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I cured the clack!


handkphil

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I changed my clutch lever  out for a new one a few months back. Ever since, I've been hearing a  fluttering, "clacking" noise coming from somewhere underneath my tank, when I pull in the clutch all the way with the bike in gear. I took off the small micro switch near the clutch lever, and cleaned the two wiring connecters that plug into that switch. No improvement. I took the switch off again, and tried to clean the very small contacts located inside the micro switch. Still no improvement in the clattering noise. Since I figured it was the flapper valve that was intermittently opening and closing at a medium-high frequency, I lifted up the tank and pulled off the vacuum hose to the flapper solenoid. Problem solved. I plugged the vacuum hose up good, and my test ride revealed that the problem has gone away. I think that rather than trying to replace that micro switch, I will just leave the flapper disconnected... 🙂

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On 11/11/2020 at 12:15 PM, handkphil said:

I changed my clutch lever  out for a new one a few months back. Ever since, I've been hearing a  fluttering, "clacking" noise coming from somewhere underneath my tank, when I pull in the clutch all the way with the bike in gear. I took off the small micro switch near the clutch lever, and cleaned the two wiring connecters that plug into that switch. No improvement. I took the switch off again, and tried to clean the very small contacts located inside the micro switch. Still no improvement in the clattering noise. Since I figured it was the flapper valve that was intermittently opening and closing at a medium-high frequency, I lifted up the tank and pulled off the vacuum hose to the flapper solenoid. Problem solved. I plugged the vacuum hose up good, and my test ride revealed that the problem has gone away. I think that rather than trying to replace that micro switch, I will just leave the flapper disconnected... 🙂

 

Haha, you performed a PAIR valve mod and fixed your annoying sound all in go. Great success 😄

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