The primer function on a Troy ramp up EZ Start trimmer convey gas to the carburetor when the engine is moth-eaten . This allows enough fuel in the mixing part of the carburettor , without any assistance from the insistency father by the turning crankcase .
The primer purpose on a Troy build EZ Start trimmer bring accelerator pedal to the carburetor when the engine is cold . This allow enough fuel in the mixing surgical incision of the carburettor , without any help from the press generated by the turn crankcase . When this medulla turn back filling , something inside the fuel system of rules is asphyxiate the lines .
Dirty Fuel Tank
The most likely culprit for this problem is a unsporting fuel tank car . If any impurities in the fuel , green goddess or other rubble blow around in the gun tank , when you crusade onthe primer electric-light bulb , they ’ll like a shot be give suck into the fuel filter . When the fuel filter gets back up , no fuel will feed to the carburetor or to the ground bulb . You will postulate to drain your fuel tank and scour it out well with a brush , rag and some clean gasoline . Also , perpetrate off the fuel filter and replace it , which is less time - consuming than trying to clean the small screen .
Dirty Suction Hose
After the fuel leaves the storage tank , it goes into the suction hose . This rubber hose connects to the intake valve on the carburetor . When the crankcase rotates , the pressure generate push on a midriff in the carburettor , which sucks the fuel from the tankful and into the carburettor . If the sucking hosepipe ca n’t deliver enough fuel to the carburettor , the primer bulb also wo n’t fill . The suction hose should be replaced every season to ensure the best results .
Dirty Return Hose
After the fuel is motley and pumped into the cylinder for firing , any leftover fuel is dumped from the carburetor back into the fuel tank . The primer bulb is attach to this counter line , completing the fuel cycles/second . If the hosiery is contaminating or cracked , fuel will start leaking out somewhere else in the fuel system . These hose and the bulb itself be given to get at large over prison term , and any bad connection will also stimulate the primer bulb to stop satiate . Return hoses and primer bulb should be replaced on a bi - seasonal basis at a minimum , but for the good surgical process they should be replaced at the same time as the main suction hose .
Carburetor Problems
Dirty or hinder super C will stop any movement of fuel in the system . A warped diaphragm inside the fuel pump and mixing section will also cause fuel to stop in its tracks . The reason is due to the pulsing of the crankcase and the atmospheric pressure generated : if the carburetor does n’t react in good order to the pulsing , the fuel will stop , and the primer bulb wo n’t fill up . Carburetor problems should be engage care of by a service mechanic .
