Technical > Home Improvement > 2 stroke help

reply to Subaru

Re: 2 stroke help

It works well ran my generator for 8 hours straight with no issue I should go drain the Carb now

reply to Subaru
Good onya for the DIY carb clean. I like your style. Beats paying someone $100 to do the same.

As you may well know, those brass screws with the little bitty holes in them are jets. They are what regulate the amount of fuel that later up the pathway mixes with the intake air to allow correct combustion. It doesn't take much kack to block a jet. The hole size is (generally speaking) an ultra precise opening designed to allow just the correct amount of fuel to pass. It appears you may have one for idle, and another for operating RPMs. Not sure.

From the yawn department - when tuning a carburetor equipped motorcycle, if we increase air to the motor via a low restriction air filter and / or drilling the air box, and adding less restrictive exhaust piping, we usually introduce larger than factory fuel jets to compliment the increased air flow. Increased horsepower is often the result when stringent very lean for world emissions specs are the factory standard. A dyno run is good to prevent over fueling, although some seem to enjoy that over fueling condition and the increased horsepower it can offer. I got lucky with my bike and ended up with a perfectly flat torque curve along the full RPM range, and perfect fuel to air. Not bragging, for I used a calc app a buddy wrote. Kudos go to him.

On portable two strokes used in multiple operating positions, I often find the fuel line kinked and offering a no / low fuel condition. An example is a plastic fuel tank on a Stihl leaf blower with the fuel filter attached to a length of fuel line inside the fuel tank. I frequently need to turn the blower upside down when blowing out rain gutters with a long outlet pipe. Every now & then the fuel line will get a kink in it while doing this. A quick shake in the fuel line down hill position usually cures the problem.

most say you can clean the jet with a wire but you have to watch to make sure you don't change the size.. Having said that I don't know what wire size would fit in the jet.

Wood toothpick maybe? Never tried it.

The toothpick I have are too fat lol

Nylon bristle off a tooth brush.

reply to Subaru
Porcupine quill

Just be careful during the procurement phase.

haha got it

reply to Subaru
Seafoam is great stuff --- I use that or Sta-bil.

Any fuel I put in my equipment I always add a stabilizer --- and ensure I run them out of gas if they'll be stored for more than a few weeks. This will prevent the 'gum' from ever building up in the first place.

sta-bil and seafoam.
I learned it here, great combination.