pedro32

Thanks for your info guys I will check it out.

I have a XS750 that makes a horrible noise when operating the starter motor like it is slipping. I have put a kit in the starter clutch which comprises of rollers and springs. I have also replaced the gear that attaches to the clutch that the rollers make contact with because the old one had some grooving. I don't know what to do next. It turns over a few times and then slips while making this horrible noise. Any suggestions would be appreciated.

Thanks Slice I'll do that.

Thanx for your reply's. I found it was the indicator cancelling unit. Once I unplugged it everything behaved itself. Now I have a new question about the XS. Since I have owned it it has had K&N style pod air cleaners. I realise this isn't an ideal setup with this style carby but I don't have an air box to replace them. Does anyone know what size main jets would give me the best performance? I am having problems with it coughing and spluttering in the higher rev range whilst under load. If driven normally without giving it sh&@ it sounds and feels perfect. Thanks in advance

Hey Rory Do you still look at this site? I have your bike now! I'll send you some pics if you like and show you what I've done Cheers Pedro

Thanks Mate I have emailed Marcus from Rex"s Speedshop and he was quite helpful. I have ordered a second hand Ignition Module but I'm concerned that it will blow that one up too. Has anyone got any idea how the protection circuit works and how to test it? Below is a quote from an email from Marcus. Its unlikely that part is available so it would mean I'd have to spend time looking for equivalents. I would need to know all the numbers, from the un failed item, to see if there is something available. The other problem you might have is the protection circuit may have been damaged. When the transistor opens the circuit, the HT coil sends a 400 volt spike through the circuit. The transistor can't deal with this power surge, so there will be a circuit to protect it. Any help would be greatly appreciated.

I have a 1979 Yamaha XS750 which has no spark. I have narrowed it down to blown transitor in the Electronic Ignition Module. It is about as big as a 10 cent piece and has FTD32 printed on it. I cannot read the rest because it has blown a hole where the part number is. Does anyone know the part number for this? Could it be something else that has blown it up? I was thinking voltage regulator maybe. Any help would be greatly appreciated.