Quick Answer: Why Does My Chainsaw Run Then Stop?

Can a chainsaw get too hot?

Chainsaw engines run at high temperatures, usually in the summer, so they can quickly overheat.

If dust, wood chips or other material blocks these systems, the engine will start to overheat.

The engine also needs to expel hot air, so the muffler must also be kept clean to keep the engine from overheating..

What happens when a chainsaw overheats?

If you use it too much while it’s overheating, it’s possible you may burn out the engine or pistons causing you to have a broken chainsaw that will either need to be repaired or replaced. Following these tips can help to keep your chainsaw running smoothly for years to come.

Can you clean a carburetor without taking it apart?

You can clean the outside of the carb without disassembly but the important stuff to clean is on the inside and for that it must be disassembled. There was a time when you could buy good quality carb cleaner to soak your disassembled carb in to clean all of the passages but not any longer.

Can you spray carb cleaner into air intake?

Spraying carb cleaner into the air intake bypasses the internal fuel passageways. Spraying carb cleaner into the carb bowl vent (to atmosphere) should be more effective.

Why does my engine die when I give it gas?

A dirty carburetor or something is restricting fuel flow. When you hit the gas pedal, the throttle plate opens, allowing a lot of air in, the engine vacuum plunges, and without an increase in the amount of fuel, the fuel-air mixture is simply too lean for the engine to continue running.

Can you use wd40 to clean a carburetor?

Aerosolized and applicable to nearly any carburetor, WD-40’s fast-acting carb cleaner uses a solvent formula to break away stubborn carbon contaminants, leaving you with a clean carburetor. WD-40’s blend of cleaners can be used on any unpainted metal parts.

Can you clean a chainsaw fuel filter?

Once you’ve got the right oil, it’s important to mix the fuel properly. … A dirty air filter can cause all sorts of problems, such as loss of engine power, excessive fuel consumption, and excessive wear to engine parts. Brush the air filter gently with a soft brush or wash it in warm soapy water then dry it.

Why does my chainsaw dies when I give it gas?

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 2 cycle engine stall when I give it gas?

Air Filter When the fuel has passed through the fuel filter, it enters the carburetor where it’s mixed with air. If your air filter is clogged, it will literally suffocate the engine when you rev the throttle.

Is it bad to run an engine with the choke on?

Leaving the choke on while operating will result in excessive fuel consumption, irregular engine power performance and eventually may even damage the engine. … Some engines utilize a manual fuel primer bulb to enrich the ratio of fuel in the fuel air mixture for initial engine starting.

Why does my engine only run with the choke on?

An engine that will fire and run with the choke closed but dies when the choke is opened likely has debris at least partially blocking the fuel passages in the carburetor. In this condition the closed choke provides enough extra fuel to enter the engine to overcome the lack of fuel flowing through the other passages.

Why does my chainsaw only runs on choke?

If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. However, if the engine is plugged, the choke will pull more fuel through the carburetor’s idle circuit and allow it to run. … When the choke is turned off, the engine will die.

Why does my chainsaw cut out when hot?

When your chainsaw quits after it gets hot, you either have a problem with gas flow being restricted into the engine or with the spark. This is a common occurrence on older-model chainsaws. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring.

How do you adjust the high and low on a chainsaw?

Carburetor Adjustment ProcedureBefore you start the saw, locate a small flat-bladed screwdriver. … Begin by checking the saw’s air filter. … Check the fuel level. … Start the engine and warm it up. … Begin by setting the idle speed. … Set the low speed fuel adjustment. … Go back to step (4) and reset the idle speed.More items…