Weed trimmer performance vs ambient temp.

[2K2AcuraTL]

I have a Husq 128CD weed trimmer that needs a slight adjustment, its boggs and you squeeze the trigger.
Simple YouTube search and i am in a position to try and adjust the the carb..

Forecast temp for today / tomorrow is ~ -2C / 30 F... wondering if trying to use / adjust anything on this trimmer will be affected with the low air temp..?
I could wait until spring, but my OCD wont let me.....
J.

 

[ragtoplvr]

cold air leans the mixture on carb. some or a lot of bogging is normal in the extreme cold. Adjusting at this temp will probably make it a little rich when it is hot. Get the tools, expect to do it again in the summer. My leaf blower takes about 5 minutes to warm enough to work sort of well in the cold.

Rod

 

[Wylie6G72]

My Troybilt was adjusted lean from the factory, and ran fine new, but ran a little worse each season. It would bog on a 100 degree day, and finally became almost un-usable after 7 years. I finally had to adjust the high speed screw to give it more gas. It's like brand new again. Be warned that you'll probably have to cut yourself a notch into the adjustment screws in order to move them with a screwdriver. Mine were solid. The Dremel fixed that.

 

[Barkleymut]

the temp will not matter much. I used to run 2 cycle leaf blowers around freezing all the time and could only tell that it took an extra minute to get to regular operating temp where they generally ran just a bit smoother.

 

[2K2AcuraTL]

My Troybilt was adjusted lean from the factory, and ran fine new, but ran a little worse each season. It would bog on a 100 degree day, and finally became almost un-usable after 7 years. I finally had to adjust the high speed screw to give it more gas. It's like brand new again. Be warned that you'll probably have to cut yourself a notch into the adjustment screws in order to move them with a screwdriver. Mine were solid. The Dremel fixed that.

Thanks for the input..my Husq uses a spline tool, which I have.. so im in good shape there..

 

[2K2AcuraTL]

cold air leans the mixture on carb. some or a lot of bogging is normal in the extreme cold. Adjusting at this temp will probably make it a little rich when it is hot. Get the tools, expect to do it again in the summer. My leaf blower takes about 5 minutes to warm enough to work sort of well in the cold.

Rod

Thats what i was thinking.. but to what degree, or will it really make a difference...

 

[ragtoplvr]

Thats what i was thinking.. but to what degree, or will it really make a difference...

Yes, it makes a difference. So does altitude, humidiy, oil ratio, and ethanol content. I noticed, tuning a chain saw that was used in the winter, to where it started and ran well. Then in the summer would 4 cycle even under load, it needed to be leaner for peak power. Gas heat, what a concept!!!!!!!

Rod

 

[MrPlow]

Slightly OT, but I went full battery power for this and many other reasons. Weed trimmers can go a decently long time with a single charge on a 5 amp hour 56v battery.

I do property maintenance and use 100% battery blowers, trimmers, mowers, etc. I got sick of messing with petrol units being finicky with all sorts of variables and wasting time starting or maintaining them. Electric is pretty expensive for high-quality battery powered units, but they either work or they don't. I've been getting 5 years of heavy use out of my battery packs before they don't hold enough of a charge. I can toss the tools in a shed for the winter and they fire right up in the spring. The added cost of battery power is probably offset by the time saved not messing with 2 stroke BS. LOL

It's also nice not smelling like I swam in gasoline for 8 hours straight. Breathing 2 stroke exhaust can't possibly be good in the long run.

 

[Kamele0N]

It's also nice not smelling like I swam in gasoline for 8 hours straight. Breathing 2 stroke exhaust can't possibly be good in the long run.

You are not "greener" because of that....you have just transfered that problem to someone in 3rd world....who is breathing toxic fumes while mining ore for your batteries

 

[MrPlow]

You are not "greener" because of that....you have just transfered that problem to someone in 3rd world....who is breathing toxic fumes while mining ore for your batteries

I am perfectly fine with that! It's for my personal sake, not so much the environment. Plus, the guy at the oil drilling platform getting caked head to toe daily in crude probably has it worse than the lithium mining guy. Although, for clients with vegetable gardens and edible fruit trees, it's nice not blasting them with a bunch of petrol chemicals. I cringe when I see the other guys blowing nasty leaf blower exhaust all over really fancy organic gardens.

 

[Cujet]

Also keep in mind that these little carburetors don't have an accelerator pump to squirt a little fuel to prevent a bog. So, tuning the carb for "no bog" might result in a slightly over-rich condition at full RPM. I typically try to tune the carb to the highest RPM on my blowers and put up with a little bog. I tune my weed whacker a bit richer for instant throttle response. I rarely hold my weed eater wide open when trimming.

 

[2K2AcuraTL]

Also keep in mind that these little carburetors don't have an accelerator pump to squirt a little fuel to prevent a bog. So, tuning the carb for "no bog" might result in a slightly over-rich condition at full RPM. I typically try to tune the carb to the highest RPM on my blowers and put up with a little bog. I tune my weed whacker a bit richer for instant throttle response. I rarely hold my weed eater wide open when trimming.

excellent point... Thank-you