Dittos to all the above Yes, the part is easy to replace at a price and no it does not need to be attached to the the engine and attaching somewhere else is a common repair, read cheap.

Now on the your statement above and why it does not have a lot of power. The LA's with the excecption of the forty are not old engines but a still in production series. The are intended to accomplish two things, the first being the lowest cost of OS's for their displacement. The other is to be extremely user friendly for beginng glow engine operators. This they accomplish very well being very easy to learn to adjust and start with reliability.

Power is deliberately dumbed down in these engines first by using a much smaller venturi size for their displacement which has the direct effect of increasing fuel draw characteristics and makes for a far more reliabilty with even poor tank to carb relationships from poor installed tanks. This has a tendency to also increase idling reliability as well a a greater tolerance for a poor needle valve setting.

These engines also include far less aggresive port timing of the more expensive and powerful FX and AX series engines of the same displacements. Another item is the bleeder carbs which will work acceptably over a wider range than the common double needle type. Yup another concession to being easy to learn to operate.

So your statement that it runs great but not much power simply means its doing its job well and nothing is wrong so don,t fix it.

John