Question about 2005 Yamaha XT 125 R

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What year? I have a dt175 with no vin plate but the engine no is 443-020018.thats all I could read.what year do you think it could be? thanks bill

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Hi, Bill 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.
Yamaha Vintage Dirt Bike Guide Off Road com
Yamaha DT100A 1974 Service Manual
OEM parts for Yamaha

Posted on Dec 27, 2016


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SOURCE: yamaha DT175 1975 -- won`t idle back

Sounds like the reeds are bad.

Please rate this fixya

Posted on Jan 28, 2009

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SOURCE: yamaha DT175 1975 -- won`t idle back

I had the same problem recently where the idle speed was too high (3000 RPM) when the steering was pointing hard left. Here are some possible solutions to your problem. I have listed them in order of probability:

1. Choke. Maybe sounds too obvious, but if everything else is in good working order, this is usually the cause of a high engine speed at idle. Locate the choke and 'play' with it to see if this has an effect on RPM.

2. The throttle cable is tight or catching. Try loosening the lock-nut and teasing the cable away from the grip end. Don't force it too much to avoid snapping it. If it releases, check the throttle free-play is correct, and adjust if necessary. Lubricate cable at both ends to reduce any restricted movement.

3. The throttle cable is rusty. Try using a bit of WD40 at each end of the cable (handle and engine alike) and use a lubricant. 1975 is an old bike for sure, so clean & check the entire length of the cable for cracks or splits. Remember to wipe away any excess WD40 or lubricant after any maintenance. If you discover that you need a new throttle cable, these are cheap and easy to fit, and are normally available through eBay.

4. The engine idle speed setting is incorrect. There should be a screw situated somewhere around the engine case (you may have to consult the manual to find it). Turning this screw clockwise/anti-clockwise will adjust the idle speed up or down. Suggest you only perform this as a last resort.

5. Check oil. The engine idle speed can be dictated slightly by oil levels, so make sure the oil levels are between min/max on the dip-stick. Also, ensure that you are using the correct engine oil for your machine (consult the user manual), e.g. 2-stroke or 4-stroke, mineral or semi-synthetic, etc.

As I cannot guess what you mean by 'too high' when referring to the actual idle speed, I would suggest that if engine speed is more than 500 RPM above normal, it will most likely be an issue with the choke or throttle cable.

I would suggest you try finding a bike-specific servicing manual, but these are often hard to come by and can be pricey if you do eventually locate one. However, I do suggest you think about investing in the Haynes Motorcycle Maintenance Techbook: this is a generic book of bike maintenance and has loads of hints and tips that could save you loads on servicing bills. As most parts of any motorcycle are based on the same idea, much of the book answers even specific questions that apply to your problem.

Anyway, good luck !!

Posted on Jan 29, 2009

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Hi, Johnny585 for more information about your question and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
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OEM parts for Yamaha

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Sounds like the reeds are bad.

Please rate this fixya

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