Author Topic: 1974 cb550 ssm location and image?  (Read 8342 times)

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Offline BobbyRc51

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1974 cb550 ssm location and image?
« on: July 03, 2011, 10:03:14 PM »
Does anyone know where the ssm is located or what it looks like?

Thanks,
BobbyRc51

Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #1 on: July 04, 2011, 04:46:38 AM »
whats an ssm?
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

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Offline johnrdupree

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Re: 1974 cb550 ssm location and image?
« Reply #2 on: July 04, 2011, 09:01:12 AM »
If you're referring to the starter motor safety unit, it is under the left side cover directly above the fuse box:



I have a '75, but yours should be in the same spot.

Good luck,
~john
1975 Honda CB550K1
1991 Honda ST1100
1989 Suzuki GS500E
1954 NSU Lambretta 125 (long term project)

Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #3 on: July 04, 2011, 11:29:51 AM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline Motoguy23

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Re: 1974 cb550 ssm location and image?
« Reply #4 on: July 04, 2011, 12:21:04 PM »
Just throw away the whole starter and use the kicker.  8)
All glory to the hypno-toad.

Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #5 on: July 04, 2011, 12:28:40 PM »
Just throw away the whole starter and use the kicker.  8)

i was thinking about that too but what do you put over the hole after you pull the charger out?

^sorry about thread jacking this
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline dave500

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Re: 1974 cb550 ssm location and image?
« Reply #6 on: July 04, 2011, 01:02:51 PM »
a freeze plug can be used to fill the starter hole.

Offline BobbyRc51

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Re: 1974 cb550 ssm location and image?
« Reply #7 on: July 06, 2011, 03:27:29 PM »
Oh no wonder I can't find it.  Both of those items aren't there.  They were removed by the previous owner.  I connected all possible wires and still the starter button doesn't work, but if I pull in the clutch it does start up with out kicking.  What can I do so that I can use the button and stay as original as possible?
Thanks,
BobbyRc51

Offline BobbyRc51

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Re: 1974 cb550 ssm location and image?
« Reply #8 on: July 06, 2011, 03:28:47 PM »
What is the componet below that? I don't have that either.
Thanks,
BobbyRc51

Offline WarwickE36

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Re: 1974 cb550 ssm location and image?
« Reply #9 on: July 06, 2011, 03:32:31 PM »
Thats the fuse box, his has a cover, most don't... I hope you have a fuse panel, lol

On a side note, the SSM is not "useless" dont throw it in the trash.  There are ways to use Diodes to replicate a similar safety unit, but Honda made this piece to keep you from engaging the starter unless in neutral or the clutch is pulled in.  Way I see it thats a good thing. 

I kick my bike sometimes because well, its fun.  Sometimes I use the starter, its easy. 
« Last Edit: July 06, 2011, 03:34:46 PM by WarwickE36 »
" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

Offline sixthwisconsin

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Re: 1974 cb550 ssm location and image?
« Reply #10 on: July 06, 2011, 03:39:44 PM »
I love my starter motor...
I guess I'm not a purest but I can live with that!

Offline TwoTired

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Re: 1974 cb550 ssm location and image?
« Reply #11 on: July 06, 2011, 03:50:14 PM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
I gotta disagree.
The early Cb500s didn't have that.  If you left it in gear on the side stand, a bump of the start button would make the bike lurch forward and fall on its side.  Or if you were on it, thinking it was in neutral, the start button would launch YOU forward along with the bike.  If you weren't ready for that, you become part of the plow, as it may well start the engine and then it produces power.

When the SSM is working as it should, the start button only engages the starter if the clutch is pulled in or the trans is in neutral.  So, the bike can't lurch forward unexpectedly with a nudge of the start button.

Later models used a different technique to achieve the same safety function.

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline psycherhexic

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Re: 1974 cb550 ssm location and image?
« Reply #12 on: July 06, 2011, 05:22:11 PM »
anybody weight the  ENTIRE push button starter setup?

I mean is really going to drop that much?

 

Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #13 on: July 07, 2011, 02:28:40 AM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
I gotta disagree.
The early Cb500s didn't have that.  If you left it in gear on the side stand, a bump of the start button would make the bike lurch forward and fall on its side.  Or if you were on it, thinking it was in neutral, the start button would launch YOU forward along with the bike.  If you weren't ready for that, you become part of the plow, as it may well start the engine and then it produces power.

When the SSM is working as it should, the start button only engages the starter if the clutch is pulled in or the trans is in neutral.  So, the bike can't lurch forward unexpectedly with a nudge of the start button.

Later models used a different technique to achieve the same safety function.

Cheers,

wait hold on......

i have a 1975 cb550 and my wire harness was trashed.

so i got a 1976 cb550 wire harness and it didnt have any leads for the SSM. instead it had a little heat sink thing in place of the SSM

so what safety thing was put into place on the 1976 cb550?

i also looked at the wiring diagram; red-yellow and green-yellow are the only important wires going to the SSM

the others Black=ground, and any other wire goes to a light bulbs....

is there an updated cb550 wire diagram without the SSM in it?
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline dave500

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Re: 1974 cb550 ssm location and image?
« Reply #14 on: July 07, 2011, 02:46:06 AM »
check for neutral every time you start(as you should!),or just pull the clutch anyway.

Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #15 on: July 07, 2011, 03:00:03 AM »
arnt you supposed to be in neutral to begin with?

you roll up put it in neutral and shut off the engine....

thats what i do in my car. cars in neutral turn off car pull up E brake

do people stop while in gear holding the clutch and turn there bikes off?

you should always check but just saying
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline WarwickE36

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Re: 1974 cb550 ssm location and image?
« Reply #16 on: July 07, 2011, 04:37:11 AM »
I leave my car in gear every time I stop.  If I'm on a hill especially I will leave it in 1st, otherwise usually reverse.

I practice this same technique with my bike... I try not to park on a hill if at all possible, obviously never park facing downhill.  When on a hill I leave the bike in gear so its less apt to roll off the side stand.
" Why does anyone get offended by what someone does to their own bike? I dont get it. "

You made me think about it after I cheered knowing someone else would like to know what these control freaks are up to.
 Every time any owner strips whatever precious Honda part the horrified purists parts go up in value. That's not the part that bothers them.
 What bothers them is they sat up late at night, their breast full of wonder and estrogen, unable to sleep, dreaming about their lovely darling and all her glory... and next thing you know someone else doesn't share their emotional deluge and their reaction is they must spread their mind museum as far as they possibly can, taking over as much of the real world as possible.

Drink fast, drive slow, but ride it like you stole it

1974 Cb550 with style
2004 SV650s

Offline c(b)hris

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Re: 1974 cb550 ssm location and image?
« Reply #17 on: July 07, 2011, 04:39:11 AM »
arnt you supposed to be in neutral to begin with?

you roll up put it in neutral and shut off the engine....

thats what i do in my car. cars in neutral turn off car pull up E brake

do people stop while in gear holding the clutch and turn there bikes off?

you should always check but just saying

park on hill = park in gear
i always make sure mine rolls a little before i start it
75 CB550
74 CB750

Offline TwoTired

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Re: 1974 cb550 ssm location and image?
« Reply #18 on: July 07, 2011, 09:46:09 AM »
arnt you supposed to be in neutral to begin with?

For routine, yes.
Not all motorcycle operation/handling is routine.  The safety unit (or the later diode) helps to suppress the inner idiot's exposure to the universe.
Let's say there is a heavy traffic and the light turns green, you are in gear and let the clutch out too fast for the throttle applied, engine dies.  Do you first find neutral before hitting the starter button (you must if kick start only).  No, you just pull in the clutch and hit the starter button, then zoom away.  But, if 10 cars are honking at you holding up traffic and your routine is to always start in neutral withe the clutch engaged, now you have the lurch forward, which you may be able to control, or not, since the routine of operation no longer applies.  It isn't the normal state that you were "supposed to be in neutral to begin with".
The SSM performs a similar role to air bags.  Don't need them until you do.


The 76 CB550 K2 changed the operating scheme of the solenoid.  The SSM blocks power getting to the solenoid unless neutral or clutch disengaged signals are present.  This scheme has the starter button supplying GND to the other solenoid post.  Solenoid won't activate unless proper conditions are met.
The K2 and later has the single Diode scheme. This has the starter button supplying power to the solenoid (when pressed), and the neutral or clutch lever supplies the gnd path to the other solenoid connection.  The diode simply keeps the neutral light from lighting up whenever the clutch is pulled in.

Cheers,
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline scottly

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Re: 1974 cb550 ssm location and image?
« Reply #19 on: July 07, 2011, 11:33:13 AM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
NEVER throw any good parts away! It might be worth something to someone else someday.
Don't fix it if it ain't broke!
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Offline xsmooth69x

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Re: 1974 cb550 ssm location and image?
« Reply #20 on: July 07, 2011, 12:40:42 PM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
NEVER throw any good parts away! It might be worth something to someone else someday.

ok i didnt actually throw it away its in a box  :P
1975 CB550 (FINISHED?!?!?)
first motorcycle ever!!! ow and i dont know how to ride it either :D

raw rust rice venti quad shot cafe racing latte project aka my build..... http://forums.sohc4.net/index.php?topic=88853.0

black and white equation godzilla chalkboard 
1972 cb750 - next in line for some <3

Offline lucky

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Re: 1974 cb550 ssm location and image?
« Reply #21 on: September 02, 2011, 04:39:34 PM »
ow that thing i have that too on my 75 cb550 i threw mine away its worthless
I gotta disagree.
The early Cb500s didn't have that.  If you left it in gear on the side stand, a bump of the start button would make the bike lurch forward and fall on its side.  Or if you were on it, thinking it was in neutral, the start button would launch YOU forward along with the bike.  If you weren't ready for that, you become part of the plow, as it may well start the engine and then it produces power.

When the SSM is working as it should, the start button only engages the starter if the clutch is pulled in or the trans is in neutral.  So, the bike can't lurch forward unexpectedly with a nudge of the start button.

Later models used a different technique to achieve the same safety function.

Cheers,

Many bikes during that time did not have the starter safety switch.
You just had to make sure it was in neutral before starting the bike. Thats all.
Many good reasons to do that.

To just reach over turn the key and hit the start button WITHOUT making sure it is in neutral is stupid. You would not turn start your car without making sure it is out of gear would you?

The main reason they put in that safety switch was so if the motorcycle was at a stop light and the engine dies that you could just pull in the clutch and hit the start button even if it was in gear.

Some day there will be so many safety devices that there may just be a message on the dash that says you cannot drive the car and it will list all the reasons. Drunk, Mad, high blood pressure, you did not take your medicine, Your license has expired, kids not buckled, too much yelling inside the car, DVD movie running, you name it.

Offline TwoTired

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Re: 1974 cb550 ssm location and image?
« Reply #22 on: September 02, 2011, 06:20:16 PM »
To just reach over turn the key and hit the start button WITHOUT making sure it is in neutral is stupid. You would not turn start your car without making sure it is out of gear would you?
There are a lot of devices on modern cars that allow stupid people to survive being stupid and avoid damage to vehicles.  Starter interlocks are pretty common on cars.  Getting them to start often requires brake application, and certain other conditions before the stater will engage.

Personally, I think it is stupid to remove a safety device, particularly when it doesn't hurt anything and provides benefit, just because you think you are smarter/superior than everyone else on the planet.   Further, it could be argued that it is irresponsible to recommend someone else remove a safety device, without you also assuming some of the responsibility for any damage or injury incurred by following your errant recommendation.

It is easy to lose track of gear engagement details when working on the bike.  Need to bump the crank a bit to make a valve or timing adjustment?  Just bump the starter button.  Without the safety device, you could wind up the the bike on its side, or fallen off the motorcycle lift.  If you think that device is worthless to you, I wish you good luck.  People, even you, are fallible.
Telling everyone that is worthless to all, is arrogant and stupid, and almost certainly borne of ignorance, imo.

If you are arguing that the modern vehicle "smart" devices are producing a generation of less competent drivers, then I agree.  However, at the same time, statistics show that personal injury involving vehicles is lower per capita than it was in the 70's.  I don't for a moment think it is because the majority of divers today are more competent, and/or have a better rapport with their machines.
Still, I'm not going to advocate disabling the anti lock brakes, traction assist, and air bags on my wife's car.  Such things may help her survive in a collision even if she made no error in her own driver ability.

The main reason they put in that safety switch was so if the motorcycle was at a stop light and the engine dies that you could just pull in the clutch and hit the start button even if it was in gear.
You may wish to rethink that argument, as you can do that with or without the SSM, only with the SSM you don't need to have a concern about the bike lurching during the panic.
Really, if you are stopped and in gear, the engine is going to die UNLESS the clutch is pulled in.  ???
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Kenzo

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1976 cb550 ssm location
« Reply #23 on: November 26, 2015, 01:25:06 PM »
arnt you supposed to be in neutral to begin with?

For routine, yes.
Not all motorcycle operation/handling is routine.  The safety unit (or the later diode) helps to suppress the inner idiot's exposure to the universe.
Let's say there is a heavy traffic and the light turns green, you are in gear and let the clutch out too fast for the throttle applied, engine dies.  Do you first find neutral before hitting the starter button (you must if kick start only).  No, you just pull in the clutch and hit the starter button, then zoom away.  But, if 10 cars are honking at you holding up traffic and your routine is to always start in neutral withe the clutch engaged, now you have the lurch forward, which you may be able to control, or not, since the routine of operation no longer applies.  It isn't the normal state that you were "supposed to be in neutral to begin with".
The SSM performs a similar role to air bags.  Don't need them until you do.


The 76 CB550 K2 changed the operating scheme of the solenoid.  The SSM blocks power getting to the solenoid unless neutral or clutch disengaged signals are present.  This scheme has the starter button supplying GND to the other solenoid post.  Solenoid won't activate unless proper conditions are met.
The K2 and later has the single Diode scheme. This has the starter button supplying power to the solenoid (when pressed), and the neutral or clutch lever supplies the gnd path to the other solenoid connection.  The diode simply keeps the neutral light from lighting up whenever the clutch is pulled in.


Cheers,

There is the info I've been searching for in BOLD! The 1976 does not have a SSM unit rather diode starter safety.  ;D

Cheers,
Kenzo
H-Town, Tejas
>1976 CB550F SuperSport (Work In Progress)
MotoGP Werks Exhaust, Uni Pods
>2006 KTM EXC 453 (EXC 400 w/ Short Stroke Big Bore Kit)

Offline jonda500

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Re: 1974 cb550 ssm location and image?
« Reply #24 on: November 26, 2015, 05:32:23 PM »
I have a '75 550F with a '78 550K electrical system. It has never started in gear as the clutch switch is missing - I found out why! I connected the green/red wire in the headlight to a green earth (this is what the clutch switch does) and got it to start in gear but the neutral light stayed on all the time. I pulled out the little two spade ssm diode and now she starts in any gear and the neutral light works correctly again.
I tested the diode and found it to be cactus- it allows current to pass through in either direction! This is why the neutral light was staying on and probably why a PO removed the clutch switch!!

I have no intention of ever selling this bike, so it will never be a safety issue because no-one but me will ever ride it and because my two 500's do not have the SSM (nor did my 400-4's) so I am fully aware that the rear wheel will turn if I press the start button with the bike in gear and the clutch engaged.
John 
Remember that an ignoramus is only someone who doesn't know something you just learned yesterday!

A starter clutch thread:
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1972 CB500K1 returned to complete/original condition
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197? CB500/550 constructing from left over parts
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