Production data Yamaha RD125 1973 - 1986
It can be very hard or sometimes even impossible to find production data for Yamaha's from the seventies. Apparently Yamaha didn't keep record of their production data back in the days... or maybe those books are laying, covered in dust, somewhere at an attic.. who knows. Thanks to Yamaha Australia I got production numbers of most of the Yamaha RD125's. I've put them together in an Excel file to give you an idea of the numbers of Yamaha RD125's ever made.
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| Production data Yamaha RD125 |
Tip: right click on the pic to open it in a new window for a better view.
My Yamaha RD125 has engine - and frame number 466 - 001172 which makes it one of the first batch Yamaha RD125A's .
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| Engine number Yamaha RD125A |
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| Frame number Yamaha RD125A |
Specifications Yamaha RD125 A/B
Yamaha RD125 B Specifications
Engine – air-cooled twin-cylinder two-stroke
Capacity – 124cc
Bore & stroke – 43 x 43mm
Carburetion – 2x 18mm Teikei
Max Power – 13.8 bhp @ 9500rpm
Torque – 7.6 ft-lbs @ 9500rpm
Ignition – contact breaker
Transmission – 5-speed chain final drive
Frame – steel tube engine used as a stressed member
Suspension – 28 mm telescopic forks twin rear shock pre-load adjustable
Wheels – 2.75 x 18, 3.00 x 18
Brakes – 150mm twin leading shoe drum, 130mm single leading shoe drum
Wheelbase – 1245mm
Weight – 115kgs
Fuel capacity – 11.4 litres
Top speed – 76mph
Source: www.classic-motorbikes.net
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| Specifications Yamaha RD125 |
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| Specifications Yamaha RD125 |
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| Dimensions Yamaha RD125 |
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| Maintenance specifications Yamaha RD125 |
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| Maintenance specifications Yamaha RD125 |
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| Maintenance specifications Yamaha RD125 |
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| Maintenance specifications Yamaha RD125 |
Service Data Yamaha model RD125 A (Printed December 1973)
Issued to all official Yamaha workshops in 1974.
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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| Yamaha Service Data Motorcycle Model RD125A |
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Parts lists and Manuals
Basically the Yamaha RD125A is the same as the 1973 RD125. The 1973 RD125 was sold in Europe as the Yamaha AS3. If you're looking for parts for your 1974 RD125 A, you can use the 1973 RD125 parts manual (download
http://www.yamaparts.com/manuals/ ) , however there are some minor differences which you can find in the RD125A supplement (4 pages, see below).
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| Yamaha RD125 / AS3 Parts manual 1973 |
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| Supplement Yamaha RD125A page 1 - Refer Yamaha RD125 1973 parts list |
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| Supplement Yamaha RD125A page 2 - Refer Yamaha RD125 1973 parts list |
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| Supplement Yamaha RD125A page 3 - Refer Yamaha RD125 1973 parts list |
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| Supplement Yamaha RD125A page 4 - Refer Yamaha RD125 1973 parts list |
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| Cover Owners manual Yamaha RD125 January 1973 |
Road Test Yamaha RD125A
Article in Cycle from 1975
Source Cycle 1975
Another article on www.classic-motorbikes.net
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| Cable routing Yamaha RD125 |
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| Wiring diagram Yamaha RD125 |
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| Wiring diagram Yamaha RD125 |
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| Torque specs Yamaha RD125 |
Advertisement RD125 - RD125A
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| Advertisement Yamaha RD125 |
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| Advertisement Yamaha RD125 |
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| Advertisement Yamaha RD125 |
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| Advertisement Yamaha RD125 |
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| Advertisement Yamaha RD125 |
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| Advertisement Yamaha RD125 |
nice post brother
ReplyDeleteThanks Adi
ReplyDeletehi my Yamaha rd 125 engine/frame number is as3 220116 what year is it and is it a or b thanks kerry
ReplyDeleteHi Kerry, it's a Yamaha 1974 AS3, basically the same as a Yamaha RD125A
DeleteHey, I have an AS3 with frame number AS3-007xxx - what year would that be? Are all the pistons the same for all AS3/RD125s from 69-75? Thanks, Giles
ReplyDeleteHi Giles,
ReplyDeleteYou need a complete frame number to tell what year it is. As it starts with AS3 it's either 73 or 74. The pistons are not the same for the AS3 and RD125 engines. Have a read about the differences here: https://yamaha-rd125.blogspot.com.au/2015/11/fitting-new-pistons-and-rings.html
Thanks. Frame number is AS3-007155
DeleteOk, so the 466 pistons definitely can not be used in place of the 307 pistons?
So what do you think?
DeleteHi Giles. Your machine sounds like an actual AS3, rather than the early RD125 type which has AS£ engine prefix but the numbers started at 2xxxxx. Your machine is probably 1971. The 307 pistons have no 'windows' in them unlike the 466 pistons which did as the RD125 models had reed vallve induction with extra ports in the cylinder walls
ReplyDeleteHello
ReplyDeleteIn the attached production data, there is no 1E7 model. Why?
I have such a Yamaha
It's there, but exel mixed it up a bit to 1.00E+7.
ReplyDeleteHej har en yamahamotor med nr
ReplyDelete1E7-001922 vilken modell?
Jag vet att det är 1976