FAQ: How To Rebuild A Craftsman Chainsaw Carburetor?

What does H and L mean on a chainsaw?

The letters on the screws represent High (H), Low (L) and Idle (T). The H screw regulates the Air/Fuel mix during high RPMs, while the L Screw does the same during low RPMs. This adjustment screw is responsible for adjusting the chainsaws idle.

Does carburetor cleaner work?

Most carburetor cleaners do the work for you, no scrubbing required. Readily available and affordable. Most auto parts stores will carry a few brands of carburetor cleaner. Typically less than $20, carburetor cleaners are a cheap, efficient way to improve the overall performance of your vehicle.

How do you rebuild a carburetor?

Here’s what to do:

  1. Remove the carburetor and place it on your worktable.
  2. Read the instructions outlined in your rebuild carburetor kit.
  3. Unhook the accelerator pump and take the cover off.
  4. Wipe down all the carburetor’s parts with carburetor cleaner.
  5. Rinse all the parts in water and allow them to dry thoroughly.

Can you clean a chainsaw carburetor without taking it apart?

Run it and it should clean it as well as you can get it without taking it apart. I used it a while back on two saws that had set for two years and it worked on both. The small saw started after about ten pulls and would idle but rough so I shut it off and let it sit overnight.

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Why does my Stihl chainsaw keep dying?

An engine stalls when it’s getting too much or not enough fuel from the carburetor. Stihl chainsaw carburetors usually have three adjustment screws: one each for idle, low speed and high speed. If the saw is stalling when you pull the throttle trigger or it doesn’t reach its full power, adjust the high-speed (H) screw.

Why does my chainsaw not stay running?

The most common problems why a chainsaw does not stay running are: Spark Switch/Plugs. Bad Fuel. Blocked Carburetor.

Is it worth rebuilding a chainsaw?

Tree Freak. As long as you didn’t damage the plating in the cylinder, it should be worth rebuilding. I never fire up used saws until I made sure the fuel system is in good shape, the bearings and seals are tight, and there’s loose parts rattling around inside.

How hard is it to rebuild a carburetor?

While a carburetor is not particularly difficult to rebuild, there are many performance enthusiasts who shy away at the thought of disassembling and rebuilding, often choosing to simply buy a replacement instead. A carb kit will include the typical wear components, as well as new gaskets and seals.

Should I clean or replace carburetor?

Note: If the inside of the carburetor is corroded, it needs to be replaced. Even after cleaning, the corrosion will clog the jets and tiny orifices and restrict the flow of gas.

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