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any help would be appreciated. i recently purchased a f40 and it’s bogging under lid at 1/4 throttle. did some research seems to be a common issue. took to my mechanic he cleaned carbs said they weren’t really dirty reassembled put back on motor same thing still boggs. during my research i found this mod that everyone says fixes the issue and that was to install f25 jets. so i ordered all new jets and gaskets. he cleaned again in a ultrasonic cleaner and installed new jets. same thing still bogs under load. he had a brand new prime starter assembly laying around threw it on it. no difference. he installed new plugs, fuel pump, and used brand new gas. we’re both at a loss with it. anyone have any suggestions? thia
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