I need the part number for this screw. when you remove that yellow plastic cover inside is a little screw, i lost mines

 

They don't sell that screw as a part. You need to buy the whole assembly

16680-PCX-003 #1 DAMPER ASSY., PULSATION
16705-PD1-003 #2 GASKET, MUFFLER
90428-PD6-003 #39 WASHER, SEALING (12MM)

 

so I have to buy all three?

oh hell nah!!

 

You need new gaskets when you remove and replace the damper. Not replacing them could cause your fuel system to leak. Not always, but crush washers are really cheap.

WTF did you take it apart for in the first place?

 

i didnt take it apart. i was just was curious so i removed that yellow plastic cover and noticed that the small screw inside was loose. so i tried to re-tightened it but it wouldnt screw in for somewhere. so when i took it out it accidently fell from my hand and fell down somewhere in the engine bay.

 

Time to start exploring with a magnet :-)