Question about 2002 Yamaha TT-R 225

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2001 ttr 225 bike sat all last year. Would start this spring but not idle. Now it won't start. I know the carb had old gas. Where can I find a manual so I can take it apart and know what parts to replace? ie jets, o-rings, gaskets etc.

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Start by removing and cleaning the carb, it may not need any parts.
also change the oil, fit new air filter, new spark plug, and check the valve clearances

Posted on May 27, 2011

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Posted on Jan 02, 2017

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give it a full service new feul clean carb clean air filter then it should start

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2002 yamaha ttr 225 idles high when let off gas but eventually idles down on its own and hard to start when cold with choke or without


Hi, David and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links blue below. Good luck and have a wonderful day.
TTR 225 Carb Problems
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http://tjsconcepts.com/ttr225/TTR225_Service_Manual.pdf
OEM parts for Yamaha
http://tjsconcepts.com/ttr225/TTR225_Owner_Manual.pdf

Jun 21, 2011 | 2002 Yamaha TT-R 225

1 Answer

My 2008 ttr 230 has been started in months. i purchsed a new battery and it still would not start.


The battery is only the beginning. The carbs are most likely gummed up. The idle jets are plugged, and the old gasoline in there wouldn't help. Your idle jet, (pilot jet, whichever name you prefer) is plugged up in your carburetors. If the bike was stored improperly, or old/dirty gas was in the tank, these jets get plugged up pretty easily. The idle jet is where your bike pulls gas while it has a closed throttle position. Its the smallest jet in the carbs and makes it hell to start a bike when they are plugged up. Good thing for you, is that you only have one carb, and it is very easy to take out and clean. The jets are under the BOTTOM cover of the carbs. You will see the main jet is on a Taller part of the carb and the idle jet is next to that. Here is a picture to help you, It isn't the exact carb, I borrowed this pic from another website. Number 1 is the pilot jet, 2 is the main jet and 3 is where the fuel comes into the carb. This is your float valve. This has to be clear of stuff too or it won't shut off properly and you will leak gas from the carbs. So get yourself a can of carb cleaner and start spraying!
Bruno


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Nov 17, 2010 | 2002 Yamaha TT-R 225

1 Answer

Bike has sat for years without being started. I just changed the plugs, gas and battery. The bike will start but once you let off throttle it immeadeately shuts off.


yes buddy the idle screw is too low on carb is a screw idle screw turn this in 1/4 of a turn at a time till it idles at 1000rpm or it dles ok b60519a.jpg

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Trouble starting my 2003 TTR 225


how old is the gas it may have a lot of water or junk in it.drain the bowl on the carb and drain the fuel out of the tank, check the petcock screen inside the gas tank. also i would not spray start fluid into the plug hole, it could blow a hole in the top of your piston,spray a little right into your air cleaner or carb.good luck

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Yamaha TTR 125 L won't idle


this is very tipical. when bikes are stored the fuel varishes up the jets & needles. soak the carb. moving it back and forth in the soak solution. then blow every jet and orfice with a controlled air source. note: any speck of rust or dirt can plug these jets. pay attention to detail and do every thing twice. then install the carb and adjust it to your riding style. later Spike

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