bike shuts off when put into first......help | GTAMotorcycle.com

bike shuts off when put into first......help

Rozmo123

Rozmo123

Member
Hey, i got a 97 ZX7

so here is my issue.

turns on, on neutral.

bike shuts off when on ground and put into first.
but if i put it on a stand it turns on and rear wheel keeps on spinning. If i pull clutch in it continues to spin it dosent stop.

If i lower the kickstand it shuts off.......

Clutch cable? can it be adjusted?
 
Side stand switch....

Ok wait...this may sound insulting, but I don't mean it to be insulting. Before you pop it into gear, do you put your side stand up?
 
Sounds like your clutch safety switch might be sticking?
 
Did you guys not read his original description of the issue???


It's not the side stand safety switch. (he makes that clear in the description).
It's clearly the clutch that is out of adjustment, and the bike stalls when he kicks it into first if the rear wheel is on the ground.


His english may not be perfect, but it's clear enough to read that it's the clutch that is not disengaging, stalling the engine.
 
I think he means the rear wheel turns when up on a rear stand.....just like every other bike. I'm going with the side stand switch.
 
Rozmo123 said:
Hey, i got a 97 ZX7

so here is my issue.

turns on, on neutral.

bike shuts off when on ground and put into first.
but if i put it on a stand it turns on and rear wheel keeps on spinning. If i pull clutch in it continues to spin it dosent stop.

If i lower the kickstand it shuts off.......

Clutch cable? can it be adjusted?
Click to expand...

Your bike doesn't have a clutch cable. It's hydraulic, but don't worry about it. That's not the issue.

I am 99% certain that it's your side stand switch. When functioning normally the bike will die if you put it into 1st gear while the side stand is down... or similarly if the bike is in gear and you put the side stand down it will die. Now, if the bike still dies when you click it into 1st even when the side stand is up that likely means your side stand switch is sticking. The switch is mounted to the frame right near the side stand pivot, there are two wires that run from it to the the main wiring harness. About 6" from the switch there are connectors where you can disconnect it from the main harness. To bypass the switch disconnect the two wires and connect the two wires on the main harness together. If the side stand switch was faulty the it should run fine with the switch bypassed.. but be careful as you'll be able to put the bike in gear with the side stand down.. don't ride away.

The wheel spinning is normal. When you pull in the clutch lever the clutch doesnt fully disengage. There is still friction passing through it so the rear wheel will turn. 99% of bikes do that, fret not.
 
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Yes it is normal for the kickstand to cut the motor, that's a safety feature.

This manual seems to show a hydraulic lever, which I have no experience with, Page 133.

If caboose hasn't covered it, Zip-tie the rear brake on while on the stand and see if the engine still cuts out going to first, then you will know if it is clutch related or no.
 
sounds like clutch is not disengaging when you are pulling the lever in...maybe cable broken or clutch faulty/sticking...can't help more than that...
 
im going to try bypassing the switch and see if that works. Although i have a feeling that is not the problem.

And yes its a hydraulic clutch, i neglected to mention that earlier.

Ill try to explain in better english :p

The bike turns on when in neutral.
With the kick stand up, bike on the ground, pulling in the clutch and put into first gear it turns off.

with kick stand up, bike on a rear stand,pulling in the clucth and put into first gear the rear wheel continuosly spin
- the bike will shut off if i bring the kick stand down while on the rear stand.
- the bike will continue to run if i pull the clutch in and kick stand is down, if i realease the clutch it turns off.

Only thing i have not tried mentioned on here i, pressing rear break and clutch.......
 
Rozmo123 said:
im going to try bypassing the switch and see if that works. Although i have a feeling that is not the problem.

And yes its a hydraulic clutch, i neglected to mention that earlier.

Ill try to explain in better english :p

The bike turns on when in neutral.
With the kick stand up, bike on the ground, pulling in the clutch and put into first gear it turns off.

with kick stand up, bike on a rear stand,pulling in the clucth and put into first gear the rear wheel continuosly spin
- the bike will shut off if i bring the kick stand down while on the rear stand.
- the bike will continue to run if i pull the clutch in and kick stand is down, if i realease the clutch it turns off.

Only thing i have not tried mentioned on here i, pressing rear break and clutch.......
Click to expand...

Bypass the side stand switch first. See what that does.
 
bleed the clutch master cylinder, probably got air in the system. If the rear wheel spins when you pop it in gear with the clutch pulled in, the hydraulic clutch isn't bled right.
 
AlienTech said:
seems obvious to me
Click to expand...
He's describing the normal operation of the side stand switch - this should clue you in that his side stand switch is 100% functional = hence, it's NOT the issue.

dricked said:
I think he means the rear wheel turns when up on a rear stand.....just like every other bike. I'm going with the side stand switch.
Click to expand...

Seriously? sure every bike will spin the rear wheel in first while on the stand - but the OP's bike STALLS THE ENGINE when then bike is on the ground.

THE CLUTCH IS NOT DISENGAGING - that is the probem.

caboose483 said:
Your bike doesn't have a clutch cable. It's hydraulic, but don't worry about it. That's not the issue.

I am 99% certain that it's your side stand switch. When functioning normally the bike will die if you put it into 1st gear while the side stand is down... or similarly if the bike is in gear and you put the side stand down it will die. Now, if the bike still dies when you click it into 1st even when the side stand is up that likely means your side stand switch is sticking. The switch is mounted to the frame right near the side stand pivot, there are two wires that run from it to the the main wiring harness. About 6" from the switch there are connectors where you can disconnect it from the main harness. To bypass the switch disconnect the two wires and connect the two wires on the main harness together. If the side stand switch was faulty the it should run fine with the switch bypassed.. but be careful as you'll be able to put the bike in gear with the side stand down.. don't ride away.

The wheel spinning is normal. When you pull in the clutch lever the clutch doesnt fully disengage. There is still friction passing through it so the rear wheel will turn. 99% of bikes do that, fret not.
Click to expand...

He described quite clearly that his side stand switch was functioning normally - he can start and run the bike in gear, and in neutral while the rear is in the air.
When he puts the side stand down, while the bike is in gear and the rear in the air, it shuts off (as it should).
The fact that the bike can be in gear (and continue to run), while on the rear stand with the side stand up CONFIRMS that the side stand switch is not what is causing the bike to stall when on the ground.

caboose483 said:
Bypass the side stand switch first. See what that does.
Click to expand...

How bout simply press the rear brake while the bike is running, on rear stand, with side stand up, and clutch pulled in.
His bike WILL stall, and that will definitively confirm that THE CLUTCH IS NOT DISENGAGING. - no electrical tinkering required.

This is not a simple electrical issue, it's a very simple mechanical issue - Hydraulic mechanical in this case.
 
I would agree that the problem is probably with the hydraulic clutch setup. I had a Honda 500V4 with a hydraulic clutch. Because of the placement of the slave cylinder, and I regularly rode gravel rods, it was constantly eating the piston on the slave cylinder, and refusing to disengage the clutch.
Either the master or slave cylinder could be shot. It could also just need a fluid change, or a new hose if it still has the original rubber line. It could also be that the clutch plates are sticky or warped, or the clutch hub or basket slots are notched, which would prevent the plates from disengaging fully.
 
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