Question about Husqvarna 160 CC Honda OHC Engine 21 in

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Carb will not shoot gas in engine w/primer.

I'm an 8th grade science teacher and also teach a small engine class. I've compiled 42 Briggs vertical shaft 3.5hp-3.75hp engines. 20 are dedicated troubleshooting engines. I think I know my way around this engine, but one problem stumps me. I have approximately 8 carb/tank combos which I have completely disassembled (diaphragm, fuel pickup tube, primer, check valve rubber, ball, spring, main jet) except for the steel balls which look like orifice plugs and not to be removed. When the tank is filled w/gas, the primer pushed, no gas come through. I've had engines do this (not prime) and I poured some gas straight into the carb, started the engine, then the primer would work. Seems there should be a better fix. Would really appreciate the info as I'm on a budget. Thank you. Carlton Ochner Stockton Middle School

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  • bruce_patric Mar 01, 2009

    I have a 2 stroke victa Shindaiwa s20el cabi will not shoot gass in engine can you help.


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oval or round form
At the diafragm part,under it, there is a technological cover(made of alluminium).Under it there are some orifficies,make conection with "Venturi"wall from the carb(three orifficies I think).Some way remove that cover and clean the small plugged holes.You need to change it with a new one.Please let me know how the things are going on.

sincerly yours savumihai71

Posted on Dec 10, 2008

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Hi, check the primer rubber too see if there is small leak in it. and replace the gas tubes inner and outer

If this doesn’t work for you please write back. Thanks,

Posted on Nov 23, 2008

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Try this the next start. Take a screw driver handle just a bit smaller than the primer bulb and FORCE it against the carb body trying to make a seal with the primer rubber against the carb body. You use your thumb if you can manage to depress the entire area of the center of the primer bulb agains the carb body. If it runs normally when you do this..... the Primer Bulb has a pin hole in it. (No joy..... read on)

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If you need parts info respond with your engine number or go to and look it up for yourself using your ENGINE TYPE MODEL SERIES number found on the air shroud above the spark plug.

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