I have a Briggs and Stratton 450E 8P502 engine with 3 pieces of piping spare wondering where they go

[go kart builder]

As title says but some more detail two of them are the same length probably 10cm ballpark tho and the other one is maybe 15cm and J shaped the petrol tank to carb one is already installed. i have already looked thorugh all the parts diagrmas and they arent in there Thanks in advance. Attached are the pcitures of the pipes

 

[Auto Doc's]

Them there be leftover parts. Someone playing a joke on you?

 

[sgkent]

did you take them off or did they come in a parts kit?