Only starts on center stand... - Ex-500.com - The home of the Kawasaki EX500 / Ninja 500R
 
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post #1 of 17 (permalink) Old 7-29-2014, 10:20 PM Thread Starter
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Only starts on center stand...

I recently bought an 87' EX500 with around 18k miles on it. It runs extremely well with the exception of the fact that some (most) times it will only start when up on the center stand. Power doesn't seem to be the issue (all lights come on when bike is off, signals work and are bright when bike is off, etc). What gives?

Perhaps some wire that is slightly loose that re-aligns on the center stand (or something like that?)

Help very much appreciated,
Christopher
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post #2 of 17 (permalink) Old 7-29-2014, 11:02 PM
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Re: Only starts on center stand...

There are sensors on the clutch lever and kickstand (side stand). You cannot start it, unless it is in neutral, on the side stand. You can also not start it, in gear, unless the clutch is pulled.

Make sure to set the choke when starting the bike from cold and then slowly remove choke as the engine comes to operating tempature.


type signature here...
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post #3 of 17 (permalink) Old 7-30-2014, 7:26 AM
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Re: Only starts on center stand...

Check your side stand switch, neutral switch, and clutch switches.

It will start as follows:
In neutral, on center stand, clutch lever not pulled.
In neutral, on side stand, clutch lever not pulled.
In gear, clutch pulled on either stand.

In gear, on side stand, let the clutch out it should immedeiately cut off.
On the center stand it should continue running.

If it fails any of the above, adjust clutch at both ends or begin replacing safety switches.
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post #4 of 17 (permalink) Old 7-30-2014, 12:48 PM Thread Starter
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Re: Only starts on center stand...

Got it. Clever bike for a child of the eighties. I'll mess around and see which it is--thanks a million!
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post #5 of 17 (permalink) Old 7-30-2014, 2:02 PM
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Re: Only starts on center stand...


NP
good luck... let us know.
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post #6 of 17 (permalink) Old 8-2-2014, 6:47 PM Thread Starter
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Re: Only starts on center stand...

It occurred to me I should take a different approach if it's practical...

How do I bypass this system altogether? I heard "sending a ground signal to the ignitor via a red/white wire" will cause it to start regardless. Would it be difficult to just connect the red/white wire to a ground on the bike and just have it fire up whenever?

Thanks!
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post #7 of 17 (permalink) Old 8-3-2014, 9:03 AM
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Re: Only starts on center stand...

While its possible to bypass it DON'T.

It will make you drop or wreck it.

You will leave the side stand down , someone will press the starter with no clutch and in gear, you will put the stand down and let the clutch out while trying to get off.

If it was a track bike I could understand but not a street bike
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post #8 of 17 (permalink) Old 8-3-2014, 11:07 PM
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Re: Only starts on center stand...

Yes, it is possible but NOT recommended.
All it takes is one time of forgetting to pick the side stand up and you're in for a bad day.

If you've ever seen it happen... where someone has forgotten, takes off and leans left.....
Or had side stand retention spring fail and the stand fall while riding... you'd understand.
Bad day indeed.
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post #9 of 17 (permalink) Old 8-5-2014, 10:19 PM Thread Starter
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Re: Only starts on center stand...

Welp, I don't want to say I fixed it--but I might have fixed it. Having considered the recommendations of the fine gentlemen of this forum I opted to instead wire the kickstand sensor to permanent "kickstand up" and the clutch sensor to permanent "clutch disengaged". I also cleaned out the start/killswitch assembly and connectors... so far she starts right up in all permutations, we shall see...

Now I'm going to start another thread about recommended maintenance for a used bike that one has just bought off craigslist. If the bike goes back to it's non-starting ways I'll be back!
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post #10 of 17 (permalink) Old 8-6-2014, 9:04 AM
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Re: Only starts on center stand...

No you did not fix it. You broke it.

Those safeties are there for a reason. Hook em back up and fix it right
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post #11 of 17 (permalink) Old 8-6-2014, 11:17 AM
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Re: Only starts on center stand...

a case of 2 wrongs vs 3 lefts.

Sounds like he made his decision fully aware of the consequences.
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post #12 of 17 (permalink) Old 8-6-2014, 2:07 PM Thread Starter
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Re: Only starts on center stand...

Three lefts with a safely stowed kickstand no less...

An unreliable kickstand safety is a poor substitute for S'FINEC. Safe habits trump gizmos any day of the week, always have, always will.
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post #13 of 17 (permalink) Old 8-6-2014, 2:50 PM
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Re: Only starts on center stand...

Stowing the sidestand is a good idea. My first restoration EX500 came from a guy who defeated the sidestand switch but left the sidestand on. One day he forgot it was still down, went into a left hand turn about about 20 mph, sold me what was left of the bike.
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post #14 of 17 (permalink) Old 8-6-2014, 6:56 PM
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Re: Only starts on center stand...

I don't mean to cut in, but if you could go to all the trouble to bypass the switch since you seem to know what you're doing, why not just wire it up to a warning light or to the left blinker indicator light in the cluster? It would be a good reminder and eliminate the problem at the same time, unless I'm missing something.

At the same time though, I'm a proponent of safety/ease and probably would've just changed the sidestand switch before going to all the trouble to bypass it in the first place.
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post #15 of 17 (permalink) Old 8-6-2014, 8:23 PM
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Re: Only starts on center stand...

Granted that good safety practices are a good thing but the safety switches are there for a reason.... the main reason being the lawyers. LOL

I grew up riding bikes that none of that stuff so I have a habit of sitting on the bike, lifting the stand, and pulling the clutch in before starting. That comes from years of riding kick start dirt bikes...
Not to mention not trusting the switches. But if a machine has them, I do prefer they are there and function properly.

As long as the OP is fully aware of the dangers and the responsibility of defeting and bypassing the safety switches... I hope he keeps that in mind and continues to remember that they are bypassed and rides safely.
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post #16 of 17 (permalink) Old 8-9-2014, 3:08 PM Thread Starter
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Re: Only starts on center stand...

Alright fellas. It's still acting up

Only starts on center stand cold. Starts on side stand warm.
When cold on side stand all lights come on but it just looks at me when I hit the start switch. No clicks or turning over or anything. Put up on center stand and it fires right up.

What it is not.
1. Kickstand safety (bypassed)
2. Clutch safety (bypassed)
3. Start/kill switch assembly (cleaned and tested)

So far as I know the center stand does not have a sensor so I'm thinking maybe the position of the bike up on the stand makes some sort of connection. Although that would not explain why it starts on the kickstand when warm.

Help greatly appreciated I have no idea what it could be!
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post #17 of 17 (permalink) Old 5-26-2019, 3:28 PM
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Even with a sidestand working it can stop working and you wont know about that. I mean it wont send you sms Hey I got broken...so I decided to write a 2 notices , near my key and inside visor with a SIDESTAND! So I will always look up for it.
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