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Yardman 3.5 HP Edger (256-599-401) - Won't Start

7516 Views 12 Replies 5 Participants Last post by  dlevans
I have a Yardman 3.5 HP Edger (256-599-401) that won't start. I have confirmed that I have spark as the engine will fire briefly if you spray a little starting fluid in the carb. I have also replaced the sparkplug to no avail... I have confirmed that I am getting gas to the carb from the tank. I removed the bowl from the bottom of the carb and sprayed the heck out of the carb (inside and out).

I suspect that the carb needs further attention (rebuilt because of varnish?), but I could use a little guidance to confirm my suspicion and how to proceed. I am reasonably mechanically inclined but I have never rebuilt a carb.


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Thank you for the guidance.

Tomorrow night I will remove the bowl and clean the holes in the bolt. I will be honest... I didn't pay any attention to the bolt and it's holes when I removed it prior to making my original post.
First... Thank you to everyone for your help and suggestions.

The bowl nut is as 30yearTech described. All 3 holes were clear. In regards to gas flow: I do have gas to the bowl. The gas flows when the float is down and stops when it it is raised.

Bassed on the info provided so far, it appears that teh carb needs to be rebuilt. I have never rebuilt a carb. Is it difficult? Where would I obtain a rebuild kit? The local Ace Hardware where they do similar repairs?

How sensitive are the settings/positions of the 2 screws on the side of the carb. The one near the top appears to be a throttle stop, and I am assuming that the other affects the flow of gas into or through the carb.

I would like to thank everyone for their help - Thank You. :thumbsup:

This evening I removed the carb from the engine and sprayed the daylights out of it (top to bottom, bottom to top, left to right, right to left, inside to outside and outside to inside) and re-assembled everything. I also drained and refilled the tank with fresh gas. After spraying a little starting fluid in the carb and giving a single tug on the starter cord the engine sprang to life.

Again, thank you to everyone for your guidance. :)
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