- Joined
- Nov 29, 2009
- Messages
- 7,268
Ok so I bought this trimmer brand new and noticed that on really hot days after the motor got good and hot from running 20 minutes the trimmer would lose power and didn't have any balls at all, so I was thinking it was probably set too lean. It was also really hard to control the throttle and the off idle acceleration was a bit boggy. Basically I re adjusted the carb so their was no bogging at all. I discovered the hi speed screw took about 3 turns to get it to lean out and lose rpm. Then after that I backed off until it ran the highest rpm and then I turned it about another 3/4 turn out or so. It basically runs like a champ now, but looking at a few manuals, it appears that 3 turns out is the factory setting. Well this thing burns a ton of fuel running that far out and has no power. The way I have it set now, which I basically just set it by ear is has good power, lots of low end torque and good fuel economy. My concern is how do I know when it's running too lean on the hi side? I've heard they will lose power like I described when hot, so I assume as long as it has good consistent power then it's ok? I did back it off about 1 full turn from when I leaned it out, so it shouldn't be too lean right? Is the factory setting just a starting point, then you make adjustments from there? I'm happy with how I have it tuned now, but I just want to make sure I'm not harming the engine.
