ryobi 825 trimmer won't start

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  #1  
Old 11-13-07, 02:22 PM
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ryobi 825 trimmer won't start

I have a 4 cycle ryobi 875 trimmer that has been very reliable. However, yesterday it wouldn't start unless I put gas directly into the carb. The bulb is working fine and gas is flowing into and out of the carb, but none is reaching the jet. I just blew everything out and put a new kit in assuming the diaphram was bad, but it still does the same thing. Any ideas of what to check?
Thanks in advance.
Pete
 
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Old 11-13-07, 07:07 PM
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So it starts when you put gas in the carb, but does it stay running, or just burn the gas off and die? If it stays running, I'd suspect the choke isn't working properly. If it dies after burning the prime of gas, then you have carburetor problems still.
 
  #3  
Old 11-14-07, 04:09 AM
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Sorry, didn't explain. Yes it just burns the gas then stops again. I know it is still a carb issue, just don't know what to look for.
Thanks
 
  #4  
Old 11-14-07, 07:34 PM
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There should have been a tiny, fine mesh screen in the rebuild kit, did you replace this? If not, yours is likely clogged shut with oil residue (from normal useage) and needs to be replaced. Otherwise, you may need to soak the carb in a bath cleaner to thoroughly clean it.
 
  #5  
Old 11-15-07, 07:26 AM
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Smile

I had the same problem with a ryobi,not starting,I removed the valve cover and check the clearences,found they needed adjusting,adjusted the valves,it it ran great.Check your operators manual for the valve clearences.Hope that helps.

Jerry
 
  #6  
Old 11-15-07, 11:44 AM
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Oh, yeah, four-stroke engine. You'll find no oil residue on the screen in the carburetor, perhaps though, you may need to soak the carb in a bath cleaner still. But, as jsouth, suggested, don't discount the valve clearances.
 
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