Question about 2001 Yamaha XVS 125 Dragster
Posted by Anonymous on
Hi, Anonymous and the usual suspects are:
1. Idle speed improperly adjusted.
2. Inlet system air leak.
3. Damaged or restricted fuel tank venting system.
4. Dirty or damaged air cleaner element.
5. The accelerator pump is inoperative.
6. Vacuum piston assembly malfunction.
7. Enrichener valve is not seated or leaking.
8. Restricted fuel supply tract.
9. Plugged bowl vent.
10. Loose or plugged fuel and air jets or passages.
11. Improper float level.
12. Worn or damaged needle or needle jet.
13. Loose or plugged main jets or passages.
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Drill the Stock Exhaust stage 1 2 3
Yamaha XVS 125 00 Service Manual
OEM parts for Yamaha
Yamaha DRAG STAR XVS125 Owner Manual
Posted on Feb 07, 2017
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Posted on Jan 02, 2017
on right crankcase by brake pedal you will find a round cover with 3 bolts in it, remove this and you will find some more bolts to remove the second casing that holds the oil filter, be careful not to over tighten the bolts when putting back, i did and stripped the thread, complete change takes about 15 mins
Posted on Mar 22, 2009
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
SOURCE: i HAVE A KNOCKING NOISE
That could be big end or main bearings. You won't know for sure until you take the crank out or remove the barrel and check for play in the bearings.
Posted on Feb 23, 2011
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