Homelite String Trimmer Won't Start-No Spark

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  #1  
Old 04-06-09, 02:25 PM
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Homelite String Trimmer Won't Start-No Spark

Homelite 2 cycle string trimmer won't start.Put it away last season with fuel treatment as I have done for so many years.

After trying to start this B!tch for about fifteen minutes(I'm 64)
I brought it over to the bench and pulled the plug,cleaned it and put it back...No Dice...Pulled the plug again...PLENTY of fuel...
Hooked up the plug wire with the plug OUT of the cylinder head
and grounded the "thread" side of the plug to the cylinder head body...just as I would have thought..No Spark.

Went and got a Brand New Plug...Checked for spark OUTSIDE
of the combustion chamber...No Spark.

Before I pull this thing apart, can anyone here give me a hint at what I might be looking for?

Is this electronic-is there a magneto of some sort-might it be as simple as a grounded coil primary wire?

Thanks Much from an Old Newbie!

Best Regards, Tony
 
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  #2  
Old 04-06-09, 03:44 PM
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You didn't give us any numbers to go by, so while you get the numbers for the Pros, check the kill switch to verify it's on & not kinda hanging in between on & off. Work it a couple of times. Make sure the plug is grounded to a metal part of the engine & not plastic when checking for spark... If you can remove the killwire from the coil & you still have no spark, You will probably need a new ignition module, but post some numbers for the Pros... Roger
 
  #3  
Old 04-06-09, 07:12 PM
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thanks Roger!

Of Course, Name ,Rank & serial #!



Will Do!

Best Regards, Tony
 
  #4  
Old 04-06-09, 08:29 PM
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I agree...take the kill wire off the coil and if still no spark, you need a new coil.
 
  #5  
Old 04-07-09, 04:46 AM
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Originally Posted by hopkinsr2 View Post
You didn't give us any numbers to go by, so while you get the numbers for the Pros, check the kill switch to verify it's on & not kinda hanging in between on & off. Work it a couple of times. Make sure the plug is grounded to a metal part of the engine & not plastic when checking for spark... If you can remove the killwire from the coil & you still have no spark, You will probably need a new ignition module, but post some numbers for the Pros... Roger
Okay...Numbers as they appear on the machine:

Displacement-25cc
Family-2hcps 0254AA
UT 20769
s/n AE1621431 06-02

I'll pull it apart when I get off the job today.Is there any way to test the ignition module or should I just buy a new one and put it in while I have it open?

Thanks again,Boys!
 
  #6  
Old 04-07-09, 06:17 AM
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The best test for an ignition coil is removing the wire(s) going to the kill switch at the coil. Most small engines will run with the kill circuit open & stop when you ground it. If you disconnect the kill wire & you have no spark, than it's a coil.. If you do have spark, check the switch & kill wire for a short... Roger
 
  #7  
Old 04-07-09, 02:09 PM
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Thanks for the Rapid comeback...Again!

Gonna choke some grub an' hit the garage(BRRR) afterwards.

I'll Be Back!:

Thanks again! Tony
 
  #8  
Old 04-09-09, 05:09 AM
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Okay...Can someone out there tell me how to get at the coil/ignition module?

I can see this is gonna' take more than 2 beers!

Thanks!
Tony
 
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