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'73 CB750..looking for some help

Old 04-06-2010, 04:41 PM
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Default '73 CB750..looking for some help

Hello..just purchased a '73 CB 750..the bike has a bit over 10K miles on it. So far I have removed, cleaned, n reessemabled the carbs..purchased new boots from air box to carbs, replaced both throtle cables..the usual stuff. The bike starts and runs although a bit ruff...but I can handle that and plan to. The problem I am having is with the clutch, or clutch cable adjustment. When I purchased the bike it shifted into first gear no problem..when i got it home and tried to pull it into the seemed the clutch lever/cable wasn't working or had moved out of adjustment..meaning when I pull clutch lever and go to put the bike in gear I can hear the transmission gears grinding. I pulled out my Clymers manual and made the adjustment to the cable down on the clutch side and that worked..for a minute. I have been fiddling around with trying to adjust the cable with no luck what so ever. Sometimes after I have made the adjustments it works fine for a minute or two then reverts back to either not working at all for slightly working. I inspected the clutch lever and housing at the handle bar and it seems to be bent a bit but nothing that shouldn't be able to be compensated for for adjusting the cable. I am going to purchase a new cable and see what happens..but does anyone out there have any ideas..I realize it maybe be the actual clutch..but could an old cable be stretched to a point or the clutch lever so out of wack that it couldn't be adjusted to compensate ...PLEASE any help would be greatly appreciated. Thank you!
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Old 04-08-2010, 05:18 AM
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If I'm not mistaken, you might need to adjust the clutch at the clutch, not just the cable. Pull the clutch cover. There's an adjustment screw with a locking nut at the center. Loosen the nut and turn the screw clockwise until slight resistance is felt. Then back the screw off (counter clockwise) 1/4 turn. Then tighten the lock not, being careful not to change the position of the adjustment screw.

Then you can go back and adjust the cable play....big adjustments at the cable/clutch cover junction, minor adjustments at the clutch lever.

If you have a manual, the process is described there.

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Old 04-07-2011, 04:53 PM
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That makes good sense Less, especially after what has been described, a loose lock nut would do exactly what you are describing.
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