Honda 250BF.

[Muzz30]

Engine temp increases over 200 degrees at approximately 4100 rpm. Mechanic told me there were thermostats underwear and throttle control connections. I can’t get to them. Any advice is appreciated.

 

[Heligeorge]

Underwear?

 

[Deuxgrenouilles]

There are thermostats under the silencer case. The shop manual has clear instructions on replacement. I'm not sure if you need to replace yours. My BF 200 runs at 200-208 degrees at 5000 rpm. I think as long as the overheat alarm doesn't go off, you should be fine.