To get the lower airbox off, pull the seat and the tank. 4 bolts, 2 fuel lines with quick disconnects, and the fuel pump electrical connector.
Pull the driven clutch, move the oil tank, and remove the clutch shield.
To get the box out, there are two hose clamps that hold it in place.
To get it out is about a 30 min job. Everything comes apart very easily.
Depending on how many miles you have on the sled. Look into a set of V Force 3 reeds, or some reed petal replacements as long as you're in there.
Make sure you loctite the reed pedals back into place. You don't want one of those little bolts going through your engine.
Fuel filter should be replaced every 1000 miles or so.
My factory clutch spring is black.
The power valves themselves have a set of holes that go into the cylinder to get the exhaust pressure to open the bellows when the solenoid is closed. If those holes are clogged with soot\carbon, you can clean them out with a very small drill bit. DO NOT PUT THE DRILL BIT INTO A DRILL.
You're gonna be looking at about a 4mm hole that tapers down to a 2mm or so opening.
You can also blow them out with some compressed air.
When you remove the power valve, you will see the holes.
