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Homelite weed eater won't start


Browndav's Avatar
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06-02-10, 02:34 PM   #1  
Homelite weed eater won't start

I have a 25cc Homelite Weed Eater that was never the easiest to start, and just recently decided it won't start. Before when it started it would run just fine.

Engine plate says: XH2XS.0254RA

So far I have:
-Removed carb, took the needle valve out, and soaked everything in some chem dip for a few hours. Used the air compressor to blow all the passages out afterwards. The gaskets looked fine when I had them apart.

-Priming bulb sprung a leak so I replaced it; when priming it does circulate gas, then stiffens up as the bowl fills up.

-I don't see how to get the filter out of the tank, so I hit it with carb cleaner & compressed air from both sides. Both fuel lines are not restricted and pliable.

-Compression is right at 90psi with throttle open or closed.

-Gas is brand new (from yesterday) and ethanol free. The mixture is 32:1.

-New spark plug - with the plug out and resting on the the engine body I do get spark; can't tell if the spark is good or not though.

-Spark arrestor and muffler are not restricted.

What am I missing? Only other thing I haven't checked is if the spark is at the wrong time (is that even possible?)

Any ideas would be appreciated Beer 4U2

 
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BFHFixit's Avatar
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06-02-10, 02:51 PM   #2  
Replace the carb diaphragms. No holes does not = ok

 
Browndav's Avatar
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06-02-10, 03:58 PM   #3  
Alrighty, after a few trips back and forth to the shed, I figured out it has a Zama H39A carb on it, and takes RB-29 or GND-18 kits.

Other than the RB-29 including the needle valve, are they otherwise the same? They have some different gaskets, but I think the ones I need are in both.

(on ebay)
RB-29

GND-18

 
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06-02-10, 04:20 PM   #4  
GND-18 looks to be it. You could prolly find it locally, save time n shippin n such.

 
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06-03-10, 12:13 PM   #5  
The local small engine shop had RB-29 in stock, so I picked that up.

Got it all installed, and the weed eater works again

There was one big difference I saw between the old and new gasket wear-wise. Apparently it was enough to make a difference.
Thanks Beer 4U2

 
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