Found this link to explaining the spark plug code....

http://www.spark-plugs.co.uk/pages/technical/ngkjpg.htm

Other may find this useful.

Thanks Lads......

I'll get a BR9? and I will see what is available and try them out.

What is the difference between Br8eg and BR6es. I take it its some sort of heat range?

The plug is a normal grey/whitish, I will do as suggested and check the plug cap. Not sure I can turn the main lights off as suggested as they seem to be on perminant. As stated it runs fine when the revs pick up. With the BR8Eg it runs fine low down. It ticks over and revs fine at stand still. when...

Not sure what oil is in it at the moment. I will make sure I use semi - synthetic though.

I used the bike to work this morning with a BR8ES and it was spluttering and kicking and fine when revved and pushed hard. Just thinking the problem may well be somewhere else? Carb or possibly a faulty CDI

Hi to All Have had my AR for a couple of weeks now and love it to bits. It’s got mugen all over and I purchased with Mugen CDI, and some other mugen bits supposedly installed. I have trouble starting, but if I change plug it seems to start OK. I have 2 different plugs that drastically affect the rid...

Just got my Crm250ar today and had my first ride. Wow... it was so good, I've been after a CRM for a while now. I also have a KX250 which is road registered and the CRM is far better even after one ride. I can see why the CRM has its own site/forum. I do hope to contribute fully to the site and lear...