Question about Ariens 42 in. 19 HP Kohler Hydrostatic Riding Lawn Tractor
Ariens 42 19 HP Kohler Hydrostatic #960460002 Twin Cam OHV. purchased '09
Posted by Anonymous on
Your Ariens mower model number is actually 936038 as the other number is the Husqvarna model number.
You should also remove the engine shroud and check for mouse bed and damage wiring.
Although it was stored empty of fuel the carburetor could have had some remaining fuel which could clogged the main jet.
Posted on Apr 20, 2015
Won't start. In storage empty18 mths. Replaced oil, filter, fuel filter, spark plug, New battery. Fresh gas w/stblzr. Engine cranks but won't turn over.
Without the exact engine model, I am not sure which Kohler 19 HP you have. There are different models including single cylinder with fuel pump, single cylinder without fuel pump, and multiple versions of the twin cylinder. Therefore, some parts of this answer include generalizations which may or may not be applicable.
Sooo, with the new battery the starter motor does crank the engine; the engine turns over. This informs us that the engine/bearings, has or have, not frozen up while in storage. However, I believe you are indicating that the engine does not fire up and begin running; it won't start and it won't run.
We know the machine has been in storage 18 months. Was the machine completely emptied of fuel, tank and carburetor, prior to long term storage? That is the question of the day.
I am going to assume the machine was running fine the last time it was used; prior to parking it in storage. That means we are assuming there are no mechanical problems with the engine. I am going to assume, with the installation of new plugs, you checked for spark and all is good in that area. This really leaves us with a fuel system problem.
A mechanically functional (meaning all the internal parts are working, i.e. pistons, valves, etc) engine requires 3 things all at the right time, air under pressure (yes they call that compression), fuel, spark. So the quickest way to start your diagnostics is to remove the cover over the air filter and then remove the air filter. I do not recommend spraying Quick Start.
Do yourself a favor, leave the gas cap off and turn the outlet air on your compressor down below 20 psi. If the tank is nearly full you will blow gas out of the tank. Do this outside if possible; at the very least you need a well ventilated area. After blowing air from the air filter back to the tank, you may have to reverse the process and pressurize the tank to get the fuel started. I place my hand over the open tank and hold the air hose between the joint of my thumb and forefinger to seal the tank, and then squeeze the trigger. Once you have a good fuel flow out the line to the filter, reinstall your FRESH FILTER. Try cranking the engine. If it still does not start move on to the fuel pump and carburetor
The following is an "out of carburetor" electrical check up.
What else could make the Fuel Cut Off malfunction??
Connect a volt meter across the two battery posts. If battery voltage drops below 9 volts when cranking or while the engine is running, the fuel cut off solenoid will not function. That means the engine will not start or will die soon after starting. So check your battery voltage before, during, and after cranking. If the battery voltage is good before but drops below 9 volts while cranking this is generally a sign the battery has one or more bad cells. Replace the battery. If the battery is in fact good, and the voltage is still dropping, you may have a bad starter motor which is drawing too much amperage.
If you find this fuel checkup does not solve the problem, repost your question with updated info (exact engine model) and I will walk you through the next step. Tracking down a spark problem; yes, your problem could involve the coil, coil wire and spark plug.
Small Engine Repair Checking Vacuum Fuel Pump Fuel System on Kohler Twin...
Posted on Apr 20, 2015
Testimonial: "Thank you for the quick response. That is a lot of info to digest. I will start on it asap. It is a twin cam engine model# SV590S."
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Posted on Jan 02, 2017
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