Question about 1979 Yamaha RD 250

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Is my 79 Yamaha 250 a RD or RT, it has the following Nrs. Frame: 4L1-00485. PVA:79/6553. Motor 4L1, 2 Stroke, Water cooled. I had it given to me at the weekend and I would like to restore it. Jake

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Its RT.... RD is an air cooled engine !! n RT is liquid coolde

Posted on Jul 20, 2009

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Posted on Jan 02, 2017

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Need paint code number for yamaha competition yellow


Hi, Simon 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.
http://www.aircooledrdclub.com/smf/index.php?topic=478.0
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Yamaha RD250 RD400 1976 1979 Service Repair Manual PDF Download Manuals...
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http://mybikemanuals.com/yamaha/yamaha-rd-owners-manuals

Apr 15, 2013 | 1979 Yamaha RD 250

1 Answer

Can I use a yamaha 250 lc piston kit in a yamaha rd250. on the hvc cycle website it shows that their piston kit will fit both. I can get a lc kit for much less than the rd kit. thanks


Hi, Kdw911 works for me, for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $0 you can download another one.
For more information about your issue 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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Jul 22, 2011 | 1979 Yamaha RD 250

1 Answer

Hi, I have a RD Yamaha?(circa 1974) I believe it has a 350cc motor. The frame and motor were two different bikes, The frame and engine number is different. How can I check that the engine is I think is a...


The CC's are on the bottom of the cylinders..cast into them.. should be on the outside, bottom where the cylinders meet the cases..
If you remove the head... this will define it.. the 350 has a bore / stroke, 64 mm × 54 mm (2.5 in × 2.1 in)

Aug 11, 2017 | Yamaha RD 350 Motorcycles

1 Answer

What is the point gap on the 1972 Yamaha 250 2 cyl 2 stroke?


usually libraries sec629 hav olschool books--there r manuals online fixya that sell um--by the way nice bike

Jun 29, 2010 | 1973 Yamaha RD 250

1 Answer

I'm interested in purchasing a repair manual for my 1989 rd 350 yamaha motorcycle. Is there an auto store, or any kind of store I can buy it from? Instead of buying it online. I'd really appreciate any...


first off what country are you in ???? the 1979 rd 350 was an air cooled engine, same as 250 . the 1989 engine was water cooled with yamahas ypvs exhaust valve both very differnt in design although some frame and body parts cross over.the manual for the air cooled is: isbn 0 85696 505 7 . i dont have the water cooled number but could find it you require. the rd was exported under various different names ie: rd , rz , ypvs and so on. you can contact me @ marcusloud@blueyonder.co.uk. hope this helps.

Sep 03, 2009 | 1979 Yamaha RD 250

3 Answers

Oil change on a 2003 yz250f.


the oil in the frame is pumped into the crankcase, i had the same problem so i asked at the yamaha dealers. the dipstick on the frame is for checking the oil and the plug on the crankcase is for filling it with oil. I believe it takes about 1liter of oil from other posts but i could be mistaken

Aug 04, 2009 | Yamaha YZ 250 F Motorcycles

2 Answers

Im trying to find out what yamaha i have i know its a 250 registared 1977 looks like a scrambler i wish to sell it and am not sure wat its worth its not an rd350 i had to put that in model description


If it has lights, etc. it is most likely a DT250. If not it is likely an IT250
Google 1977 DT250 and look in the images to see if it matches your bike.

Jun 27, 2009 | Yamaha RD 250 Motorcycles

1 Answer

Oily watery stuff coming out off the exhaust, oil pump is set ok


is this bike a yamaha rd 350 twin cylinder 2 stroke? if so, its air cooled and you should not be getting a ltr of water.. but it is common for them to have a "oily" fluid come out the exhaust because it is a 2 stroke. but not alot. it comes from the engine not burning all the oil gas mix. does the engine spit and sputter? make sure there is no water in the tank, make sure the air filter is clean and buy hotter spark plugs. also adjusting the fuel air mixture may help. hope this helps...

Mar 11, 2009 | 1986 Yamaha RD 350

2 Answers

Where is the 2 stroke oil tank on a 74 yamaha rd 350.


You are confusing yourself. Gearbox oil does go in via the dipstick. Engine oil goes in under the seat. The engine oil they are speaking of is called " TWO STROKE ENGINE OIL ". It is designed to mix with the fuel by being pumped into the carb intake system along with the fuel. Any motorcycle shop, auto shop, lawn equipment shop, gas station and many grocery stores and convience stores will have this oil.

Mar 11, 2009 | 1974 Yamaha RD 250

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