Honda-SOHC
SOHC.co.uk Forums => CB750 => Topic started by: DaveB on April 02, 2017, 11:18:07 PM
-
I'm still finding out much about the CB750K6 I've purchased and I'm sure I will be for some time, but I am currently confused by the indicators and another anomaly.
The bike is I understand a K6 (manufactured in Dec 75) for the US market.
First the indicators. Having a good look around the forks and headlamp area I came across what I now understand is a warning buzzer for the indicators. However, I can find no way to make it sound. Assuming for now it's not faulty or there's a wiring problem, the user manual (downloaded PDF for a 76 CB750) makes reference to a range of movement beyond the normal switch position in which the buzzer will be activated.
[attachimg=1]
However, the switch on my bike doesn't have this additional movement. It switches left right or middle with no other positions available.
I'm just curious if this could mean anything about the age of the bike or if it's had a new switch unit from the wrong year fitted?
Second point is the throttle switch unit which is fitted with a screw to tighten the throttle grip (it seems). Yet, I can't find mention of this in the user guide. Does this also point to replacement switches or something to do with years?
Sorry for the questions, I'd just like to understand my bike and all it's foibles.
Thanks,
-
I cant see how you will have a separate switch position for buzzer function.
buzzer should work from main indicator switch to flasher relay..proabley more than likely etc..
good luck :)
-
If you never ask a question, you will never find the answer.
The buzzer should work automatically when you operate the indicator switch but, many people find them a pain in the arse and disconnect them. Or it doesn't work anymore.
I have a UK, K6 in original condition and when I have time later will put some pictures of the switches on this page.
-
These are UK, K6 switches but, a little different than the USA units.
-
Thanks guys. The left hand switch pod on mine looks identical to the UK one. The right is different in that I can't turn the headlight off. I can't see from from the photo if the there is a throttle tightening screw underneath?
Even the circuit diagram for the K6 (as well as K1 to K5) indicates (oops) there should be separate positions on the switch...
[attachimg=1]
L1/R1 are without buzzer and L2/R2 are with.
It just seems very odd that the diagram and user guide would refer to this second position when it doesn't physically exist on the switch.
[attachimg=2]
Regards,
-
Your right hand switchgear is for the American market where the headlamp is on permanently as long as the bike is switched on.
To test the buzzer, connect it directly across the battery. It comes on when the flashers are flashing but a lot of riders disconnected them as they attracted too much attention when stationary.
-
I seem to remember Bryan J mentioned a notice from Honda about disconnecting them on U.K. bikes for some safety reason.
-
Years ago I was told that indicator buzzers stopped being used as they sounded the same (or similar) as the buzzers at pelican crossings and blind people may mistakenly walk out into moving traffic.
-
It just seems very odd that the diagram and user guide would refer to this second position when it doesn't physically exist on the switch.
I think the position does exist on the switch but the wording may be a bit confusing.
This is the wording from the 400 handbook - it doesn't have the buzzer but I'm pretty sure the switch works the same way.
[attachimg=1]
-
All good info. Thank you. I will have a look and see if it's been disconnected. To be honest, I'm not sure I want one working for the reasons described above, but I was just curious about the matter having found it.
Chris400F. Thanks for that. The drawing does appear very similar so might well be what they meant.
Thank you all.
-
It's a cruise control. There's one on my K75
-
I've had the same issue with my indicators on the K5 USA.
I just replaced the relay with one like this and no more beeping.
http://www.ebay.co.uk/itm/FLASHER-RELAY-For-LED-INDICATOR-MOTORCYCLE-MOTORBIKE-BIKE-RESISTOR-2-PIN-12V-new-/151993812626?hash=item2363898692:g:WScAAOSweW5VcXUW
-
The U.S.A. k2 has a button on the left switch housing which when pushed cancels the buzzer.
-
I like my buzzer it sounds like a strangled cat and pisses my mates off when I pull up at the side of them. :)
-
I have attached a coloured wiring image from the Clymer manual (CB750 K6) which indicates..!..sorry...left,1 + left,2 & right,1 + right,2 (brown/blue=buzzer circuit)
The 1st position will operate the indicators, the 2nd position operates the indicators & buzzer. (I have a K4 and it's not fitted with this type of switch)
As previous post, the K2 (USA) version did have a lower push switch to omit the buzzer, and the throttle friction adjuster was discontinued after K4.
-
On my 750 i scrapped the buzzer its a us thing why do you need it you can see them working. When i had the headlight bracket off i ground the spot welds and took the buzzer off.
-
I have attached a coloured wiring image from the Clymer manual (CB750 K6) which indicates..!..sorry...left,1 + left,2 & right,1 + right,2 (brown/blue=buzzer circuit)
The 1st position will operate the indicators, the 2nd position operates the indicators & buzzer. (I have a K4 and it's not fitted with this type of switch)
As previous post, the K2 (USA) version did have a lower push switch to omit the buzzer, and the throttle friction adjuster was discontinued after K4.
Thanks, that supports the Honda circuit diagram in the K6 supplement. However, the positions on the actual switch remain elusive unless the first position is simply where the indicators start flashing and you have to hold it there, and the second position is when it clicks locked to the side?
Also, if the throttle friction adjuster was discontinued from the K5, I'm guessing that means the switch on my K6 has been replaced with an earlier one?
Thanks again.
-
the first position is simply where the indicators start flashing and you have to hold it there, and the second position is when it clicks locked to the side?
Hit the nail on the head.