Rough at around 3500 rpm + lean

My (fully stock) 700 is running very rough at around 3500 rpm and up a bit and also seem rather lean. Since it's stock it sounds like carbs just need cleaning right? I'm not at home so I don't have most of my tools. Anything special needed or just ordinary tools most have?

TheForumTroll wrote: My (fully stock) 700 is running very rough at around 3500 rpm and up a bit and also seem rather lean. Since it's stock it sounds like carbs just need cleaning right? I'm not at home so I don't have most of my tools. Anything special needed or just ordinary tools most have?

May indeed result from imperfectly clean pilot circuits.

But before tearing into the carbs, would first consider other things such as valve clearances, pilot adjustments, sync, fuel levels (clear tube test), condition of air filter, air leaks, fuel cap venting, kinked fuel line, etc.

Good Fortune!

TheForumTroll wrote: My (fully stock)... Anything special needed or just ordinary tools most have?

Would want to have on hand --- perfect sized screw drivers, easy-outs, reverse drill bits, Kroil, torch, pressurized carb cleaner spray, new gaskets, eye-wear protection, compressed air supply, magnifying glass, items needed for clear tube test, etc. (because there's just no telling what one may run into during the carb cleaning process).

There's also the possibility of needing new jets, or other replacement carb parts, or carb holders.

Also , removal and replacement of the carbs (from and back onto the engine) can be a pain, especially if contending with old hard air-box hoses (may need a hair dryer).

The parade of horribles seems never-ending.

Visions of SeaFoam dance in my head. :lol:

Good Fortune!

Oh my, I suddenly don't feel too sure about doing it without my own tools

Pilot screw adjustment could help at those high rpm's?

TheForumTroll wrote: ... Pilot screw adjustment could help at those high rpm's?

It's not so much a matter of rpm as it is the carb throttle position.

The throttle slides may be only slightly cracked open while easily cruising along at 3500 rpm, where the pilot circuit is still influencing the air-fuel mixture.

Would adjust -- in the normal manner -- each pilot screw for the best attainable idle rpm, which may improve smoothness at cruising speeds with the throttle barely cracked open.

If turning the pilot screw fails to produce a noticeable change in idle rpm, there's probably something wrong inside the carb (perhaps an imperfectly clean pilot circuit).

Good Fortune!

How would I best adjust the pilot screws? Turn one in until it gets worse, then out til it gets worse and then set it in the middle of the two?

Would also verify that the advancer springs are functioning properly