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1993 yamaha kodiak ymf 400 how to set ignition timing

Its starts when you choke it and it dies out and if you full throttle it same thing happens sometimes it will run for a short period of time and miss and backfire then if you gas it alot it stalls.. what could it be

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 3567 Answers

SOURCE: Stalls out when choke off and reverse light blinks

The pilot jet is plugged up. Remove the water trap bowl at the bottom of the petcock, (gas valve). Is there any water or trash in the bowl? Drain a cup of gas from the tank. Is there any water or trash in the cup? Dump it, clean it and re-mount it, ( not all bikes have a water trap bowl ).

Drain the carburetor. There should be a screw on the lower side of the carb float bowl. Remove the screw then replace it after the fuel drains. remove the carburetor from the engine.

Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. About 3/8" from the main jet you will see a small brass screw. This is the pilot jet adjuster. Turn the adjuster 1/2 turn counter clockwise. Make a scratch on the casing around the adjuster so that the scrach lines up with the slot on the screw. From this point, carefully count the number of turns until the adjuster can be removed. Spray carb cleaner into the jet then replace the adjuster using the same number of turns such that the screw slot lines up with the scratch mark.

< < READ CLOSELY > >
Remove the idle screw and the air screw on the outside throat of the carb and spray into the screw holes as well. Be sure to put these two screws back in the same hole they came out of. IMPORTANT > do not tighten these two adjusters down. Only screw these in until they LIGHTLY seat. Now turn each adjuster one and one half turns outward. Put the rest of the carb back together, clean the air filter and install the carb. Let the float bowl fill then start the engine. This process should get you back on the road.

Please rate this solution. Thanks!

Posted on Apr 29, 2009

  • 3 Answers

SOURCE: We just got a 2000 Yamaha Kodiak. Idle is too low

yea if your sitting on it there should be a plastic screw on the carburetor that runs to the other side you can adjust it with your hand as it is big enough to turn by hand have it running and adjust it to your liking

Posted on Jun 06, 2009

  • 16 Answers

SOURCE: 2003 Yamaha Kodiak starts and idles fine but as

hey,
Maybe your break calibars could be sesede.

Posted on Jul 14, 2009

jigsaw_9077
  • 308 Answers

SOURCE: 06 kodiak sputtering.

Adjust the fuel idle and the accelerator cable.

Posted on Jul 27, 2009

robotek
  • 1512 Answers

SOURCE: 350 raptor only runs with full choke on ,

Hi Mike,
You will find that there is a problem with the carbie. It runs with the choke on because the choke engages the "enricher" circuit. The idle circuit is different a different circuit inside the carb. When just crack the throttle on, you use the pilot circuit, and then main jet with more twist of the grip. You will need to completely strip the carb, remove all jets, spray carbie cleaner throughout, and blow out all capillary tubes and holes inside the carb with compressed air. Pay particular attention to the fine holes inside the venturi near the butterfly valve. You may need to use a fine piece of wire, like a guitar string to open up any that are clogged.
There is not much else that will cause the symptoms you have. Check for air leaks about the inlet manifold also, spray some carbie cleaner about the manifold connections boots, the revs will change when it sucks up the cleaner through the leak.
Happy to talk to you more about it.
regards robotek

Posted on Jan 24, 2010

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