Yamaha ID Numbers

[Dino Rider]

Just curious as to why my IT175 G has a serial number starting with 4J0 (steering head and engine case) when all the literature i see , even original manual says 3R6 . Is this an oceania model thing Not that it matters , just find it a little odd that i cant find any mention of 4J0 anywhere.

[motomaniac]

http://www.dropbears.com/y/yamaha/modelcodes.htm

that is weird 3R6 should be for 80 models. 4JO is listed above but no year or model ?

[Nathan S]

Speed and Sport recognise the 4J0 number, suggesting its not an exclusively Oceania prefix.

[Iain Cameron]

Dino Rider you have a 81 " H " . Yamaha 81 models all started with " 4 "  regards Iain

[Dino Rider]

Dino Rider you have a 81 " H " . Yamaha 81 models all started with " 4 "  regards Iain

compliance plate says 3/80 and the link from motomaniac is the first place i have seen mention 4j0 ,various other parts with numbers cast on them say 3r6 .
Thanks for the info ,still no clearer about it but it makes no difference .I bought it in 1984 and used it in the local bush tracks for a while then it spent the better part of twenty years leaning up against my dads shed until a couple of years ago. i have tidied it up with the intention of getting my wife interested but while she said she was keen in the end she is just not in to it.

[Iain Cameron]

Dino Rider Yamaha 80/81 models shared a majority of parts . strange the id plate 3/80 the 4j0s would not have been released till Nov /Dec  is the plate the original or a swop from an 80 mod? as I said strange .My referance is from Yamaha Dirtbikes by Colin Mackellar it has all the year mods and no's

[Dino Rider]

the plate seems to be all original  and the numbers match the engine