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Kicks in then kicks out and you can hear it spin. I suspect a bad bendix. Can you replace just the bendix and are they available ?
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After a little reading I understand it's the starter clutch . Are these centrifugal?
It's seem to have got bad after I changed the oil to 20/50 Mobil one could thicker oil cause a problem?
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Administrator
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It is centrifugal, and does run in oil, so I guess it could.
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I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Administrator
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You might want to pull the cover, and see if the large gear is bolted securely to the rest of the crankshaft. My '79 CB used to slip its clutch once in a while, and when it was torn down, the securing bolts were loose. It was loose enough to have slipped the starter driving gear.
Hope this helps. As far as replacing just the bendix portion, I believe the starter is a direct drive, as in the gear is part of the shaft inside the starter. I don't believe the viscosity/weight of the oil would have much to do with starter operation, but I've been wrong before.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Administrator
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What kind of bike are we talking about here?A SOHC or DOHC?The reason i ask is the part about the starter clutch running in oil.I'm just trying to learn something here.
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It's dohc and if it runs in oil I could see how it might affect it. I have not opened it up yet just gathering info before I do
Sent from my iPhone On Oct 21, 2011, at 12:48 PM, "shinyribs [via Honda CB750'S]"< [hidden email]> wrote:
What kind of bike are we talking about here?A SOHC or DOHC?The reason i ask is the part about the starter clutch running in oil.I'm just trying to learn something here.
Montvale,Virginia
DUE TO RECENT ECONOMIC CONDITIONS, AND THE RISING COST OF ELECTRICITY, GAS AND OIL, THE LIGHT AT THE END OF THE TUNNEL HAS BEEN TURNED OFF.
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Thanks I will check it
Sent from my iPhone On Oct 21, 2011, at 11:11 AM, "LukeM [via Honda CB750'S]" < [hidden email]> wrote:
You might want to pull the cover, and see if the large gear is bolted securely to the rest of the crankshaft. My '79 CB used to slip its clutch once in a while, and when it was torn down, the securing bolts were loose. It was loose enough to have slipped the starter driving gear.
Hope this helps. As far as replacing just the bendix portion, I believe the starter is a direct drive, as in the gear is part of the shaft inside the starter. I don't believe the viscosity/weight of the oil would have much to do with starter operation, but I've been wrong before.
Luke M
Back on 2 wheels after a 30+ year break. Used to have a 1979 CB750L, sold it as a parts bike, now riding a 1984 VT700C. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Wow these are pretty simple machines. Starter clutch fixed it
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Administrator
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It's a testament to Honda engineering. It IS a simple machine, elegant design, and well manufactured and assembled.
Glad it's working now.
Luke M
Used to have a 1979 CB750L, sold it as a parts bike, now riding a slightly modified 1984 VT700C. Network/Field Engineer. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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Yes I admire it's simplicity!
Sent from my iPhone On Oct 25, 2011, at 6:07 PM, "LukeM [via Honda CB750'S]" < [hidden email]> wrote:
It's a testament to Honda engineering. It IS a simple machine, elegant design, and well manufactured and assembled.
Glad it's working now.
Luke M
Back on 2 wheels after a 30+ year break. Used to have a 1979 CB750L, sold it as a parts bike, now riding a 1984 VT700C. Central OH, USA, Earth, Sol System, Milky Way Galaxy, Universe.
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