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Thanks guys

Hi. Please help. I have a 1980 CB750 Custom that runs beautifully and smoothly. But when it idles below 900 rpm, the motor sounds like a bag of bolts. If I set the idle to 1300 rpm the sounds go away. I was told by an 'old school' mechanic that this is pretty normal. Any thoughts please.

No problem. Thanks

Thank you. I'll consult the manual.

Hi All. You know... I joined this group some time ago when I acquired a CB750, believing we could share stories and experiences along the way. I never for one second, thought that I'd be told to 'to get a manual'. Quite disappointing.

I totally agree re the manual, and do actually have. My query is regarding lubricants.... that have progressed massively since 1980, when the manual was written.

Thanks very much. Please, how do I adjust the clutch at the clutch cover. I can also feel when changing gears, that the clutch is not engaging fully. Thank you.

Yip... Cos the mechanic told her.;)

Think I'm rather going to check clutch adjustment. Anyone know the correct procedure for using the adjuster on the clutch cover? Please.

The mechanic said must use 10w40 or 20w50... for petrol engine.

Thanks. That is exactly what I used. 15w40 diesel engine oil. (Leftovers from servicing my Fortuner). Actually just spoke to our local 'old bike' mechanic, and he said very strongly, that I should change it immediately!!. Back to square one. LOL...

Hi all. Looking for advice please. I'm a new owner of a 1980 CB750. I noticed that since servicing the bike, my clutch dosen't seem to work as it did before. Could always shift to neutral, but now have to first switch off the engine. I used 15w40 oil that I had. Was this a mistake? I have...

Thanks very much

Thanks for the reply. I need to replace the brake shoes, but they are not easily available where I live. They can be re-lined by a brake shop. I'm just not sure what thickness to tell them to line them.

Hi All, I need to have my rear brake shoes re-lined. (1980 CB 750 Custom). What would the correct thickness of the material be? Thanks

Thanks. Where would I find the safety switch?

Yes please. Thank you.

Thanks Bahnst. Any idea where, and number locally please. My actual reservoir is broken and taped up.

Good Day All, Please help. Iam looking for a front brake fuid reservoir for a 1980 CB750 Custom. (single front disc). Not sure which others fit. I am from South Africa. Many Thanks.

Thank you.

Morning All, and Happy New Year. Please could I get help with worst possible problem (for me anyhow). I can ride my 1980 750 Custom sometimes, and everything is good. Battery spins the starter like crazy, and bike starts. Other times the battery is basically completely dead, and I have to push...

Thanks. I see the dash also differs slightly.

Hi All. Thanks for all the help onthe group. I do have one thing that's bothering me. What is the difference, or differences, between a 1980 CB 750 K, and a 1980 CB750 Custom? The only thing I can see, is the shape of the indicators.

Yip.. As much as I didn't want to... I have accepted that. Thanks for the reply.

Thanks I'll check. But could that cause fuel to run out the back of the carbs. Surely it would just drain straight through? Thanks for the help.

Sorry all. Addendum to my previous post. The carbs start flowing before I crank the engine. Please any help would be greatly appreciated.

Hi all, please help. I took delivery today of a 1980 CB750 Custom. The bike looks good, but I have one big problem. I open the fuel valve on the tank and everything is fine. As soon as I start cranking, the fuel literally pours out the back of all four carbs. I managed to remove all the bowls...

Thanks. Yes definitely would like to 'customize' my cluster to include oil, temp and amps. Somehow with keeping the bike original. Probably would make it easily reversible. Any suggestions?

Thanks