If you’re a Stihl MS 400 owner, then you know that this chainsaw is one of the best on the market. But like any piece of machinery, it’s not without its problems. In this article, we’ll take a look at some of the most common Stihl MS 400 problems, as well as provide some troubleshooting tips and guides.
Stihl ms 400 Problems
Not to start
If your Stihl MS 400 chainsaw won’t start, there are several things you can check to troubleshoot the issue.
- First, make sure that there is fresh gasoline in the tank and that the fuel filter is clean.
- Next, check the spark plug to see if it is fouled or damaged. If the spark plug looks good, then check the air filter to see if it is dirty or clogged.
- Finally, if the saw still won’t start, you may need to take it to a qualified technician for further diagnosis.
If your Stihl MS 400 is making loud noise, the first thing you should do is check the air filter. If the air filter is dirty, it can restrict airflow and cause the engine to run louder than normal. Clean or replace the air filter as needed.
If the air filter is clean and the engine is still making loud noise, the problem may be with the muffler. Check to see if the muffler is loose or damaged. If so, tighten it or replace it as needed.
If the muffler is in good condition and the engine is still making loud noise, the problem may be with the piston or cylinder. If this is the case, you will need to take the chainsaw to a qualified repair shop for service.
If your Stihl ms 400 comes with slow wheels, there are a few things you can do to speed it up.
One option is to adjust the tension on the chain. This can be done by loosening the screws that hold the cover on the guide bar. Once the cover is off, you can tighten or loosen the chain as needed.
Another option is to replace the sprocket on the saw. A larger sprocket will allow the chain to move faster, while a smaller sprocket will slow it down. You can also adjust the carburetor on the saw to change the speed.
Suddenly dies while cutting
If your Stihl MS 400 suddenly dies while cutting, there are a few potential causes. The most common cause is a loss of spark, which can be due to a dirty air filter, bad spark plug, or loose wiring. If the saw is getting fuel but not firing, the problem could be a clogged carburetor.
Another possibility is that the saw is overloading and shutting down to prevent damage. If your saw is suddenly dying, check these potential causes and see if you can get it running again.
Engine loses power gradually
If you own a Stihl ms 400 chainsaw, you may have noticed that the engine gradually loses power over time. This is a common problem with these saws, and there are a few things you can do to fix it.
- The first thing you should check is the air filter. If the air filter is dirty, it can restrict air flow to the engine and cause it to lose power. Clean or replace the air filter as needed.
- Next, check the spark plug. If the spark plug is fouled, it can prevent the engine from starting or cause it to run poorly. Clean or replace the spark plug as needed.
- Finally, check the fuel mixture. If the fuel mixture is too rich, it can cause the engine to lose power. Adjust the fuel mixture as needed.
If you follow these steps and still have problems with your Stihl ms 400, take it to a qualified repair shop for further diagnosis.
FAQs and Guides
What CC is a Stihl ms 400?
The CC of a Stihl ms 400 is 36.3 cubic centimeters. This is a mid-sized saw that is great for general use around the house or farm. It is also a very popular model for sawyers who use it in their business.
How many horsepower does a Stihl ms 400 have?
The Stihl ms 400 is a powerful chainsaw that is capable of delivering 3.3 horsepower. This makes it ideal for a variety of tasks, such as cutting down trees or trimming branches. When using this chainsaw, it is important to be aware of its power and to use it safely.
How much does a Stihl ms 400 weight?
The Stihl MS 400 is a medium sized chainsaw that weighs in at around 11.5 to 12.5 pounds. This makes it a great choice for those who need a little more power than what a smaller saw can offer, but don’t want to deal with the weight and bulk of a larger saw.
What chain does the Stihl ms400 have from the factory?
The Stihl ms 400 has a 3/8″ Picco Micro mini 3 saw chain from the factory. This is a low-kickback saw chain that is ideal for use on smaller saws like the Stihl ms 400.
How big of a bar can you put on a Stihl ms400?
The size of the bar you can put on a Stihl ms 400 depends on the model of the saw. Some models can accommodate bars up to 36 inches long, while others can only accommodate bars up to 24 inches long. Check your saw’s model number to be sure.
What’s the Stihl ms 400 max bar length?
The Stihl max bar length is 36 inches. This length is ideal for cutting through large branches and trees. It is also the perfect length for maneuvering around obstacles. The Stihl max bar length is also ideal for cutting through thick brush and undergrowth.
How much is a Stihl ms 400?
The Stihl MS 400 is a professional-grade chainsaw that is designed for heavy-duty use. It is one of the most powerful chainsaws on the market, and it is priced accordingly. The MS 400 has a suggested retail price around $1100.
Where to find Stihl ms400 for sale?
There are a few different places that you can find Stihl ms 400 for sale. One option is to go directly to the Stihl website and search for retailers in your area. Another option is to check out your local home improvement store or garden center. You may also be able to find them for sale online through a variety of different retailers.
How to reset the Stihl ms 400?
If your Stihl ms 400 chainsaw is not functioning properly, you may need to reset it. To do this, follow these steps:
- Turn off the chainsaw and remove the spark plug.
- Remove the air filter and clean it.
- Remove the fuel tank cap and unscrew the fuel line from the carburetor.
- Remove the carburetor bowl and clean it.
- Remove the spark arrestor screen and clean it.
- Reinstall all of the parts and turn on the chainsaw.
How to calibrate a Stihl ms 400?
To adjust the carburetor on a Stihl MS 400, you’ll need a carburetor adjustment tool and a small Phillips head screwdriver.Begin by removing the air filter cover and the air filter itself. With the air filter removed, locate the carburetor adjustment screws. These are typically located on the side of the carburetor.
Using the carburetor adjustment tool, turn the screws clockwise to richen the mixture and counterclockwise to lean it out. It’s best to start with small adjustments and work your way up until the saw is running smoothly.
Once you’ve got the carburetor dialed in, reattach the air filter and air filter cover. And that’s it! With a few simple adjustments, you can have your Stihl MS 400 running like new again.
How to adjust the carburetor on a Stihl ms400?
If your Stihl ms 400 is running too lean or too rich, you may need to adjust the carburetor. To do this, you will need a carburetor adjustment tool. You can find these at most hardware stores.
Start by removing the air filter cover and the air filter. Then, locate the carburetor adjustment screws. These are usually located on the side of the carburetor. Using the carburetor adjustment tool, turn the screws clockwise to lean the mixture or counterclockwise to richen the mixture. Be sure to turn both screws the same amount. Once you have the mixture where you want it, replace the air filter and air filter cover.
How to adjust the chain tensioner on Stihl ms400?
Adjusting the chain tensioner on the Stihl ms 400 can be a difficult task, but with some simple steps, it can be done without much hassle.
- First, loosen the screws that hold the tensioner in place on the frame of the machine.
- Next, remove the old chain tensioner and place it in front of you so that you can see what type of tension it uses.
- If you are using a standard hex key, turn it to fit the hole on top of the new chain tensioner.
- If you are using a ShimanoChainTensioner, you will need to take special care when turning it as it is not always labeled in this way.
- Once you have installed the new chain tensioner, tighten all of the screws to their proper positions.
While the Stihl MS 400 is a powerful and versatile saw, it is not without its problems. Users have reported a number of issues with the saw, including difficulty starting it, the chain coming off, and the chain getting stuck. However, with a little troubleshooting, these problems can be easily resolved. With proper care and maintenance, the Stihl MS 400 can provide years of dependable service.