Ian589

Blowing down a small tube works on mine.

Today cleaned all electrical connectors and earth points, replaced the rectifier and I now have a working fan thet now cuts in when the bike warms up. Even shortened the HT lead and fitted a new iridium plug so the bike starts easier, finally happy days. Thanks everyone for your help.

Thanks I'll give it a try.

The bike doesn't have a battery and the head light currently doesn't have a bulb.

Yes I've got a multimeter just not sure how to test the rectifier with it, help appreciated.

Am I right in assuming if the bike starts OK this means that the stator/alternator is not the problem?

Thank you for your reply. Where can I get a copy of the service manual? Is it available online?

I've got a old 1999 Bultaco Sherco 2.5 not been used in a few years but the fan doesn't seem to cut in. I've tested the fan separately and know that that works, I've also bypassed the temperature sensor but still the fan doesn't work. Apart from the fan not working everything else seems fine, although a little difficult to start (it's a Sherco so expected) it runs fine. Any help appreciated. Ian.