Greetings from the UK, the land of cold rain and warm beer. I am a 75 year old re-cycled teenager who has owned Hondas since 1967. Up until this week the stable consisted of a 1966 CL160 (work in progress!), and a 1976 CB400/4 which I have owned for 34 years and is my regular bike for riding. I am gradually reaching the stage where it's getting a bit of a pain in the b***s to get the 400 onto the centre stand. The answer (hopefully) was purchased this week, I am now the owner of a 1987 GB250 Clubman. As we all know these were built for the Japanese home market only meaning they are a bit thin on the ground in the UK. Superb little machine which looks to be in good condition, plus I can put it on the stand and all my body parts stay in their correct location. I have no handbook, and am not too sure about tyre pressures, all the stickers on the bike are in Japanese, but it does show the tyre pressure as being 2KG/sq cm for both wheels, does this sound about right? I belong to a previous age where usually the front tyre ran at a lower pressure than the rear. Finally, as it was built in 1987, I don't recall there being any synthetic oils about then, would 10W40 mineral oil be ok, I have plenty of this and I don't fancy the idea of encouraging the clutch to slip. I think there could be more queries over the next few months. Regards, Mike.
Hi Mike Welcome to the forum. I can understand your regarding getting the CB on the center stand , i also had issue's in the end with my old bike , simply to heavy and to tall to get my leg over. Found some listing's for you to look over. I'll go through my magazines and see if i have a write up on your model. https://www.ebay.com/itm/331534392911 https://yahoo.aleado.com/2084022878-category-leaf.html https://www.motorbikecatalog.com/model/honda/gb250.html One of our forum member's also has a GB 250 https://2fiftycc.com/index.php?threads/same-engine-1988-cbx250-cbf250-and-gb250.8629/
Found this for you though , maybe you might be interested if your keeping the bike. https://www.ebay.com.au/itm/255398267215?hash=item3b76ec494f:g:wGwAAOSwuDxiBcpR Just found this. https://en.impex-jp.com/catalogs/moto/honda/16kl8ej2.html
Hi Andy. Should have mentioned that you had issues with that supplier , it was mainly for the parts fiche as the owner hasn't tech info to suit the bike by the sounds if it.
As the OP is based in the UK CMSNL would be a better bet for parts and parts listings... https://www.cmsnl.com/honda-gb250_model50725/
Also check David Silver, he's a british based honda parts supplier with his own museum. He's not the cheapest but does have a lot of stuff.
Thanks everybody for your help and advice. Buying a bike in UK that is designated for the Japanese home market only has proved "interesting" to say the least! I'm fortunate that David Silver Spares is just a 25 minute ride from where I live, the added bonus being that those 25 minutes are along some of our best twisty country roads. They are able to supply/obtain parts for the GB250 which are common to other models, so at present I have obtained a OE oil filter and fittings from them, and thanks to the fact that this 75 year old brain can still trawl through the internet, I have a OE Air filter on its way from Japan, and a front brake disc on its way from Brisbane OZ. Having just drained the oil from the 250, I'm sure that Honda sometimes throw in a fine detail to test the owner's patience. The drain plug!!! I reckon they hung it on a piece of string and built a bike round it!! Oh joy, how we love our hobby eh! Regards to all. stay safe and well. Mike.