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Author Topic: Need help or where to start  (Read 1965 times)

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jlockwoo

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Need help or where to start
« on: July 29, 2006, 03:30:39 PM »
Heres the story.....go to work today and bike tips over in the parking lot onto the leftside. Nothing is bent or damaged. After I swear a couple of times, I ride it home (about 10 miles). Everything is fine on the ride home. Just went to take it for another ride and it won't shift out of first. The bike is a 1975 cb750f. Any ideas or things to check without opening the case. The clutch seems to work perfect.
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Offline jevfro

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Re: Need help or where to start
« Reply #1 on: July 29, 2006, 03:55:57 PM »
I'm sure more experianced owners will have more/better tips but you might see if shift lever is bent and also look to see if the shaft it connects to is straight...

Good luck!
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Offline 750goes

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Re: Need help or where to start
« Reply #2 on: July 29, 2006, 04:09:35 PM »
If you rode it home OK did you notice if it was harder to shift than normal ???

If it was operating normally then I think I would check a few things externally first.

Try and get the bike out of first gear, put it on the centrestand (if you have one) and rotate the rear wheel by hand in forward and or backward rotation and try and lift the shifter to Neutral..will it do this??

Is the shifter also pressed up against the  engine cover?

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jlockwoo

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Re: Need help or where to start
« Reply #3 on: July 29, 2006, 04:34:34 PM »
During the ride home it shifted just fine. I also pulled the clutch in and started the bike in first gear. After started I rode it up and down the street trying to get it to shift - no luck. Also the shifter is not against the cover. It exactly moves up and down the normal amount. Just nothing happens.
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Offline 750goes

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Re: Need help or where to start
« Reply #4 on: July 29, 2006, 10:10:38 PM »
I think that the gearbox is locked, possibly by the gear selector being bent somehow from the fall, or a spring has broken in behind your shifter cover.... not allowing the bike to be moved fom first gear..
take the shifter and cover off - not a big deal only a few screws... but do not break the gasket behind the cover... have a look for a spring that attaches to the shifter lever.. a photo of this area would be a great help, plus one of the cover/shifter before you start...

anyone else have any ideas??
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Offline bryanj

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Re: Need help or where to start
« Reply #5 on: July 30, 2006, 02:34:09 AM »
Just falling over cant bend anything inside the box. Its probably the light spring on the shifter mechanism under the caver the shifter shaft sticks out of and is pure coincidence.
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

jlockwoo

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Re: Need help or where to start
« Reply #6 on: July 30, 2006, 07:32:15 AM »
Thanks for all the help. I will at it later today after i have a impact screw driver (tried yesterday to take off cover). I will let you guys know and include photos. thanks again for the ideas.
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jlockwoo

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Re: Need help or where to start
« Reply #7 on: July 31, 2006, 03:33:06 PM »
Thanks, Today i took the cover off and found a spring sitting the the bottom. The spring found its way back into the proper location and everything is back to normal. My only question - is this the stock spring. It seems like it shouldn't fall that easy. pics are below.
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Offline Roach Carver

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Re: Need help or where to start
« Reply #8 on: July 31, 2006, 05:48:10 PM »
similar thing happened to one of my bikes.
 
Quote from: jlockwoo on July 31, 2006, 03:33:06 PM
Thanks, Today i took the cover off and found a spring sitting the the bottom. The spring found its way back into the proper location and everything is back to normal. My only question - is this the stock spring. It seems like it shouldn't fall that easy. pics are below.
looks like the correct spring to me.
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Offline ofreen

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Re: Need help or where to start
« Reply #9 on: July 31, 2006, 06:41:54 PM »
Quote from: jlockwoo on July 31, 2006, 03:33:06 PM
Thanks, Today i took the cover off and found a spring sitting the the bottom. The spring found its way back into the proper location and everything is back to normal. My only question - is this the stock spring. It seems like it shouldn't fall that easy. pics are below.

That is a fairly common occurrence anytime the shift lever takes a hit.
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Greg
'75 CB750F

"I would rather have questions I cannot answer than answers I cannot question." - Dr. Wei-Hock Soon

Offline 750goes

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Re: Need help or where to start
« Reply #10 on: August 01, 2006, 02:17:05 AM »
Glad for you that it was so simple and easy, also a great picture...

Was it that clean inside there when you took the cover off ?? looks nearly new... :D

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Offline cbjunkie

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Re: Need help or where to start
« Reply #11 on: August 01, 2006, 03:01:51 AM »
really? that's how mine looked...maybe your seal wasn't so good?
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Offline 750goes

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Re: Need help or where to start
« Reply #12 on: August 01, 2006, 03:12:59 AM »
junkie

I'll try and get a picture tomorrow, mine was/ probably still is as filthy as... anyway you will see tomorrow if I remember...

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Offline bryanj

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Re: Need help or where to start
« Reply #13 on: August 01, 2006, 03:21:25 AM »
Part number 24641-300-000, Probably cheap and worth changing
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Semi Geriatric ex-Honda mechanic and MOT tester (UK version of annual inspection). Garage full of "projects" mostly 500/4 from pre 73 (no road tax in UK).

Remember "Its always in the last place you look" COURSE IT IS YOU STOP LOOKIN THEN!

jlockwoo

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Re: Need help or where to start
« Reply #14 on: August 01, 2006, 07:32:32 AM »
That was with no cleaning. Overall the bike is pretty dirty. I bought it about a month ago and have been dealing with the mechanical stuff instead of the looks (other than its new army green paint job).
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Offline 750goes

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Re: Need help or where to start
« Reply #15 on: August 01, 2006, 02:29:23 PM »
I'll give you $5 for that POS left Sidecover... my offer ends soon...gimme gimme gimme...you pay postage too... :)
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