Question about 1993 Yamaha FZ 750 KT (Europe)

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Charging system not charging like it should.

I have a 1974 RD 250 and the charging system is not charging the battery and has a hard time keeping the lights going while the battery is charging. When it is running and go's to idle you can see the lights dim and the blinkers will stop working. Is there a way to fix that or is there some kind of new system that I can put on it that will adapt to it. please let me know.

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  • spfd19 Mar 11, 2009



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  • 132 Answers

Check the generator output as this normaly fails on this model

Posted on Jun 19, 2009

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What oil is recommended for the oil tank in a 1974 yamaha rd250?

The 1974 RD 250 has a two cycle engine. The oil tank is for engine oil injection. You will use a good quality 2 cycle engine oil that is recommended for oil injection. Fill the tank and remember as you drive the level will go down, so keep an eye on it. If the tank runs out of oil you will ruin the engine. Also there is oil in the clutch/transmission case. There should be a site glass or dipstick attached to the filler plug. After you remove it do not screw it in to check the level (make sure the bike is sitting level). This is a different type of oil as well. I hope this helps! Rod

Aug 12, 2015 | Yamaha Motorcycles

1 Answer

What manufacture date for RD 250 LC Eng number 5E1-100813

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. RD250A (copy and paste)
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Jul 18, 2014 | 1979 Yamaha RD 250

1 Answer

What kind of gear box oil and how much is for a 1974 yamaha rd 350

Hi, JD 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 $0 you can download another one. 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.
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Jul 04, 2014 | 1974 Yamaha RD 250

1 Answer

How to correctly time the ignition, point gap plugs etc. ?

Hi Carknocker53, I am sorry you can't find the first and best tool you ever bought for your Yamaha but despair not for a mere $15.00 you can download another one. For more information about your issue, please visit the websites below. Good luck and have a nice day.
1974 Yamaha Motorcycle Service Repair Manuals

Oct 28, 2010 | 1974 Yamaha RD 250

1 Answer

Can i fit the top end of 1977 rd400 on the bottom end of a 1974 rd250?

I know the rd250 and rd350 interchange. The rd400 cylinder base gaskets are the same as the 250 and 350. You just need to know if they have the same crankshaft stroke is the same and the if the piston pins are the same diameter(they are also a different pn#).

Oct 02, 2010 | 1974 Yamaha RD 250

1 Answer

Please forward me the wiring diagram of the 1974 Yamaha RD250 as the wiring of my bike needs to be attended.

Go to the site below and you can free download an Owner's manual. There is a 1976 model manual there that will have the same wiring harness. Cheers!

Sep 02, 2010 | 1974 Yamaha RD 250

1 Answer

What kind of battery does the 74 rd250 take and how much does it cost

What is this ... call motorcycle shop and ask them. This is a simple thing to do.

Oct 01, 2009 | 1974 Yamaha RD 250

2 Answers

What is the value of a 1974 rd 250 cc yamaha ....100 % original with 383 miles

A similar new bike costs around $2500. If it has been kept in a garage, I would guess your bike would be worth $1000 to a collector. It is 35 years old and there are very few parts available. A person who wants to actually use the bike as transportation would be foolish to buy it due to the parts problem. Additionally, most dealers will not work on a bike more than 10 years old.

Whatever gas was in it the last time it was ridden has evaporated leaving a varnish residue behind. The gas tank may be well rusted on the inside also. This is not a good combination. Generally, the varnish can be the bigger problem if it has plugged up the circuits in the carbs. Honestly, I would love to have it down here in Dallas. If something goes wrong I can fix it... IF the parts can be found. I checked Babbit's and found lots of periferal parts, but side covers, crank, generator, pistons and rings, crank seals, cylinders and heads, carbs, fenders, forks,

Aug 23, 2009 | 1974 Yamaha RD 250

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