Question about Yamaha RD 250 Motorcycles

1 Answer

I have a early to mid 70s yamaha rd 200 bike motor that has been modified to suit go kart racing.I am trying to pinpoint the correct year of manufacture.The serial # is 397-000177.any help would be apreciated.Please note its a RD 200 not a 250

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Master
  • 3,567 Answers

You will not be able to use the serial number for identification. It only idebtifys the assembly plant and sequence of production. Your motor was the 177th built in that engine series.

Posted on Aug 06, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.

Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Need to get top speed out of a 13 horse Honda motor for go kart

The larger the gear on the engine shaft and the smaller the gear on the drive axle the more speed you'll get, I hope you're thinking about top braking power for it as well lol good luck.

Apr 27, 2015 | Small Engine Carb Repair Tool: Mini-bike...

1 Answer

200 rd wiring diagram

Hi, Steinar 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 links below. Good luck and have a nice day.
200 rd wiring diagram Google Search
Yamaha Motorcycle Wiring Diagrams
Yamaha RD 125 200 DX 74 Service Manual
OEM parts for Yamaha

Btw, I’m available to help over the phone in case u need at

Mar 02, 2013 | Yamaha Motorcycles

1 Answer

Wiring diagram racing banshee

The best thing to do would be to get the diagram for a RD/RZ 350LC and the diagram for your KX and use this for comparison. There is no such thing as a "Banshee" diagram. It is a custom built motor, made using a Yamaha RD LC engine.

Dec 11, 2011 | 1986 Yamaha RD 350

1 Answer


I assume you want to modify the engine for better performance, i.e. a quicker, faster bike. The only thing that will really make a difference is to install a race cam. Other modifications such as a foam air filter, re-jetting the carb, running a streight pipe exhaust, gas additives and hotter spark plug are just smoke and mirrors when compaired to a race cam.

Your little 110cc can probably match a stock 150cc if you have a race cam. Yes, you will need to re-jet the carb to match what the cam puts out but re-jetting is a simple and cheap process. The custom cam will cost $200 or so. Send your cam in, they rework the cam faces and send it back. If unfamiliar with cams and cam shaft timing I suggest you have a shop do the tear-down and re-assembly.

Contact Web Cam Racing (1-951-369-5144) in California and they can fix you up. I guesstimate $200. plus shipping both ways.

Sep 19, 2009 | 2008 Yamaha Crux

1 Answer

What is weak points with xs750 motor what do i need to look out for Ray.

XS750 early ones had trouble with piston rings and big ends, this was modified petty qiuck. preimary drive is by hy-vo chain, these wore out in a few thousand miles reulting in horrible vibration, chains were replaced under warranty. gear box bolt used to fall out sending you from top back to first, modified tab washer fitted under warranty. to tell if warranty work was done, dealer should have stamped two dots/punch marks in front of engine number. primary chain was modified 4 times, part number has 04 on the end. big problem now is that these were discontinued by Yamaha several years ago.... no bike! USA models had lower tune cams, UK were higher spec. engine is heavy and not much power, but a triple is the best sounding thing there is.

Aug 09, 2009 | Yamaha XS 650 F Motorcycles

1 Answer

1985 Yamaha Maxim XJ700 not starting

It seems the float chamber of the carbs are not getting enough fuel (gas).
Try to check this first by opening the carburator float chamber drain screws....thn select the petcock to 'prime' positon and see if theres fuel running out of those drain screws freely.If not thn it time to clean the carbs.
Not bad too to remove the spark plugs and clean them and regap.
Hope this helps!

Jul 13, 2009 | 1986 Yamaha XJ 700 X Maxim

2 Answers

Trying to find year of yamaha mx80

I would suggest calling Yamaha customer Service (if you're in the US, the # in the US is 800-962-7926) and ask them for help in identifying your bike. I called them on Friday and they were able to tell me what I had within a couple of minutes.


Mar 19, 2009 | 1986 Yamaha RD 350

Not finding what you are looking for?
Motorcycles Logo

Related Topics:

412 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 2 Expert

314 Answers


Level 3 Expert

1216 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1165 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides