| Author | Message | ||
     Nevar |
My XB9S was idling at 900 RPM so I used the "idle adjustment hex-screw" to up the idle to 1100 RPM (the adjustment screw on the front of the engine, up high, on the left side). This worked fine except the engine RPM would hang at 2000-2500 RPM between slow shifts. So, I set it back to the 900 RPM and now it works fine - just like it did. I'm obviously missing something here... Tim | ||
| Buellman39 |
Turn it down a little at a time till it idles down correctly. The tachs on these bikes are not completely accurate | ||
| Nevar |
I wasn't clear with my description. Sorry. While setting the idle it registered correctly at 1100 rpm just fine. But when I rode the bike, the engine rpm would not drop back down between shifts - it would hang about 2500 rpm. Even when I came to a stop, the engine would take a long time to drop back down to 1100 rpm. So I reset the idle back to 900 rpm and everything is fine now... ????? Tim | ||
| Honu |
Take the air filter cover off all the way down to the throttle body and make sure the throttle cable and idle cable are not in a bind. I cleaned up the routing on mine and lubed everything with tri-flow. This stopped mine from doing what you are describing. | ||
| Ingemar |
You just set it a little too high, that's all. Set it to 1050 but no higher than that. If the idle is still hanging set it at 1000. 950 should be the lowest, but if it works it works. 900 is too low. | ||
| Wyckedflesh |
The last TPS reset I had done, the tech said my Tach registered 25rpm lower then his Digital Technician was reading. I set my idle so the middle of the needle bounce is just above 1000rpm. At 900rpm, did the bike cough or stumble when you came to a stop or when you went to take off? It could be that it was really set for 1000-1050 but your tach is that far off. One thing you can do, once its warmed up, roll the throttle on smoothly at idle, not fast but smooth and easy and see where the motor starts hitting the soft limiter. The gap between where the needle sits at the soft limiter and the yellow line is which way your tach is reading, either high or low.(note: do this with the bike in nuetral so your not trying to figure this out while riding.) | ||
| Nevar |
No. No stumble. It actually idles very nice at 900 rpm, but I read that the idle should be 1050-1100 so I thought I should increase the idle speed a bit. I may lube the throttle cables because even though the engine will drop down to 900 rpm when the clutch is pulled in and the throttle released, it does it slower than I am accustomed to - especially for a FI bike. Tim | ||
| Wyckedflesh |
That is flywheel effect. The weight of your flywheel is high enough that it takes it a little longer to loose that extra momentum then bikes with shorter strokes/lighter crankshaft/flywheel setups. | ||
| Hogs |
Yup I agree 900 is way to low shoot for 1000 or as high as 1050 no more,after the engine is warm of course! |
