The only way this motor will run is if it's primed thriugh the carb and then dies after that burns off,,,don;t know if the primer bulb isn't working right or if maybe the black diaphram how gotten too old and effecting it or an internal carb problem. This trimer was given to my son and don't know what has been done to it, if possible can you tell what the turns out are for the low and high mixture screws? Can't find any manuals for it.
Homelite support page was no help.
Usually with these small engines you start the needle placment by lightly seatign the needles all the way in and then 1and 1/2 turns out. That is enough to get the engine started, then ajusted while running almost always father in. Idel jet at idle , of course and high speed jet under load,if possible. I would start with the carb first as that is the most likely problem.
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Dump the fuel. Get a good fuel system cleaner and mix up a fresh batch of fuel. Pump the primer X20 and let it stand for an hour or so. Then try starting it again. If it still dies give a couple more primings and starting until the new fuel has had a chance to circulate around the carb. Now let it sit for a few hours to let the cleaner work on the carb. Prime it and try again.
The main jet of your carb is clogged and you need to open carb and clear the obstruction - spray carb cleaner on the bolt that holds the gas container to bottom of carb - also spray all the innards along with any tube that protrudes into the gas can.
Then using air compressor blow the sucker out and reassemble. That should do it.
I have seen a couple of different things cause this... Are the fuel lines hooked up and not split and fuel filter routed right in tank.(hanging freely touching bottom of tank lying flat) next if your carb has adj. screws H &L I have seen when the H is cranked snug (lean) that primer won't work right. Last but not least your Needle inlet valve is stuck shut and or the fuel pump diaphram little tabs are not sealing off chambers in carb on fuel pump side. make sure your fuel lines are properly hooked up to the right spots. when you push primer bulb it should squirt gas into the fuel tank, then when you release it ,it should draw fuel from the tank through the filter and thru the carb and then out to tank.
It seems that the carb is not getting fuel. It could be a cracked fuel line. The fuel priming bulb could also be cracked/dry rotted. Possibly the fuel pump in the carb is bad. The carb is rather intricate and not something anyone without training should try to repair. The overhaul kit will cost $15 to $20. I suggest you take the blower to a repair shop.
Go to Gardnerinc.com and click on consumer. Then click on partsmartweb. On the left side of this page change your selection from Kohler to Homelite Consumer Products and enter your model number. You have it as HT 17. This brings up a lot of different equipment so I would enter just part of the serial number or the ut number. This is located on the body of the trimmer on a silver tag.
This will take you to the parts illustration and parts list for your trimmer.
Was gasoline left in the tank during off season? Sometimes gas will break down and clog the jets in the carb. The priming bypasses the carb so when you put fuel in by pumping the bulb it runs, but dies becasue no additional fuel is coming through the carb after the primed fuel is burned off. Sounds like you need to clean the jets in the carb and in the future, use Stabil in gasoline to keep it from breaking down.