mid range bog yamaha 2004 ftlr 40

[tooner]

had starting issue cleaned carbs starts fine. runs fine all the way up to high speed, if i ease the throttle up slow. problem is when i hammer it it falls on its face and stalls. if i have it above half throttle and hammer it, its just fine when i went to put the carbs back on i noticed the throttle linkage lock nut and the shifter lock nuts were loose backed off about one inch doesn't one of these control the timing advance. if i put it in neutral and rev it up it pops back through the carbs once in a while.

[boats.net]

The carbs are still plugged. You still have blocked passages or jets in carbs. Yes the timming is set by those bolts and need to reset timming.

[tooner]

reset throttle and shift linkage runs like a top. as a matter of fact runs better, because the way the it was set up it never went past 3/4 throttle. i always thought it was kind of slow for a 40hp motor. i picked up another 8mph. i think whoever preped this boat didn't do a very good job.