Honda-SOHC

SOHC.co.uk Forums => CB350/400 => Topic started by: petermigreen on May 25, 2016, 05:58:43 PM

Title: 1975 USA CB400F
Post by: petermigreen on May 25, 2016, 05:58:43 PM

I collected the above today, and my first question is -
Do the US bikes run with lights on all the time as there doesn't seem to be a switch on the right switch gear to turn lights on and off like the UK/EU bikes. Also the front indicators seem to be on low with the low beam as well or is this a wiring glitch? I wouldn't be surprised as the loom has been hacked.

Thanks, Peter

Title: Re: 1975 USA CB400F
Post by: Chris400F on May 25, 2016, 06:15:03 PM

I had a quick look in the Parts List (available from Ashimoto's Dropbox, and very useful).
The right switch gear for US and Canadian bikes has a different P/N to all other variants.
Bulbs in front indicators are also shown as twin filament.
I suspect your wiring is correct for the bike, in this respect anyway!

Title: Re: 1975 USA CB400F
Post by: hairygit on May 25, 2016, 06:18:34 PM

Yes, u.s. models do have lights on all the time, but you can fit a U.K. model switchgear with on/off facility.The front indicators on u.s. models are dual filament bulbs, low wattage come on with low beam (apparently to show oncoming traffic that it's a bike, not a car with a dud headlight) these must be disconnected to pass an m.o.t. in U.K., and normal 21w filament for indicating. Enjoy!

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Title: Re: 1975 USA CB400F
Post by: petermigreen on May 25, 2016, 06:52:34 PM

Cool that makes sense thanks guys


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Title: Re: 1975 USA CB400F
Post by: petermigreen on May 26, 2016, 09:51:38 PM

Started dismantling the front end as the forks seals are completely shot and as I was taking the headlight off I noticed that the sealed unit seemed quite small in the head light bowl and is quite loose. Can anyone tell me if this looks correct?

[attach=1]

[attach=2]

[attach=3]

[attach=4]

[attach=5]

There seem to be to fixing screws at the 4 O'clock and 8 O'clock positions and an adjusting screw in the rim at 9 O'clock.

Thanks, Peter.

Title: Re: 1975 USA CB400F
Post by: Bodd on May 26, 2016, 10:30:34 PM

It does look a little small, there is no adjusting screw in the rim on mine.

Title: Re: 1975 USA CB400F
Post by: hairygit on May 26, 2016, 10:36:04 PM

You'll need to change it or tape up some of the glass to get through a U.K. m.o.t because the yanks drive on the wrong side of road, so it will dip to the wrong side here!

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Title: Re: 1975 USA CB400F
Post by: Chris400F on May 26, 2016, 10:41:50 PM

Or replace it:
http://www.ebay.co.uk/itm/Honda-CB400-Four-CB400F-400-4-original-Stanley-headlight-/391463702070?hash=item5b250e0e36:g:OQYAAOSwEOxXQahD