Author Topic: Removing CB350f Main Jet  (Read 1706 times)

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Offline karateisland

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Removing CB350f Main Jet
« on: July 16, 2012, 01:30:13 PM »
Admittedly, this may be somewhere on the forum already, but I can't seem to find it! If someone could point me in the right direction, I'd be eternally grateful.

Is there a trick to getting the main jet out on the cb350f? I can't seem to pull it.

I've read you can push it from the top, but when I remove the tops of carbs, the tops of the slide mechanism look to have special washers on it that are bent up around the nuts as if to keep them from turning. I'm wary of removing these but I'd like to get the main jet out so as to be certain it is both clean and the correct size. The idle jet was the correct size, but you can never tell with these things.

I managed to clean the main jet with a guitar string, but am not sure this is enough. Any ideas?

If it helps, I can take a picture of the slide mechanism bolts when I get home. I've tried to explain as clearly as possible, but I know how these things are.

72' CB350f (The Red Baron)

Offline flybox1

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Re: Removing CB350f Main Jet
« Reply #1 on: July 16, 2012, 01:44:41 PM »
Grab it with pliers and pull/twist it out. 
marring the outside will not hurt it  ;)
I would suggest replacing its oring as the one on there is probably hard and crushed.
pull out the emulsifier tubes while you're at it.  they are brass and hiding under the main jets.
get a little hook down in their hole, and pull them out.  clean them well.
« Last Edit: July 16, 2012, 01:49:02 PM by flybox1 »
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline karateisland

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Re: Removing CB350f Main Jet
« Reply #2 on: July 16, 2012, 02:11:00 PM »
Ahhhh, OK--was trying to yank it out but it wasn't coming. I guess I'll just lock some needle-nosed pliers on there and give 'em hell.

Thanks!
72' CB350f (The Red Baron)

Offline flybox1

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Re: Removing CB350f Main Jet
« Reply #3 on: July 16, 2012, 02:16:22 PM »
twist and pull, dont bend. 
you dont want to crack its seat. then you're eff'd.
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline fmctm1sw

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Re: Removing CB350f Main Jet
« Reply #4 on: July 16, 2012, 03:58:22 PM »
Grab it with pliers and pull/twist it out. 
marring the outside will not hurt it  ;)

Agreed.  But I would note the jet size before I grabbed and twisted.  Ask me how I know...    :o
Quote from: 754
Dude is that a tire ? or an O-ring..??

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This is not a pod thread
This is not a #$%* on my vacuum gauges thread
This is a help or GTFO thread.

1973 CB350F
1973 CB350G
1975 CB550K
1983 GL650I
1973 CB750K3 (http://forums.sohc4.net/index.php?topic=92888.0)
1984 Kawasaki KLT-250 (AKA 3 wheeler of death)
1994 Honda TRX300
1999 Honda TRX250

Offline karateisland

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Re: Removing CB350f Main Jet
« Reply #5 on: July 16, 2012, 07:08:04 PM »
Agreed.  But I would note the jet size before I grabbed and twisted.  Ask me how I know...    :o

I did this, but it only occurred to me after I finished the first three. I never thought I'd be thankful this little thing had so many damned carbs! :P

Also--damn those emulsion tubes were dirty. They were covered and filled with brown gunk. I would assume this makes starting the bike difficult!

Jets are 75s, which, as I understand, are stock. Was glad to see it. Thanks for the help! I'm always wary about putting too much force on things. Father always taught me that if you have to force it, you're probably doing it wrong. Apparently that doesn't hold true for these old Hondas.



« Last Edit: July 16, 2012, 07:36:22 PM by karateisland »
72' CB350f (The Red Baron)