Murre 20" 5.5 HP

Old 08-21-01, 04:29 PM
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I have a Murry Lawn Mower, 20" selfpropelled 5.5.
Hears my problem, I can prime the motor when pushing the primmer botton. Then it well start and run for about as much time that the gas I prime in. Hope you understand what Im talking about, Thanks, Need help
Old 08-21-01, 07:03 PM
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Fuel Starvation

Hello and Welcome nolapw to the Do It Yourself Web Site and my Small Engine forum.

The engine isn't getting fuel through the carb. There's a fuel restriction somewhere in the fuel system.

The problem could be fuel flow from the fuel tank or within the carb itself. Remove the fuel lone at the carb and allow the fuel to flow out while noticing the volume.

Watch the fuel flow rate doing this. If it diminishes as it is coming out, the vent hole may be restricted. If it stops totally, the vent hole is pluged. If all the fuel empties out, all is okay here.

If there is a restriction or blockage in the vent hole in the gas cap, the tank will drain until it pulls a vacumn in the tank, then the fuel will slow down until it stops flowing.

Also check the muffler for good exhaust flow. A damaged or overly rusted muffler may have internal damage causing an exhaust restriction.

Exhaust restrictions can cause several problems. Overall poor engine performance, excessive engine heat, failure to accelerate properly, hard starting, rough running and many more.

Regards and Good Luck,
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Bare in mind my company no longer services nor repairs lawn and garden powered equipment. The information provided is specific and accurate to the best of my knowledge...

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