Question about 2003 Yamaha XVS 125 Dragster
Changed gear unit assay, still not working. Tried spinning cable (disconnected from speedo drive), clock works, but it doesn't when cable is connected to gear unit, what else could it be?
Hi, Anonymous for this situation I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. 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.
Repair Yamaha Star Speedometer Odometer Not Working
Yamaha XVS 125 00 Service Manual
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Yamaha DRAG STAR XVS125 Owner Manual
Posted on Feb 04, 2017
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Posted on Jan 02, 2017
SOURCE: i have a yamaha dragstar
If it has been sitting for a while I strongly recommend you remove the carburetors and clean them thoroughly, you will need to make sure you remove all the jets, especially the pilot jets because that is the smallest jet in the carb that will plug and it is often the one that will prevent the engine from starting.
Try using some WD40 in the back of the carbs when you try to start it after you clean the carbs. I don't like to recommend starting fluid because it is volatile and can easily catch on fire if the engine backfires.
I'd also recommend replacing the spark plugs as well. Make sure you have good fire. (turn the motor over with the plugs out and grounded on the head to make sure you can see the spark)
I also recommend pouring a small amount of Marvel Mystry oil down each spark plug hole to help "reseal" the rings. Remember that sitting is not your friend and you may have to get the rings back to life by using the special oil.
Just remember you need three basic elements to make an engine run:
Let me know if you have any further questions.
Posted on Dec 17, 2008
Hi there fellow XVS dragstar owner!
I had the same problem before. It is usually caused by the wrong jets installed. have it Replaced with the standard jets that came with it... this will solve the problem on acceleration. Make sure the fuel and air mixture knob is set to 2.5 turns-out from full close. clean the spark plugs.. better, replace it with a new one to ensure clean burning of fuel. also, use unleaded gas. this burns better.
hope this helps
Posted on Mar 29, 2009
That engine uses automatic cam chain adjusters. There is no manual over-ride or adjustment. If the cam chain is loose, you need to replace the adjuster at the least and possibly the cam chain and guides.
Posted on Nov 06, 2009
Testimonial: "What can I say...A very helpful reply , cheers"
First I would change all the spark plugs, and if that didn't make a difference then it sounds like the coil(s) are warming up and breaking down........when it starts to skip take a good pair of pliers with good rubber on them and pull each spark plug wire, when you get to the one that the running doesn't change then I would replace that particular coil
Posted on Feb 17, 2010
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