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FJR Motorcycle Forums
Technical & Mechanical Problems
Help? YCCS clutch engagement adjustment procedure
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<blockquote data-quote="mcatrophy" data-source="post: 1245449" data-attributes="member: 3187"><p>What I can tell you is that the disengagement speed appears to follow whatever idle speed the MCU has last measured. In other words, the disengagement speed is high when the cold idle is in operation, and won't reduce until the engine has been at its normal idle, even if you've ridden the bike for a long while, nor will it bring down the engine speed at which it will keep the clutch slipping.</p><p></p><p>This used to annoy me intensely, if you changed up, it would keep slipping the clutch long beyond where it was necessary.</p><p></p><p>Come to rest, engine at its warm idle, the disengagement speed would be at its low level after you set off again.</p><p></p><p>On my GenIII '14, it's sorted in that respect, presumably because the MCU knows what the idle speed will be by interrogating the ECU, which itself controls the idle speed appropriately for the engine temperature rather than the mechanical wax method used on the previous Gens.</p><p></p><p>A final point, if your reason for wanting to increase the disengagement speed is because the clutch seems to stay engaged so as to keep pulling until the engine speed is forced below the idle speed, this could be because you have a sticking clutch. A clutch soak improved this on both my '06 and '10 in this respect.</p></blockquote><p></p>
[QUOTE="mcatrophy, post: 1245449, member: 3187"] What I can tell you is that the disengagement speed appears to follow whatever idle speed the MCU has last measured. In other words, the disengagement speed is high when the cold idle is in operation, and won't reduce until the engine has been at its normal idle, even if you've ridden the bike for a long while, nor will it bring down the engine speed at which it will keep the clutch slipping. This used to annoy me intensely, if you changed up, it would keep slipping the clutch long beyond where it was necessary. Come to rest, engine at its warm idle, the disengagement speed would be at its low level after you set off again. On my GenIII '14, it's sorted in that respect, presumably because the MCU knows what the idle speed will be by interrogating the ECU, which itself controls the idle speed appropriately for the engine temperature rather than the mechanical wax method used on the previous Gens. A final point, if your reason for wanting to increase the disengagement speed is because the clutch seems to stay engaged so as to keep pulling until the engine speed is forced below the idle speed, this could be because you have a sticking clutch. A clutch soak improved this on both my '06 and '10 in this respect. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Help? YCCS clutch engagement adjustment procedure
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