Idle at 4500RPM. Idle screw won't do anything

[pgshields]

Honda BF50A. Just got back from shop because I had no idle. Got the carbs cleaned. Then it wouldn't idle without Choke. Now I got it back and it idles at 4500 and won't go up or down. It sounds like I hit a wall when I change it into gear. Any tips? It's a pre 1997 Honda bf50a. Thank y'all for everything.

 

[alldodge]

Disconnect all linkage from the carbs and it should idle down, if it doesn't something is keeping the throttle plate open

 

[flyingscott]

Go back to the shop that worked on it they should stand behind their work.

 

[GA_Boater]

Go back to the shop that worked on it they should stand behind their work.

Agreed!

And I wouldn't be shifting out of neutral at 4500 RPM until it's fixed. It isn't doing your lower unit gears any good or what ever you run into.

 

[pgshields]

Boat is at the shop now. One guy said it's probably a vac leak somewhere