Question about Homelite Mighty Lite Lawn Trimmer

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Primer bulb will not take in the fuel in it seems block

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A fuel system inspection is needed here. You need to check the intank fuel filter,(make sure its not clogged) the condition of the fuel lines,(soft, not brittle with no tears or cracks) ,the ventin the gas cap,(little rubber tube must allow air in). Foremost, check the condition of the bulb itself:sets in (primer base assembly) that has very small check valves inside it controlling the inflow and outflow of fuel. There cannot be any air leaks as the bulb on the carb and one mounted remotely from the carb depend on a vacuum effect to operate correctly. So some disassembly and acute inspection will be required.

Posted on Nov 08, 2010

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Posted on Jan 02, 2017

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1 Answer

When i press the primer bulb in it want pop back out why?


The thing to understand is that this is not a primer, it is a purge and there is a big difference, a primer pushes fuel into the carb, a purge pulls fuel from the carb and dumps back to the tank, so when the bulb is pressed in, fuel in the bulb is pushed back to the tank, when the bulb comes our fuel is sucked from the carb, if the bulb stays in either the filter in the tank is blocked, or the fuel hose is trapped, or the filter in the carb is blocked, or somebody has fitted the pipes on the carb round the wrong way.

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Probably a valve in the priming system is stuck. It allows fuel to flow into the bulb from the tank, the valve should close then and allow the bulb pressure to spray into the carburetor. Could also be the opening into the carburetor from the prime bulb is blocked.

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1 Answer

I can't get it to start. Don't think the gas is moving when I pump it to start it. When I push on the bulb, it doesn't appear to pick up fuel.


Is the primer bulb filling with fuel.? If not then you either have a hole in the primer bulb or a hole in the fuel line, you mat also have a blocked primer bulb base.

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Primer bulb will not prime


Sounds like it could be a number of faults.
1. Crack in the primer bubble its self, not allowing the creation of pressure or vaccum.
2. The plastic primer base has a valve in it. That could either be blocked or damaged.
3. Blocked up fuel line (not very likely)
4. Hole in the fuel line which is sllowing it to suck air up and not fuel.
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primers pull fuel from the carb and dumps it back into the tank, so if the bulb will not prime the chances are the fuel filter in the tank is blocked, pull the fuel hose through the filer hole and replace the filter on the end.

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1 Answer

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1 Answer

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Hi

Priming the engine(put some gas in the sparkplug hole)..If.Start the engine.If only the gas from the cilinder is burned change the lines prom primer bulb.

best regards savumihai71

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