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Kohler engine carburetor adjustment on John Deere Model 112

Kohler engine carburetor adjustment. My normal rule when I do not have more info for all air adjustment screws: Bottom, then out 1 1/2 turns. Start engine, adjust idle air, then High speed. Any better advice?

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  • Anonymous Mar 12, 2014

    i need to adjust the valves on my kohler engine sv470



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When u adj a kohler carb you adj fuel not air. Always adj the high speed then low speed. Then adj the curb idle. 1.5 turns out is a good starting point. Then tweak it after its warmed up. Hope this helps

Posted on Nov 20, 2009


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I have a John Deere 110 with 17.5 kohler. Can't get fuel solenoid to pump fuel to the carburettor

There is a John Deere 110 and also a John Deere L110, two totally different tractors. You have the L110 . Because the fuel tank is under the seat and lower then the engine it has a fuel pump on the engine to lift the fuel and fill the carburetor.There will also be a fuel filter. This engine is a Kohler Command vertical CV491S.It has a mechanical fuel pump that is driven from the cam shaft lob. It is mounted on the opposite side of the carburetor on the engine.
john-deere-110-17-5-kohler-get-fuel-k4rtos32mwallqf4sr54o5xl-5-0.jpg When the engine is spinning it pumps fuel to the carburetor. On the bottom of the carburetor there is a fuel solenoid with wires hanging out of it.

john-deere-110-17-5-kohler-get-fuel-k4rtos32mwallqf4sr54o5xl-5-2.jpg Its job is when you turn the key on it pulls a plunger down and lets fuel feed the main jet in the carburetor and when you turn the tractor off it goes back up and plugs the hole to stop the gas from feeding the main jet. If this was not on there and you had it at operating temperature at higher rpm and shut it off the gas would go into the cylinder and be ignited by the glowing red carbon deposits and back fire possibly breaking the crankshaft rod. `
Remove the spark plug wire and stuff it in a glove to make sure we have no surprises.I would start by removing the fuel hose from the carburetor and placing in a bottle and crank the engine to see if fuel came out of the hose, if not I would change the fuel filter or at least remove it and blow backwards through it to make sure it is not plugged then replace it and crank again looking for fuel at the hose in the bottle. If you still have no fuel then I would replace the fuel pump. If you had fuel at the hose on the test then you need to place your ear close to the fuel solenoid on the bottom of the carb and list for a click sound when you cycle the key off and on.This would be the plugger opening and shutting as the key is cycled. If there is no clicking you need to check for current at the wire feeding the solenoid with a test light. Let us know what you find.

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Visit the on-line store, know as reliable-store, they have the repair manuals. I'm sure you will get the solution of your problem.
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