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Old 06-30-2012, 07:45 PM
GlynnC GlynnC is online now
LawnSite Senior Member
Join Date: Sep 2009
Location: Nashville Tennessee
Posts: 689
Originally Posted by GlynnC View Post
Hope the kit works for you and starting problems are solved. I just acquired another Echo 210 from my brother-in-law (did some trading--I think he won). The trimmer started for me when I tried it at his house. Installed a new grommet, fuel lines, fuel filter, and cleaned 6 or 8 years of oil/dirt crude off it--now it will only start when I put gas in the sparkplug hole. I consider myself a fair mechanic on trimmers. My 1st thought was gas lines reversed--compared them to my other 210. Put a carb gasket & diaphram kit in--still same problem. Tomorrow, I'm going to switch carbs between the trimmers--it's very dry here so not much mowing going on--have some extra time.
Okay, I'm a dummy--put another carb on it this morning and it worked great--definitely a carb problem. Went on the Zama site, looked and read about their rotary carb--then thought about everyting I had done--okay here's where I'm a dummy. I had removed the plug so I could adjust the high speed jet--or so I thought. This plug was a small plastic cylinder with an o-ring--definitely different than the kind that need to be drilled out. As it turns out, this Zama RB rotary carb has a fixed jet in it, and the plug I removed was allowing it to suck air straight from outside rather than fuel. Put the plug back in, changed the carb out for about the 10th time, and it starts and runs.

Okay, another lesson learned. Good thing I was working on my own equipment since I now have about 20 hours into this "simple" maintenance job of replacing tank grommet and fuel lines and filter--and what I thought was going to be a tweak of the high speed jet.
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