Author Topic: CB400F carb removal Tip.  (Read 12870 times)

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Offline fasturd

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CB400F carb removal Tip.
« on: September 24, 2009, 09:32:04 am »
Hey guys I don't mean to steal credit for this. The tip was passed on to me by a fellow SOHC freak.
400 carbs are some times a pain to remove especially if you do not want to damage engine paint or air box bits.

The tip I got is all standard procedure except that we use a tie down strap to pull the air box back and give you a precious 1/2 inch clearance that makes ALL the difference in the world.

Loosen your intake clamps and push them up as close to the head as possible.
Loosen the air box clamps all the way.

LOOP the tie strap over the air box boots and back to the rear of the bike. pull the air box off the carbs and push it back. Now gently apply pressure with the strap and the box will stay put with a nice open gap.

Remove the air box clamps as you don't want to mangle them as you remove the carbs.
Remove all your vent hoses including the large breather hose.
Remove the throttle cables and pull the carbs out the right side of the bike.

Super slick and NO mangled bits or fingers!





Good luck.
13 in the garage and counting...

Link to my link...   http://forums.sohc4.net/index.php?topic=58422.0

Offline switchum

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Re: CB400F carb removal Tip.
« Reply #1 on: September 30, 2009, 12:19:46 pm »
 I wish I had known that a few weeks ago. My hands hurt...

Offline fasturd

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Re: CB400F carb removal Tip.
« Reply #2 on: October 01, 2009, 06:37:36 pm »
I know what you mean. I have done it many times before and I cursed EVERY TIME.

Then my buddy comes along...

Hopefully it will help on the next set you have to do!

13 in the garage and counting...

Link to my link...   http://forums.sohc4.net/index.php?topic=58422.0

B.Janke

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Re: CB400F carb removal Tip.
« Reply #3 on: February 14, 2012, 01:31:35 pm »
Bless You for posting this!   I have a ground up restoration and could not find a way to install the carbs without the possibility of scratching everything.  This worked perfectly.

Bill Janke

Offline 72_350_FOUR

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Re: CB400F carb removal Tip.
« Reply #4 on: July 12, 2012, 07:01:24 am »
Wow just came across this, thanks.  Hopefully it will give me some room on my 350f
1972 Honda CB350F

Offline sam059

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Re: CB400F carb removal Tip.
« Reply #5 on: July 15, 2012, 02:19:10 pm »
great tip, thanks. How did you get your engine so clean, very nice

Offline jas67

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Re: CB400F carb removal Tip.
« Reply #6 on: February 17, 2013, 09:24:08 am »
Awesome!   I'm going to go try this right now on my CB350F!
Classic Honda:
1976 CB400F
1975 CB400F (project)
1975 GL1000
1968 CL175 (1 nice one, one project)
1967 CB77
1967 CB160 (2 of 'em, both projects)
1967 CL160 project
Triumph: 2017 Thruxton R
BMW: 2016 R1200RS, 1975 R90S, 1973 R75/5, 1980 R100S
Ducati: 2013  Monster 796, 2013 848 Evo Corse SE track beast, 1974 750GT, 1970 Mk3d 450, 1966 Monza 250
Moto Morini: 1975 (titled 1976) 3 1/2 Strada, w/ Sport clipons.
Moto Guzzi: 2017 V7III Special,  1977 Le Mans, 1974 Eldorado

Offline strynboen

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    • http://forums.sohc4.net/index.php?PHPSESSID=4fu7cbpcj1p7q22urj79tolct0&/topic,60973.0.html
Re: CB400F carb removal Tip.
« Reply #7 on: February 17, 2013, 11:56:31 am »
use a heat gun make the rubber studs soft and flexy..it helps...to make it even easyer
i kan not speak english/but trying!!
http://forums.sohc4.net/index.php?topic=60973.0
http://forums.sohc4.net/index.php?topic=144758.0
i hate all this v-w.... vords

Offline Rudi91

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Re: CB400F carb removal Tip.
« Reply #8 on: March 12, 2013, 06:43:04 am »
Worked like a charm for my CB350F.
I've wrapped the strap around my carbs and my rear wheel after that around the air filter box and my rear wheel.
By wrapping it behind the rear tire I can just move the wheel around a bit to make it tighter or get it loose again.

Hope I made myself clear,

Thanks alot from The Netherlands!
CB350F '73

Offline 74CB400FFourSS

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  • 75 CB400F Super Sport
Re: CB400F carb removal Tip.
« Reply #9 on: May 07, 2013, 10:40:32 pm »
Cool tip thanks
Rob

1975 CB400F Four SS

Offline pyropupx36

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Re: CB400F carb removal Tip.
« Reply #10 on: August 09, 2016, 06:44:53 am »
 Hi - thank you - wonderful tip. I need to pull my carbs on my '73 350F after a badly botched sync'ing attempt and I don't want to disassemble any more than I have to. Just to clarify, it appears you don't have to loosen any screws back by the airbox/battery box area?  Just pulling the plastic plenum back with the strap is sufficient? Just want to make sure.

  Thanks for this great tip !!