It’s necessary to have that part. That saw will boil the fuel in the carb guaranteed without that partition wall.
Gotcha. Agreed that divider needs to be there -- to keep debris out of the airbox if nothing else. And I also understand it's purpose as a heat barrier as you stated. For some reason I was thinking what Ira pictured was a different, non-standard insulator of some kind for additional heat absorption -- like a plastic vs. metal carb spacer on an older 351 Ford 2-barrel. Sorta jumped to conclusions, there. My bad.
On the other hand, an awful lot of air is blown into the air box from the flywheel airjet -- a lot --, not to mention air drawn directly into the carb through the air filter. 'Course if you're running a stack, so much for the airjet contribution.
While not denying vapor lock can be a problem and has various causes, (many self-inflicted in cases of poor maintenance and a saw caked in crap), I still contend that hot starting issues are just as frequently related to other areas besides vapor lock..., including funky tank venting, poor tuning, ignition -- or the operator simply not taking excessive heat conditions into consideration and operating the equipment well beyond its realistic capabilities, which gets worse with lousy fuel/leaner mixes and at higher altitudes.
Last time I checked, Husky is still making the 395xp with no radical design changes to address the vapor lock 'problem'. Guess they figure anyone who buys one either knows it has a vapor lock 'problem' right out of the box, or more than likely will
cause the problem if/when the saw actually experiences one.
Regardless, I'm still looking for that elusive 394/395 project for myself that I'd only run at sea level when it's 50°F with a light breeze blowing and no vapor lock. Just me, my saw and a beautiful sunset.
(So much for back-pedaling and standing my ground at the same time, eh?)
Sorry guys. Too much coffee this morning. I'll go now. LOL
