SRM-210 older model with the double ring piston and no spark arrestor in the exhaust.
Condition:
Starts up as easy as my PAS-266 and after operating for about 20-30 minutes in thicker grass it will start to bog down a bit. I can fix this one of two ways, 1. quickly rotate the trimmer 90 degrees as if I was going to edge with it and then back to normal position and the RPM and power will come back 2. loosen the gas cap.
Eventually after 45 minutes to an hour of trimming the rotating fix doesn't work very well. If I loosen the gas cap after about the same amount of time of operating 'the fix' will stop working and the trimmer will start to bog down until I re-tighten the gas cap.
Here is what has been done to the trimmer (the bogging issue was an issue before and after these repairs have been performed for miscellaneous reasons)
- new carburetor
- all new gaskets/seals (intake, crankcase, crank seals, head gasket)
- was told that it got a new vent/fuel lines and filter with the carburetor replacement
- checked by applying vacuum the vent actually allowed air into the fuel tank
- checked for carbon build up on the exhaust port
- new upper piston ring
I'm quite perplexed because I figure if it was a air leak that all the gaskets/seals being replaced would have solved it and if the vent was the problem, why does leaving the gas cap loose only work for so long until it needs to be re-tightened?
Condition:
Starts up as easy as my PAS-266 and after operating for about 20-30 minutes in thicker grass it will start to bog down a bit. I can fix this one of two ways, 1. quickly rotate the trimmer 90 degrees as if I was going to edge with it and then back to normal position and the RPM and power will come back 2. loosen the gas cap.
Eventually after 45 minutes to an hour of trimming the rotating fix doesn't work very well. If I loosen the gas cap after about the same amount of time of operating 'the fix' will stop working and the trimmer will start to bog down until I re-tighten the gas cap.
Here is what has been done to the trimmer (the bogging issue was an issue before and after these repairs have been performed for miscellaneous reasons)
- new carburetor
- all new gaskets/seals (intake, crankcase, crank seals, head gasket)
- was told that it got a new vent/fuel lines and filter with the carburetor replacement
- checked by applying vacuum the vent actually allowed air into the fuel tank
- checked for carbon build up on the exhaust port
- new upper piston ring
I'm quite perplexed because I figure if it was a air leak that all the gaskets/seals being replaced would have solved it and if the vent was the problem, why does leaving the gas cap loose only work for so long until it needs to be re-tightened?
Last edited: