There ALWAYS ends up being some sort of discrepancy which has the potential to damage a friendship..... best to approach with extreme caution.
Case in point.
Last Thursday, my coworker that bought his uncle's extremely low mile 954 rr tossed me his keys. I would normally turn down the offer, but I've ridden other bikes of his and have offered much constructive advice on repairs to this one..... couldn't refuse without insult.
He's rebuilt the suspension, brakes, replaced chain and sprockets, tires.... all on my advice. How could I say no, after all that? He really wanted to get my approval of what he has accomplished.
So I geared up and rode it off base when I needed to run an errand. I looped out one gate and came back on an alternate route through the other. Maybe 15 miles, total. I'd expect that it was less. Lunchtime traffic was heavy enough, I couldn't pin the thing..... and I didn't want to. Romped on it moderately, but not in any way excessively. Nowhere near red line, no max braking, hard cornering.
The bike's idle was set at 1K RPM. Too low. Made the throttle response immediately off idle very poor....the things was painful to ride in very slow traffic. Especially because the clutch engagement was set at the end of the lever throw. The furthest out -1" .
I brought it back to him, and when he asked me about the bike, I told him what I thought. I asked him if he would mind if I adjusted the idle up to where it should be.... he agreed, so we both walked out to the bike and I showed him where the idle adjustment knob was. Started the bike, tweaked the idle speed up to about 1300. Much better response. No more flat spot.
We then set the clutch engagement point for full engagement at about 2/3 out from the bar. I checked that half a dozen times.... I turned the knurled adjuster at the clutch lever probably four or five complete rotations into the perch, to get it right.
End of day I rode out first. Friday, I have to drive in, so I expected to see my coworker show up on that well adjusted machine. He drove his truck, saw him in the lot, so I asked if the bike had improved as much as I thought it had?
Imagine my surprise when he said that the bike had been unridable and was back at the shop!
He said it lost all power and sounded horrible as soon as he started it to ride home. By the time he got it there he says it was only running on two cylinders and making noise.
I know this man well. I believe he doesn't hold me accountable, but I feel horrible about the timing of this. It sounded fine, when we were done adjusting stuff. He even ran it after I had adjusted it without issue. No smoke, no smells, no sounds out of the ordinary. Temp is right on the money. Said he liked the changes. Much smoother off the line
I've been kicking this around since Friday....
I just didn't know what happened.