Idles but wont rev up

[jonathan180iq]

....thinking more, given the bike's age and low mileage, you really need to do this kind of catch up maintenance everywhere you get a chance. Think of it like restoring an old car. Even though it's an '05, it never even got past it's initial break-in period and then sat for 6 years.. That's a harsh life. Sitting for so long, and if the carb was dry, then some of the inner seals and things might have dried out as well, also leading to some of these symptoms.

I know it's kind of a different beast, but I once had all kinds of trouble out of an old '92 Murray push mower. I worked on everything, cleaning the carb, replacing the plug, check the seal around the muffler, changing oil... I even replaced the kill cable before realizing that there is a gasket and a rubber diaphragm under the carb which seals the area between the gas tank and carb. That diaphragm wasn't punctured or anything, but it was thin enough that when it stetched under the engine vacuum load it would allow too much pressure to build up in the system and kill the engine instantly. A $4 diaphragm resurrected a long-dead lawn mower.

Like I said earlier. Just hang with it. You'll get this.