Suzuki Dt 4 Carburetor Manual
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Re: Same 4HP Suzuki Different troubles This is where you need a manual. The carbs are all different for different models and years. In general the main or high speed jet is located more or less in the center of the carb, probably sticking up through your carb bowl. The main jet on most carbs are fixed but some of the smaller engines may have adjustable high speed jets.
The idle jets are usually somewhere else and are almost always adjustable with a screw that may meter air or may meter fuel. This is important because if you unscrew it it might let in more air (lean) or more fuel (rich). When cleaning a carb you have to dismantle them and remove the jets and clean them in solvent and blow them out with compressed air and then reset the float heights and idle circuit adjustment. It sounds as though your idle circuits are still dirty and/or out of adjustment. Re: Same 4HP Suzuki Different troubles It sat in the carb solution most of friday night/saturday and saturday evening I took it out and put it back together after I blew all the passages out with air.
(Canned air)There wasn't a whole lot to it about eight parts total. And there was a little sediment in the bottom uf the bucket of solution but nothing else. I set the idle screw at 1 1/2 turns out and now that the float was mentioned,I'll go back and check that. As simple as it was I still feel like somthing got missed.
Suzuki Dt4 Carburetor Manual Download
Re: Same 4HP Suzuki Different troubles Yep, I did. The whole thing was apart in a little bucket of the carb cleaner and blown dry by a can of air after inspecting the soaked parts for build up. Like I said it was about 8 pieces total. The carb kit was a float, an o-ring, mounting gasket, float needle and the needle oring gasket for the bottom of the fuel bowl and that was it. The parts after cleaning shined like new money and had no build up of any kind on them.
It runs at mid to full throttle and runs smoothly but it won't idle unless the choke is at 1/2 closed. I have checked, and rechecked everything. The float level is a mystery because the kit had an exploded view of the carburetor and how it goes back together. No additional specs on it which bothers me because it was a genuine Suzuki kit. Re: Same 4HP Suzuki Different troubles Shawn, That should be a 1994 DT4.
Clymer manual says float adjustment is 0.47-0.55 inches. Bics cleaning manual. Flip carb upside down and measure from bowl seal bottom to the bottom of the float. Take the float off to bend the tab otherwise you'll damage the float needle. Idle air screw adjustment is 1 to 1.5 turns out from lightly seated.
Suzuki Dt 4 Carburetor Manuals
The screw meters air so when you unscrew it you lean out the idle. Screw it in to richen it. Based upon your description I would try starting it at 1 turn out. Hope this helps.