Search found 5323 matches

by Volker_P
Thu Aug 16, 2018 3:46 am
Forum: Technical Discussion
Topic: Can you swap a 96' CB750 motor in an 82' cb650sc
Replies: 4
Views: 175

Re: Can you swap a 96' CB750 motor in an 82' cb650sc

Good idea.
Now someone at the Harley shop lost a bet. :wink:
by Volker_P
Thu Aug 16, 2018 3:42 am
Forum: Technical Discussion
Topic: 1981 cb650c carb cleaning and other issues
Replies: 1
Views: 128

Re: 1981 cb650c carb cleaning and other issues

Welcome here! :D ... My other concern is that the engine is running lean because of this. I pulled a plug and it looked a little dry but not too bad. ... CB 650 plugs typically look a bit lean. A bit of white is still all right at least for highway riding. The idle system won't really affect mixture...
by Volker_P
Thu Aug 16, 2018 3:35 am
Forum: Technical Discussion
Topic: CB650SC Exhaust pulses Q?
Replies: 4
Views: 180

Re: CB650SC Exhaust pulses Q?

What would be the result if I were to go from the stock position with 1.25” mandrel bent steel, and joined 1,3 on the right, starting with factory headers, then having 3 cross over and join 1, then having 2,4 join up on the left with pipe 2 crossing over and dipping under pipe 3, keeping 2,3 separa...
by Volker_P
Thu Aug 16, 2018 3:26 am
Forum: General Discussion
Topic: So much info
Replies: 2
Views: 124

Re: So much info

Volker-P I followed the link on your post to a manual. It looks great but I can’t get pop-ups and redirects to stop. Is there an account I need to sign up for to get access? There is no registration or something for the cosky online manual. All you need is a reasonable browser with reasonable setti...
by Volker_P
Tue Aug 14, 2018 2:21 am
Forum: Technical Discussion
Topic: Dont know where to begin
Replies: 2
Views: 86

Re: Dont know where to begin

Welcome here! :D I would recommend to read around in the forum a bit to get an idea what you got there. Then read the repair manual as you would read a book to get a bit common with the things in your boxes. Then have a closer look into your boxes and try to recognize the parts you did see in the ma...
by Volker_P
Tue Aug 14, 2018 2:05 am
Forum: Technical Discussion
Topic: Can you swap a 96' CB750 motor in an 82' cb650sc
Replies: 4
Views: 175

Re: Can you swap a 96' CB750 motor in an 82' cb650sc

Mechanic went back into bike to tighten engine block bolts to stop a leak. If you want to have a tight engine, you have to clean surfaces carefully before reinstall and follow the stepwise torque schemes with a small enough torque bolt. Try tightening bolts at a CB650 head cover or head to stop a l...
by Volker_P
Tue Jul 31, 2018 3:27 am
Forum: Technical Discussion
Topic: Starting issues an air box
Replies: 4
Views: 170

Re: Starting issues an air box

Welcome here! :D It should start and run somehow on 3, even on 2 cylinders. Plug cables from left coil go to 1+4 from right coil to 2+3. :wink: Do you have fuel in your floater bowls? You may check by opening the release screws. If your carbs have the vacuum shutoff (a part with several hoses sittin...
by Volker_P
Tue Jul 31, 2018 3:19 am
Forum: Technical Discussion
Topic: New '82 Nighthawk 650 owner, having a few problems.
Replies: 5
Views: 173

Re: New '82 Nighthawk 650 owner, having a few problems.

Welcome here! :D How do your plugs look like? All four equal? Still the plugs you got with the bike? When you replaced the old carb boots, did you also have a look inside the carbs? First thing for me to try for now would if throttle response gets better when the choke is pulled a bit. I would not t...
by Volker_P
Fri Jul 27, 2018 1:17 am
Forum: Technical Discussion
Topic: Hello from a new member. 1979 Cb650 with a couple of issues.
Replies: 9
Views: 275

Re: Hello from a new member. 1979 Cb650 with a couple of issues.

Thanks for the helpful pictures. Your plugs look good. 3+4 seem to have fired a bit, too, but never got hot. I would expect 3+4 look wet and black if they had fuel but no ignition or compression. Therefore my guess is a fuel/carb issue here. Forget about the idle jets and passages for now, they shou...
by Volker_P
Thu Jul 26, 2018 3:09 am
Forum: Technical Discussion
Topic: Hello from a new member. 1979 Cb650 with a couple of issues.
Replies: 9
Views: 275

Re: Hello from a new member. 1979 Cb650 with a couple of issues.

Welcome here! :D Interesting reunion story. To your problems: The plug cables from left coil go to cylinders 1+4, from right coil to 2+3. You would not be the first one who mixes them up :wink: Also try to swap plugs just to be sure. 1+2 are closest to the fuel inlet of the carbs, 3 is a bit further...
by Volker_P
Fri Jun 29, 2018 12:49 am
Forum: Technical Discussion
Topic: Starter clutch issues
Replies: 9
Views: 322

Re: Starter clutch issues

Got the pan off and I can turn the starter clutch by hand but it feels really tight. Not good. It should spin free in one direction, only slowed down a bit by the sprockets. Which means there should be a bit of very free play before the starter transmission sprocket teeth really engage. If there is...
by Volker_P
Thu Jun 28, 2018 1:09 am
Forum: Technical Discussion
Topic: Starter clutch issues
Replies: 9
Views: 322

Re: Starter clutch issues

Welcome here! :D In fact I never heard of that issue. Remove the starter and have a look into the hole in the crankcase. There should be teeth of a sprocket visible. Usually you can turn the sprocket with a screwdriver to one direction freely, but not to the opposite direction. The mechanical option...
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: 809

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: 865

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: 674

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 ...

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