluid is good stuff.
Hope you get it sorted.

Sep 06, 2017 | 2008 Yamaha Aerox R

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

Related Topics:

118 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 2 Expert

314 Answers


Level 3 Expert

1216 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1165 Answers

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

Answer questions

Manuals & User Guides