2008 Silverwing, squealing noise.

most likely, the primary clutch is faulty and requires repair or replacement.
Weight, Shift ? 14 ?Asm., Roller and Bushing

Bearing noises in a clutch system are easily distinguished by running a few simple tests. Start the engine and leave the transmission in neutral. If a transmission makes noise when it is in neutral it is often a worn input shaft bearing. Now depress the pedal until the clutch just engages. This is the point where the release bearing is just contacting the pressure plate fingers. If you begin to hear a squealing sound this is likely a worn release bearing. If a whirling noise is present when the clutch pedal is fully depressed it is probably the pilot bearing.

How is the transaxle boot on that side?

You should go back and review your work. Shrieking noises are not friendly. Oil ok? Proper adjustments? Proper parts in the proper order? All fasteners properly installed? All parts accounted for?

the brake pads have a wear indicator as the pads wear the indicator will tuch the brake rotor and make a high pitch shriek, so you need new brake pads.

I'm not sure what you mean by "engage the clutch". If you mean when you pull the clutch lever, the noise goes away, I'd check the tension on my final drive belt. If the belt is loose, when the engine tries to slow the motorcycle down, the final drive belt tries to rise up off of the front belt pulley making it rub the underside of the starter to inner primary housing. When you pull the clutch lever in, you disengage the engine from the transmission and the engine breaking force is removed from the front pulley and the belt goes back down on the pulley.

Good Luck
Steve

you need to check the front brake pads to see if the warning tab is touching the rotor ,this will squeal if the pads get worn out before it goes metal to metal, and if that is ok the only thing i would think of is the wheel bearing,

I was also told that this happens when the rear drive hub requires lubrication. grease that, and you'll be a happier camper.

A squealing noise is most likely the bearings going bad in the blower motor. This will slow the motor down. If the blower is not operating at the proper speed this will affect the temperature pressure relationship of the refrigerant. This will cause the unit to put out the wrong temperature. Running the unit to long under these conditions can possibly cause further problems ( including a very high electric bill). I recommend that use do not use this unit untill it is repaired or replaced.
Good luck.....

Noise comes and goes sound like metal on metal not a belt squealing