Hello friends!
I need some information.
Is anybody know? How are marked the flywheels according to table below? I want to know the numbers and letters applied to the surface of flywheels. It is how I understand is four different type of flywheels for MC18.
I need to know this information to find the flywheel used whith PGM-II.
I'm thinking about conversation my MC16 to PGM II ignition.
And one more question. Can me someone explane? Why the string between KV3-702 and KV3-703 in the table below filled by information? Is it a misstake? Is it need to shift the data lower?

https://workshop.nsr-world.com/MC18/MC18/E7Frame.html
REF. IDPart number Description NSR 250 MC18-100 NSR 250 MC18-110 Engine No.
R2J R4J R5K R5K-2
6 31110-KV3-701 Flywheel    COMP.  (DENSO) 1 - - - -------- 1031865
31110-KV3-702 Flywheel    COMP.  (DENSO) 1 - - - 1031866 1052731
- 1 - - -------- 1052731
31110-KV3-703 Flywheel    COMP.  (DENSO) 1 1 - - 1052732
31110-KV3-771 Flywheel    COMP.  (DENSO) - - 1 1

You need part number 31100-KV3-771 for a PGM-II.

'88 R2J
31100-KV3-701 ... -------- 1031865 [up to engine number 1031865]
31100-KV3-702 ... Engine numbers 1031866 to 1052731

'88 R4J-SP
31100-KV3-702 ... All engine numbers up to 1052731

'88 R2j/R4J
31100-KV3-703 ... All engine numbers from 1052732 onwards

'89 R5K/R5K-II/R6K-SP
31100-KV3-771 ... All engine numbers

The final revision (Japanese only) Parts List for double-checking can be found here: https://manuals.nsr-world.com/view-87-89-parts.php
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Andy.
NSR-WORLD.COM

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Andy wrote:You need part number 31100-KV3-771 for a PGM-II.
.....
The final revision (Japanese only) Parts List for double-checking can be found here: https://manuals.nsr-world.com/view-87-89-parts.php

Andy, thank you.
My problem is to understand now. What kind of marking the 31100-KV3-771 flywheel has on his surface. I am not find any flywheel that bear the marking of the part number.
I see only this information on the flywheels. And how I see markings are different on the different flywheels. How to anderstand which letters and figures corresponding to 31100-KV3-771?

These flywheels have other markings.

Almost certain 037000-2460 LKZ06 is 1989.

037000-2641 is MC21.

1987 and 1988 flywheels are a noticeably larger diameter than 1989-1996.
_________________
Andy.
NSR-WORLD.COM

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