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Need some help with a hedge trimmer


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#1 Bolens 1000 ONLINE  

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Posted July 24, 2011 - 12:26 PM

I am working on a Homelite HT17 hedge trimmer for someone I know and I cant get it to start.

When I got it I gave it about 30 pulls and was able to make it run for about 5 seconds and that was it, so I figured it was a fuel issue and ordered a carb kit. I put the kit on today and it wont fire at all. I took out the plug and put a few drops of gas in and it still wouldnt fire! Its getting a decent spark so I have no idea why its not firing. I even took the muffler off and looked if it was plugged, but it was clean as a whistle.

Any suggestions appreciated :D

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#2 DH1 OFFLINE  

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Posted July 24, 2011 - 01:25 PM

Pull the muffler off again and check the exhaust port (if you haven't already done so), needs to be clean and clear.
If the port looks good try to start it without the muffler on.
If it starts you have too much blow by, needs a cylinder, piston, ring kit.
Learned this back when I worked at the landscapers on all the 2 stroke stuff, quick and easy way to tell if the motor is good.
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#3 Bolens 1000 ONLINE  

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Posted July 24, 2011 - 01:33 PM

Thanks going back out to give it a try

#4 Bolens 1000 ONLINE  

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Posted July 24, 2011 - 01:47 PM

ok... So took off the muffler, gave it a shot of gas and it sputtered for about 3 seconds then would die. I gave it a few more pulls and the same result (ran for around 3-5 seconds)

I think you hit the nail on the head when you said it was getting blow by. When it runs it seems like it lacks power to stay running.

#5 DH1 OFFLINE  

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Posted July 24, 2011 - 01:56 PM

A 2 stroke without the muffler on needs different fuel mixture, if you play with the choke you might be able to keep it running longer.
But the fact that it fires eliminates ignition trouble, you just need to decide if the carb is good. I'd say the is motor is well on it's way out.
Most of the small 2 stroke engines are Aluminum bore, some are chromed, either way they don't last long.
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#6 Bolens 1000 ONLINE  

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Posted July 24, 2011 - 02:18 PM

I decided to put some seafoam in the motor and I had it running for about 2 full minutes on full choke and wide open throttle.

#7 KennyP ONLINE  

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Posted July 25, 2011 - 07:07 AM

Might check the fuel lines, they don't seem to last long anymore.

#8 Bolens 1000 ONLINE  

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Posted July 25, 2011 - 07:12 AM

Might check the fuel lines, they don't seem to last long anymore.


I replaced both

#9 Bolens 1000 ONLINE  

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Posted July 25, 2011 - 07:13 AM

I think I have come to the conclusion that the motor is worn out...... I tried putting the muffler back on and now it wont even fire!

#10 MH81 ONLINE  

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Posted July 25, 2011 - 07:16 AM

My boss had one that was jut plain ignorant to start. Fresh gas, seafoam, whatever... Wanted to flood, or not get enough, or...

I finally dried off the plug and ran a LP bottle into the carb and started pulling. Eventually, it took off and has started good ever since. IDK what it did, but it helped. Even seemed to have more power afterwards, so I must've knocked some dirt loose or something.

#11 DH1 OFFLINE  

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Posted July 25, 2011 - 05:36 PM

I think I have come to the conclusion that the motor is worn out...... I tried putting the muffler back on and now it wont even fire!


The muffler on a 2 stroke causes back pressure, without the muffler there is less back pressure and less blow by.
That's why a engine that has some blow by, is hard to start, or won't start, will fire with the muffler removed.
Remember a 2 stroke uses exhaust scavenging to help draw in the air-fuel charge to run, tuned exhaust expansion champers.
Even though you engine doesn't really have that, it still factored in in the design of it.

#12 Tennblue59 OFFLINE  

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Posted October 07, 2011 - 09:09 PM

Sad to say, most of the time, for most of the cheaper saws, it isn't cost effective to fix them! I went through that with a little craftsman saw I had. Scored the cylinder - I could buy a whole running saw on "that auction site" for less than the parts would have cost to fix mine.




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