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Discussion Starter · #1 ·
Seems we've come across this fault now. Stall the bike and it won't start without finding neutral. I'm gonna try a bleed first? Was wondering if there's any mod for this? Is it possible to fit a microswitch on the clutch lever assembly? Surely the pressure switch is just an on/off switch?
 

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Discussion Starter · #4 ·
I need to bleed the clutch anyway as it's hard to get into neutral.

I have been looking at making a modification to eliminate the pressure switch. I take it the pressure switch is just an on/off switch? Also does anyone know if the circuit is made when the pressure is applied? I've taken things apart yet to do any testing.
 

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Discussion Starter · #6 ·
Well I've bled the clutch and managed to get at the connector under the tank. With putting a multimeter on I'm getting open circuit with the clutch operated, so the switch is knackered. Bloody typical!
 

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Discussion Starter · #11 ·
So I've made a temporary microswitch bracket to by-pass the original pressure switch as I think it's garbage... I'm waiting on a proper microswitch that fits the clutch lever assembly.
481482
 

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Discussion Starter · #12 ·
Well initial tests are good, works as it should! Will take it for a ride once the rain stops. I've fitted additional connections near the head stock so when the proper switch comes I won't have to strip the bike again.
 

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Discussion Starter · #18 ·
Right, but does decreasing or increasing the pressure mean the sensor is less likely to throw a code? Mine does this intermittently but it causes my Q-shifter to not function until its shut off and restarted.

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I suspect the contacts in the pressure switch are intermittently operating. If you intend to adjust it, I'd but a meter on the plug and measure resistance when operating the clutch. For the most part when the bike is in motion the switch is open circuit, it's only when you disengage the clutch the circuit is made. I really think heat is playing a big role with this error....hence the reason for going with a mechanical switch.
 

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Discussion Starter · #21 ·
So what you mean is that adjusting it out will make it so it's not turning on due to thermal expansion? Since it gets hot and expands, right?
I'm not sure on which way to adjust it as I gave up on it. I think thermo expansion is playing a big part in the way it's acting. I know when my bike is cold, the switch is open circuit regardless of the clutch position, I didn't really test when warm. But considering it only really plays up when the bike is hot, I suspect the switch is operated or even intermittent. I was finding the qs was intermittent in operation when the bike was warm even without the error warning.

After a 70 mile test ride yesterday, with 50% of the ride slow moving, the bike ran perfect.

I'm now just waiting on the new microswitch to come and I'll give all the details once it's running...maybe a worthwhile mod?
 
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