Actually I am sponsored by YS. I am not paid by YS. SO yes there is a bit of a fine line there. Richard and Dave are changing their relationship in the business. Dave Shadel and Richard have been the importers of YS engines since about 1999. Before that Richard worked for Futaba Corp of America handling repairs and the importing of YS engines through Futaba Corp of America. Right now Richard and Dave have been partners since 1999 and Richard is in the process of buying Dave out. In the interim I have offered to help Richard out with the RCU forums in order to keep a valuable support system in place for guys that are on here and need advice on the engines.

There are some changes that are in process but things are not finalized just yet. The new website is up and operating, and Richard is trying to get some content on it regarding basic setup techniques and procedures. I'm sure some changes will be coming to the instruction manuals and also other things to improve the experience folks have with YS engines.

That all being said:

The FZ style or pressurized engines get fuel very similarly to your 2 strokes. It goes through the bottom of the case on its way to the big boom.

The cam gear is a part that is pretty far removed from the other internal parts. Yes oil will get there and actually it will get there pretty quickly in that first run on your engine. The DZ engines are the ones to really be concerned about. These are the engines that are direct injected. The fuel goes right up to the intake valve. Your 110 is not this way and its not as critical. Its a good idea on any new engine to oil it up, but on the other side of this coin if you put too much oil in on a new engine they can become difficult to start the first time. So any oil you add it doesn't take much at all.

I would bet that your engine is fine.

4 strokes are a little different and the major manufacturers do things slightly different. Saito vs OS vs YS all have their own little design that changes the needs for care and feeding.

The main thing is that the engine is not running lean and backfiring, on that first run. If it was lean and backfires and the cam gear is dry chances are its gone or will be soon. If you are not having trouble don't worry its fine. Just remember the next time out.

You did nothing wrong, and I ran YS engines for over 10years with never oiling the cam gear area specifically on a new engine. I really didn't have cam gear issues sometimes I would have a failure or a premature worn part, but as I got more experience with the engines I started doing this. Its a little ritual I do. I have searched the forum a bit and don't see much posted about it by Dave in previous months. So Obviously its not a critical issue to Dave and Richard. To me its a good idea. I will continue to do it. It doesn't hurt anything.

On the screws. I don't have toque values but if you have a torque wrench you can find the torque values for the small 2, 2.5 and 3mm screws in a standard machinist handbook. You don't need lock tight on these screws. make them tight but don't torque them down like a gorilla. Namely the carb, airbox, and backplate screws. tighten them in a crossing pattern to keep the part from warping when you tighten it. It should be tight, but not so tight you are threatening to strip threads.

I will do some research and come up with some torque values for the bolts on the engines.

I've never needed them before.

Troy Newman
Team YS Performance