Yamaha 90TLR -need to adjust carbs

[freetime99]

I have a 2008 - 2stroke 90 that needs low speed carb adjustment ( rough idling)
Can anyone send me the procedure to do this ? Thanks.

 

[rodbolt]

Re: Yamaha 90TLR -need to adjust carbs

there isnt any adjustments on the carb.
the air/fuel mixture screws have a plug over them.
if its idling rough odds are something is broke or the carbs are dirty.
the plug can be driled and removed if nessasary for cleaning.

 

[scisgr8]

Re: Yamaha 90TLR -need to adjust carbs

The carbs are not difficult to take out and clean. I'm a novice and I did this on my boat and found that the float (needle) was stuck, cleaned them good and problem solved.

 

[robert graham]

Re: Yamaha 90TLR -need to adjust carbs

Maybe check fuel pump for bad diaphragm, also drain each carb onto a clean white rag to try to get an idea for what water/debris may be in them. With drain plugs out, pump primer bulb to flush float chambers with fresh fuel. Carbs may need cleaning but you could check these 2 items first. Good Luck!