Question about Generac 40 Kw Natural Gas/propane Generator

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I have a toy hauler with a generac generator propane that wont start getting gas and spark but wont start model 04164-0

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Check the comprssion, if you are sure you have a spark and gas. Is the fuel been delivered to the cylinders? Check the fuel solenoid for power, if power is present the demand gas regulator maybe gummed up. LP companies put a waxy lubricant in the gas and over time this can build up and harden in regulators. Also during crank observe the throttle is it going open as it should? if not suspect a control issue

Posted on Nov 17, 2013

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Posted on Jan 02, 2017

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SOURCE: Generac generator remote start

si tiene transfer automatico solo poner un swicht en hilo 1N para cortar senal de entrada al generador del utility power que sensa la presencia de voltage en caso de falta arranca el generador en forma de prueba

Posted on Jun 20, 2010

  • 30 Answers

SOURCE: my standby generator is just cranking but wont turn all the way

If it was installed only five months ago, it should still be under warranty. Call Home Depot and have them send out a repair person.

Posted on Jul 01, 2009

  • 384 Answers

SOURCE: 10kw Generac Guardian not cranking, shows rpm sense loss

Sounds like Generator mode switch should be "ON".

Posted on Sep 08, 2009

  • 1 Answer

SOURCE: I have a new Generac 20KW Propane generator with a

Sounds like the electritian wired something wrong. Control wiring for that generator should be:
N1 and N2 = 240 vac utility input
Wire 0 = ground
Wire 194 (15B) = + battery
wire 23 = transfer signal

Posted on Oct 30, 2009

  • 17 Answers

SOURCE: generac 20,000kW Standby generator doesn't start shows message STOP ALARM OVERCRANKED

Overcrank means that it tried to start and couldn't. It will go through 5 crank cycles and then stop with this alarm. Switch to off, hit enter to clear fault and then try to start in manual. Check to make sure you have fuel and pressure is 11 to 14 in WC.

Posted on Sep 21, 2012

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Cleaned and adjust carburetor per Repair Manual. then adjust governor repair manual and should take care of problem on this old generator.

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please send me more info about this generator I need a model number is this a natural gas or propane I have a neighbor that just had one installed I might be able to get some info from him to help you

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My standby generator is just cranking but wont turn all the way


If it was installed only five months ago, it should still be under warranty. Call Home Depot and have them send out a repair person.

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throttle motor or governer board. or control board. your gas line could be to small. check the pressure while its cranking to see if it drops. watch the throttle to see if its moving while trying to crank the generator

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Start runs shutsdown


Typically caused by the fuel line (LP or Natural Gas) having a lot of air in it. Was your generator just installed, or was there any work done to the gas line of the building / generator? Consult local gas contractor / propane dealer / gas company for assistance in purging the fuel line.

A low battery can also cause this as well as the generator is not able to come up to starting speed quick enough. Try placing a stand alone battery charger on the generator and charge the battery. Also check the air filter as well.

OverCrank condition occurs when generator tries to start itself, or be manually started, and the starter spends too much time turning.

This can also indicate failure of the control board. This will need the expertise of generac technician. Call 1-888-GENERAC (1-888-436-3722)
M-F 7am-6pm Central

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