Author Topic: 1973 CB350F RH crank case cover removal  (Read 762 times)

0 Members and 1 Guest are viewing this topic.

Offline Bradleycougar

  • Full Member
  • *
  • Posts: 13
1973 CB350F RH crank case cover removal
« on: November 19, 2021, 01:19:00 PM »
Doing pretty well as a newbie  on my setup in garage 24 year CB350F but ran into a question I thought I better ask before regretting something. I need to inspect clutch plates ( seen lots of how to videos) but none that show the removal of the RH crank case cover actually being removed.  My concern is the lifting shaft that sticks out the case.  After removing all of the pan head screws and removing the kick start lever...do I try to pull the lever on shaft out to the right or just pull the cover off.  Is anything in the lift rod assy going to fly off at me or worse will I bend or break anything by just pulling the cover off?  By the way any tricks to reinstalling  this lever/shaft?

Experiance is always appreciated and thank you,

Bradleycougar

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,243
  • Central Texas
Re: 1973 CB350F RH crank case cover removal
« Reply #1 on: November 19, 2021, 01:40:33 PM »
Hey Bradley...welcome to the forum.  Before pulling the cover, o you have a reason to check the clutch plates?  How many miles and is the bike a runner?  These clutches last a long time unless it has been abused.

On another note, if you are doing a restoration, consider starting a thread in the 'Project Shop' area so we can follow along.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline Flyin900

  • Expert
  • ****
  • Posts: 1,032
Re: 1973 CB350F RH crank case cover removal
« Reply #2 on: November 19, 2021, 05:03:56 PM »
Did you sort out the rear sprocket issue of a previous post?

That cover is held on by two dowels once the screws are removed and the old gasket and age can make it stick somewhat. Making a cardboard template with an outline of the cover and placing the screws in their respective spots helps reinstall them correctly, as they are different lengths.
The bigger issue, if your a newbie to working on these is the kick starter shaft will try to also come out with that cover removal. It isn't a big issue, as it can easily be put back into the correct spot, yet requires some knowledge of where the return spring mounts on two tab positions in the main case.
If you go ahead with this, as the clutch case comes away from the engine cases, push the kick starter shaft back into the case, as it will likely hang up on the oil seal and be drawn out as noted above.
If your going to remove the clutch plates to check them you will need a C clip set of pliers, as the hub is held on with a C Clip on that model of bike.
« Last Edit: November 19, 2021, 05:07:44 PM by Flyin900 »
Common sense.....isn't so common!

1966 CL77 - 305cc - Gentleman's Scrambler
1967 CL175K0 - Scrambler #802 engine
1972 CB350F - Candy Bacchus Olive - Super Sport
1973 CB350F - Flake Matador Red - Super Sport
1975 CB400F - Parakeet Yellow - Super Sport
1976 CB400F - Varnish Blue - Super Sport
1976 GL1000 - Goldwing Standard
1978 CB550K - Super Sport
1981 GL1100 - Goldwing Standard
1982 CM450A - Hondamatic
1982 CB900C - Custom
1983 CX650E - Eurosport
1983 CB1000C - Custom X 2 Bikes now - both restored
1983 CB1100F - Super Sport - Pristine example
1984 GL1200 - Goldwing Standard

Offline Bradleycougar

  • Full Member
  • *
  • Posts: 13
Re: 1973 CB350F RH crank case cover removal
« Reply #3 on: November 20, 2021, 02:16:04 PM »
Thanks Stev-o and Flyin900.
The bike has 29K miles on it and was last run in 1994... been in a garage all these years... the engine is not seized and the really good thing is the owner says that he removed the carbs 18 months ago and had them cleaned in one of those sonic machines and no gas has gone through them since the PO just reinstalled them.  He did tell me that he thought one of the intake to carb connectors may have a crack (I replaced all four of them).  The clutch cable is hard to pull, leads me to believe maybe some rust on the steel plates.
Flyin900 rear hub bolts, like you said there were several on Ebay asked about thread condition and got a little concerned about that. I bout a new die for 10mmX1.25 thread and they cleaned up good and got new nuts...think I am OK there now. Also thank you very much for the info about the kick starter shaft... that is the kind of information that is invaluable to me.  Thanks again, I love doing this and you guys really help with my confidence.

Bradleycougar 
« Last Edit: November 20, 2021, 06:36:42 PM by Bradleycougar »

Offline Flyin900

  • Expert
  • ****
  • Posts: 1,032
Re: 1973 CB350F RH crank case cover removal
« Reply #4 on: November 20, 2021, 02:33:18 PM »
If the bike has sat for a long time it could be the clutch plates are sticking from sitting. Once you get it running and run some fresh oil through, it may correct itself. If you want to take it apart download the service manual from this site, it will be invaluable to you for assisting in your work. Under the Technical documents section I think.
I am restoring a 1972 CB350F currently and have done a number of these small motors in the past.

Common sense.....isn't so common!

1966 CL77 - 305cc - Gentleman's Scrambler
1967 CL175K0 - Scrambler #802 engine
1972 CB350F - Candy Bacchus Olive - Super Sport
1973 CB350F - Flake Matador Red - Super Sport
1975 CB400F - Parakeet Yellow - Super Sport
1976 CB400F - Varnish Blue - Super Sport
1976 GL1000 - Goldwing Standard
1978 CB550K - Super Sport
1981 GL1100 - Goldwing Standard
1982 CM450A - Hondamatic
1982 CB900C - Custom
1983 CX650E - Eurosport
1983 CB1000C - Custom X 2 Bikes now - both restored
1983 CB1100F - Super Sport - Pristine example
1984 GL1200 - Goldwing Standard

Offline Bodi

  • Really Old Timer ...
  • *******
  • Posts: 5,764
Re: 1973 CB350F RH crank case cover removal
« Reply #5 on: November 20, 2021, 04:30:22 PM »
The clutch lifter arm and mechanism is entirely in the cover so take off the cable and that's it. You can leave the cable on and remove the cover, I think, but the cover will be in the way hanging from the cable.

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 35,243
  • Central Texas
Re: 1973 CB350F RH crank case cover removal
« Reply #6 on: November 22, 2021, 09:30:29 AM »

The bike has 29K miles on it and was last run in 1994...

Personally, I would change the cable on a bike that has not run for 27 years.
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline jonda500

  • I may be crazy but I'm not stupid!
  • Master
  • *****
  • Posts: 1,950
  • With our thoughts we make the world (Monkey Magic)
Re: 1973 CB350F RH crank case cover removal
« Reply #7 on: November 23, 2021, 05:21:36 PM »
operating the clutch release lever can help the cover release from the two dowels
-not sure about the 350, but the 500 has a washer on the kickstart shaft under the cover that tends to stick to the cover and easily gets lost...
John
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
http://forums.sohc4.net/index.php/topic,122084.0.html
1972 CB500K1 original 4 owner bike
1972 CB500K1 returned to complete/original condition
1975 CB550F built from parts - project thread:
http://forums.sohc4.net/index.php/topic,149161.msg1711626.html#msg1711626
197? CB500/550 constructing from left over parts
1998 KTM 380 (two stroke) recent impulse buy, mmmm...