(Dropped a bolt into the abyss because I'm stupid and forgot to stuff paper towels in there.)
I've been on a bit of a bike maintenance spree lately, I replaced the drivechain + sprockets on mine and a friend's bike last week, and I decided that since I've been getting poor gas mileage lately, I thought I'd open up the engine and check the valves. Measured clearances, all were within spec (click here for my measurements
). Since it was early in the afternoon with plenty of sunlight left, I figured that I'd record the shim sizes for future reference (I usually just buy the shims individually). Removed camshaft caps no problem, and I went to remove the cam chain cover/guide - Aaaaaaaaaaand I dropped that little bastard of a screw straight down the tunnel. Shit.
If you listen closely, you can hear me lamenting my life choices up to this point.
I tried fishing around with a magnet taped to a long wire for a few minutes, and decided to suck it up and take the cover off.
After about an hour of searching around with a flashlight (and an endoscope), I couldn't find any trace of the thing. The abyss is deeper than I thought.
So... nothing for it but to take the damned rotor off. Luckily I had a spare rotor bolt but I had really hoped to not need it til now.
And, nothing. Still can't find any trace of this stupid bolt. I was pulling my hair out at this point. I started wondering if it's possible it somehow fell through the access hole to the oil pan. (above, right)
With nothing else to do I took off the inner cover, and would you guess who was hiding behind the left balancer:
I honestly don't think I'd have been able to get that bolt out of there without taking the rotor off, but I can definitely say I'd rather just not have had it happen in the first place. Safe to say that I learned a valuable lesson today that I won't soon forget. The important thing is that the bike's running just fine now.
Also: Quick question for the experienced: Is it ok to just leave the cam chain cover removed? (Talking about part # 12053-1353 (Upper chain guide), the bit that goes over the chain between the cam sprockets) It just seems like it doesn't really need to be there.