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Re: primer pump lacation
Not all mowers use this feature to start their fuel flowing. Try using choke for 2-3 pulls, and reduce to half-choke if it starts. If all else fails, make sure it's not flooded by opening up the throttle for a few pulls.
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I do not list a Mitsubishi Lancer in that year. Double check your information. It could just be foreign, in which case I cannot help a whole lot. Most fuel injected vehicles will have an electric in-tank fuel pump.
Given you have not provided the model or year it is a bit hard to give you advice. As a general rule, if it is fuel injected, the pump will be in the fuel tank, and if it has a carburettor it will probably be a mechanical pump installed on the side of the engine.
This particular JD engine has an individual fuel pump for each cylinder. The injectors, fuel lines, and pumps are not accessible from outside of the engine. There is a hand primer pump built into the top of the fuel filter. Start by removing the rubber outlet line from the filter base and pump the primer pump until fuel come out of the filter base outlet. Ounce fuel comes out of filter reconnect the line and continue pumping by hand until the pump button feels solid, then crank engine until it starts. This works better if a helper is available to operate the starter while continuing to pump the hand primer. This is normally all that is needed after running out of fuel.
If fuel does not come out of fuel filter base there may foreign material inside of primer pump. Primer pump can be disassembled and cleaned. If fuel comes out of filter, primer pump become feels solid but engine does not start the fuel control rack inside of engine may be sticking in the off position. This may sometimes be overcome by clicking the key switch from off to on rapidly. If not you may have to have your dealer remove the governor cover to free the rack.
The fuel pump is located in the fuel tank. The fuel tank will need to be removed from the vehicle in order to service the fuel pump.
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The line at the rear of the fuel tank with the fuel filter is the main feed line to the carburetor and connects to the upper nipple. The lower nipple on the carburetor goes to one of the primer ports, and the other primer port goes back to the tank, which has no filter on the tank end. On the primer port, it is cut and try--remove the tank return connection and leave loose. Place the main fuel line on to one of the primer ports and try to pump fuel into it with several pumps.Make sure the filter in the tank is not plugged. If nothing, shift the line to the other port of the primer and try pumping again. When successful, remove the main fuel line and return it to the upper carburetor port. Run a new line from the lower carburetor port to the active primer port and try to pump fuel again. If it won't pump fuel, reverse the two connections at the carburetor and try to pump again. If still nothing, there is trouble within the carburetor which should be cleaned with spray carburetor cleaner and maybe re-kitted. When you can finally pump fuel through the carburetor, then attach the tank return line to the open port on the primer bulb. Hope fully, the engine should run at this point. Hope this helps!
Finding the correct ports on the primer pump are trial and error. Remove the main fuel line from carburetor and place it on one port on the primer (the other port should be left open). Pump it--if correct connection, it should pump fuel from the tank into the bulb. If nothing, place the line on the other primer port and repeat the pumping. One of these two connections should draw fuel from the tank. Install the line that goes to the tank (but no filter inside) on the empty primer port and remove the main line from the primer and connect it back on the carburetor. There is a lower side port on the carburetor that should go to the just-vacated port on the primer. Operate the primer again and it should pull fuel from the fuel filter into the carburetor, through it, and back out to the primer port, then back into the tank. Hope this helps!
Check the condition of the primer bulb for hardness or cracking. If ok, remove the line that goes from the bulb back into the tank and try to pump fuel from the carburetor. If nothing, switch the position of the other line at the back of the primer and try to draw fuel again. If hooked correctly, the primer will pull fuel through the carburetor body filling all cavities and into the primer bulb. If still nothing, try switching the lines at the carburetor (it should not pump backwards through the check valves in the pumper chamber). If still nothing, switch the primer connection again. Some combination of line connections should allow fuel to be pumped through. When correct, reconnect the loose primer line to allow fuel to return to the tank. This is a good reason for replacing only one line at a time. Hope this helps!