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by Volker_P
Wed Mar 07, 2018 4:55 am
Forum: Technical Discussion
Topic: how to connect my battery charger alligator clips to battery without removing seat?
Replies: 4
Views: 484

Re: how to connect my battery charger alligator clips to battery without removing seat?

I remember I just had an additional cable lag mounted at the battery side of my starter solenoid. It was "somehow" :roll: accessible with alligator clips after removal of the side cover. This cable lag was strong enough to start the engine there, too, because in my case this was the reason...
by Volker_P
Wed Mar 07, 2018 2:43 am
Forum: Technical Discussion
Topic: Carb Cleaning -- success
Replies: 4
Views: 537

Re: Carb Cleaning -- success

Thanks for this nice report. :D
Well, and this:
michael_650 wrote: Open the windows, turn on the fans. This will stink. Not rancid, terrible, but my lovely bride was not happy...

should not be a problem any longer: https://simplegreen.com/products/all-pu ... -lavender/ :lol:
by Volker_P
Wed Feb 28, 2018 2:56 am
Forum: General Discussion
Topic: Stator replacement issues
Replies: 4
Views: 407

Re: Stator replacement issues

Right. The stator itself only needs the three yellow wires for operation. Black and white are to connect the regulator to the rotor brushes. These five cables share the same plug to the regulator, so probably that's why b&w they are there, too. I guess from this and the pictures you could still ...
by Volker_P
Wed Feb 28, 2018 2:02 am
Forum: Technical Discussion
Topic: question about fuel tank petcock and path to carburetors
Replies: 10
Views: 746

Re: question about fuel tank petcock and path to carburetors

juntjoo wrote:Any ideas before I take it apart again?

Pull the hose from the petcock, put on another hose there, then release some fuel into a jar. This way you get an idea how much fuel could go into your carbs.
by Volker_P
Tue Feb 27, 2018 5:50 am
Forum: Technical Discussion
Topic: question about fuel tank petcock and path to carburetors
Replies: 10
Views: 746

Re: question about fuel tank petcock and path to carburetors

Have a look at the right side of this picture (and better ignore everything on the left :lol: ) The free hose end directly plugged to the (here missing) petcock. This hose even made an upwards loop so the car fuel filter fitted in here. Worked fine and so should yours. The function of the "evil...
by Volker_P
Fri Feb 23, 2018 2:20 am
Forum: Technical Discussion
Topic: why would pipes #1 & 3 be cool?
Replies: 72
Views: 3819

Re: why would pipes #1 & 3 be cool?

Thank you guys for finding really nice words for me, sounds a bit like an obituary. Fortunately too early but thanks anyway. :D So I just like to say that I am all right and there is no reason to worry. I am completely off the motorcycle stuff since that crash and I do not look in here frequently an...
by Volker_P
Wed Sep 07, 2016 12:35 am
Forum: General Discussion
Topic: PLUG B, OIL PATH CB650 1979 (Z)
Replies: 3
Views: 2408

Re: PLUG B, OIL PATH CB650 1979 (Z)

Heat usually is a good idea but be careful there. Especially if there should be traces of "ground contact" at the bottom.
Possibly worth to consider if you really need to have it out.
by Volker_P
Tue Sep 06, 2016 1:24 am
Forum: Technical Discussion
Topic: Solution to Not running on 1 or 4 Cylinder + ticking sound
Replies: 1
Views: 1339

Re: Solution to Not running on 1 or 4 Cylinder + ticking sound

Yes, tricky issue.
Because everything looks fine as soon as you remove the cover to check out.
Good you found it before you tore everything apart. :)
by Volker_P
Fri Sep 02, 2016 1:03 am
Forum: Technical Discussion
Topic: 80s cb650 c tuning and potential rejeting?
Replies: 1
Views: 1414

Re: 80s cb650 c tuning and potential rejeting?

It runs and idles very quietly though it takes maybe 30 seconds and a rev or two for cylinder 1 to start firing and heat up noted by a slight backfire pop on cylinder one as the throttle is letting off. It also smokes less now. 30s until it runs at all four is all right. Do not worry. The only prob...
by Volker_P
Fri Sep 02, 2016 12:44 am
Forum: Technical Discussion
Topic: 1979 CB650 tail light
Replies: 6
Views: 2754

Re: 1979 CB650 tail light

Here is a question I have: If the brown wire associated with the tail light when the bike is running has power coming out of the ignition switch but a break at some later point, could I just splice that wire with the other brown wire? From my understanding of the the US model tail light circuit the...
by Volker_P
Thu Sep 01, 2016 1:01 am
Forum: Technical Discussion
Topic: 1979 CB650 tail light
Replies: 6
Views: 2754

Re: 1979 CB650 tail light

The brown cables are the power supply for the tail light. And e.g. for German bikes there is also a small 3Watts bulb in the headlight for the front parking light. This might explain no second cable comes out from your harness (US model assumed). Here are some hints how to get into the ignition swit...
by Volker_P
Fri Aug 26, 2016 12:39 am
Forum: Technical Discussion
Topic: Throttle butterflies dont retract?
Replies: 36
Views: 4208

Re: Throttle butterflies dont retract?

You are right, I mixed that up.
It has been three years now that my CB is gone and obviously I start to forget some things with time.
Or in other words: I'm getting old! :lol:
by Volker_P
Thu Aug 25, 2016 1:54 am
Forum: General Discussion
Topic: PLUG B, OIL PATH CB650 1979 (Z)
Replies: 3
Views: 2408

Re: PLUG B, OIL PATH CB650 1979 (Z)

I think you should get it out with a 12mm Allen key. You may make a tiny steel plate to shim a possible gap so you get it out safe without damage. It should come out easily, it is just a plug with an O-ring. At least I don't remember trouble there. I won't be surprised if it already would come out w...
by Volker_P
Thu Aug 25, 2016 1:47 am
Forum: General Discussion
Topic: Cylinder Head Temps
Replies: 8
Views: 3573

Re: Cylinder Head Temps

Despite the millions of online horror stories, I think my next move will be to switch to amsoil 10w-40 synthetic metric motorcycle oil. If you know your engine is clean inside (e.g. after you did a complete rebuild) no real problem. But synthetic oil may dissolve all the stuff from decades more or ...
by Volker_P
Thu Aug 25, 2016 1:23 am
Forum: Bikes
Topic: CB650 Custom
Replies: 3
Views: 2571

Re: CB650 Custom

Quite good shape for a daily use bike in the UK!
Interestingly this seems to be a US model. The European 1980 Custom had double disk front from the beginning on.
Stock rear sprocket. :)
Interesting exhaust, don't remember I ever saw this one.

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