Running Hot?
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76 XS650 C ROADSTER
80 XS650 G Special II
https://ibb.co/album/icbGgF
80 XS 1100 SG
81 XS 1100LH/SH DARKHORSE
https://tinyurl.com/k6nzvtw
AKA; Don'e, UD, Unca Don'e -
When you start using the choke you are introducing extra fuel to the engine. The engine may not be able to handle all the excess and some will burn past the engine and into the exhaust. The fuel burning in the head pipes will cause the head pipes to heat up nicely basically warming the engine faster. That is normal, typically these bikes are lean from the factory to meet EPA regs..
What pipes and air filters are you running ?81 SpecialComment
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