Stihl MS 661 Problems and Fast Solutions

If you’re a chainsaw user, then you know that the Stihl MS 661 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 661 problems and offer some quick and easy solutions.


Stihl MS661 Magnum: Failure to start

The Stihl ms 661 Magnum chainsaw is a powerful tool that can help you get the job done. However, like any other tool, it can have problems from time to time. In this article, we’ll talk about some of the common ms 661 Magnum chainsaw problems and how to solve them quickly and easily.

If your ms 661 Magnum chainsaw is not starting, there are a few things you can do to try and fix the problem. First, check to make sure the spark plug is properly installed and working. Next, make sure that the fuel supply is adequate and clean. Finally, make sure that the chain is properly lubricated. If all of these checks fail to remedy the issue, then you may need to take your chainsaw into a professional repair shop for further diagnosis or repair.

Stihl MS661 Magnum: Poor acceleration

If you notice that the chain on the chainsaw has poor acceleration, then the reason for that might be an over-tightened chain. The chain also may not get sufficient oil to run smoothly and accelerate quickly on the blade. Here’s how to properly tension the chain and fix poor acceleration:

  1. Locate the tensioning screw on the side of your chainsaw. It should be the one in between the two blade-tightening bolts.
  2. Turn the tensioning screw counterclockwise, and loosen it until the chain on the underside of the blade starts to hang freely.
  3. Now start tightening the screw in a clockwise direction until there is very little chain sag left on the underside of the blade.
  4. Using a pair of gloves, feel how loose or tight the chain is and adjust as needed.
  5. Try and see if this solves the chain acceleration problem.

Stihl ms 661

Stihl MS661 Magnum: Chain not rotating

To fix this problem, you can do:

  1. The first thing to do is check and ensure that the chain brake is not engaged.
  2. If the problem persists, proceed to disassemble and remove the chain.
  3. Start loosening the chain tension by turning the tensioner screw in a counterclockwise position.
  4. Unscrew and remove the blade-tightening screws and the sprocket cover.
  5. Remove the chain and the blade together using a pair of gloves.
  6. Clean the bar nose sprocket with an alcohol-based solvent.
  7. Reassemble everything in reverse order and try how the chainsaw operates.

Stihl MS661 Magnum: Failure to reach the highest speed

Various causes are preventing the chainsaw from reaching its maximum speed. Sometimes, it could be a problem with one of the machine’s components. There could be a problem with the spark arrestor. This component is what the name says. It keeps sparks trapped inside themachine and makes them unable to leave the saw in the form ofexhaust.

When this component is not clean, the engine will stall or bog down and fail to reach its maximum speed. You won’t need anything other than an old toothbrush to clean the arrestor screen. You can find the arrestor’s screen right behind the chainsaw’s muffler.

Stihl MS661 MagnumP: A burning smell is released when cutting

If you start noticing a smell of burnt wood when you cut with the chainsaw, then dull blades are the most common reason for this problem. Insufficient lubrication can also be the reason for burning the wood, as the blades get hot and dull much more quickly.

You can do:

  1. The first thing to do is try to sharpen the chain blades using the right technique. Make sure to wear gloves at all times.
  2. After you’ve sharpened the blades, check to ensure enough oil is in the lubricating tank.
  3. Ensure the oil feeding rate is properly calibrated so that enough oil is sent to lubricate the chain.
  4. Check the chain’s tension and tension it properly if needed, following the steps in the previous section.

Stihl MS661 MagnumP: The chainsaw idles erratically

When your chainsaw’s idle is not consistent, the idle speed will rise and fall without your intervention. There could bevarious issues leading to this condition.There could be something as complicated as an iced-up carburetor or as simple as an improper adjustment.

You can quickly fix this issue if the idle adjustment is not set correctly. All that is required is to turn the low-speed screw counterclockwise. You will not stop until your saw’s engine properly starts and keeps accelerating without lagging. When you turn the low adjustment screw, keep that in mind to move it slightly. It would help if you turned on the saw to see the outcome of this change. If nothing happens, you will have to keep trying.

If the carburetor is iced up, you can notice that the engine is shaking. This is an issue of insufficient airflow inside the machine. You can open the throttle to let more air in to adjust to thissituatian.
Also,you will have to let the engine warm up till it reaches 10 degrees Celsius. But make sure to makethewarmup process gradual.


When did the Stihl MS 661 Magnum come out?

The Stihl MS 661 Magnum was first released in 2002. It quickly became one of the most popular chainsaws on the market, thanks to its powerful engine and durable construction.

What CC is a Stihl MS 661 Magnum?

Stihl’s MS 661 Magnum is a gas-powered chainsaw that has been designed for professional use. It has a powerful engine and an ergonomic design, which makes it ideal for cutting hardwoods and other types of wood. The Stihl MS 661 Magnum is a Chainsaw that has a CC of 98. This saw is a great choice for those who need a powerful and durable saw.

How many horsepower does a Stihl MS 661 Magnum have?

The Stihl MS 661 Magnum is a high-powered chainsaw that is popular among professionals. It is a powerful tool that can make quick work of large cutting jobs. So, how much horsepower does this chainsaw have?

The Stihl MS 661 Magnum has a powerful engine that delivers 100 horsepower. This makes it one of the most powerful chainsaws on the market. With this much power, the Stihl MS 661 Magnum can easily handle large cutting jobs.

How much does a Stihl MS 661 Magnum weight?

The Stihl MS 661 Magnum is a powerful and versatile snowblower that can handle most jobs. It weighs about 220 pounds, so it might be a bit heavy for some people to lift into the yard. However, the MS 661 is well-built and delivers powerful performance.

What chain does the Stihl MS 661 Magnum have from the factory?

The Stihl MS 661 Magnum is a gas-powered chainsaw that comes with a factory chain. Many people choose to replace the factory chain with a higher quality one. There are many different chains available on the market, so it is important to choose one that is compatible with the saw.

How big of a bar can you put on a Stihl MS 661 Magnum?

The Stihl MS 661 Magnum is a powerful saw that can handle a lot of work. It can take a variety of different sized bars, but the most common size is the 24-inch bar. This saw can also take a 36-inch bar, but it is not recommended for regular use.

How much is a Stihl MS 661 Magnum?

If you’re looking for a powerful and durable chainsaw, the Stihl MS 661 Magnum is a great option. It’s a professional-grade saw that can handle tough cutting jobs. But how much does it cost?

The MS 661 Magnum is one of the most expensive saws in the Stihl lineup. It has a suggested retail price of $949.95. But you can often find it for less than that if you shop around. The MS 661 Magnum is a great choice for anyone who needs a powerful and durable chainsaw. But it’s important to know how much it costs before you buy.

Stihl ms 661

Where to get Stihl MS 661 Magnum for sale?

There are a few different places that you can get your hands on a Stihl MS 661 Magnum for sale. One of the best places to check would be your local hardware store or garden center. They will usually have a wide selection of different models and brands to choose from.

Another great place to look would be online. There are a ton of different online retailers that sell outdoor power equipment, and you should be able to find a Stihl MS 661 Magnum for sale through one of them.

Finally, you could always check out a classifieds website like Craigslist or eBay. Sometimes people will sell their used outdoor power equipment on these websites, so you might be able to find a good deal on a Stihl MS 661 Magnum.

User Guide

How to reset the MS 661 Magnum?

If you need to reset the Stihl MS 661 Magnum, there are a few things you’ll need to do. First, find the spark plug and remove it. Next, locate the flywheel and remove it. Finally, remove the air filter and clean it. Once you’ve done all of this, you should be able to reset the Stihl MS 661 Magnum and get it running again.

How to calibrate a MS 661 Magnum?

If you’re looking to get the most out of your Stihl MS 661 Magnum, it’s important to keep it properly calibrated. Doing so will ensure that your saw is running at peak performance, and will help extend its life. Here’s a quick guide on how to calibrate your Stihl MS 661 Magnum.

  1. Start by checking the air filter. A dirty air filter can restrict air flow and cause the engine to run lean. Replace the air filter if it’s dirty.
  2. Next, check the spark plug. A fouled or damaged spark plug can cause the engine to run rich. Clean or replace the spark plug as needed.
  3. Adjust the carburetor if necessary. The carburetor controls the air/fuel mixture. If it’s not adjusted properly, the engine will run lean or rich.
  4. Finally, check the Ignition timing. If the Ignition timing is off, it can cause the engine to run lean or rich. Adjust the Ignition timing as needed.

following these simple steps will help ensure that your Stihl MS 661 Magnum is running at peak performance.

How to adjust the carburetor on a MS 661 Magnum?

If your Stihl MS 661 Magnum is running too lean or too rich, you may need to adjust the carburetor. This process is relatively simple, but it’s important to follow the steps carefully so that you don’t damage the engine.

First, you’ll need to locate the carburetor. On the Stihl MS 661 Magnum, it’s located under the fuel tank. Once you’ve found it, you’ll need to remove the air filter cover and the air filter itself.

Next, you’ll need to locate the idle adjustment screws. These are usually located on the side of the carburetor. Once you’ve found them, you’ll need to turn them clockwise or counterclockwise to adjust the mixture.

If you’re still having trouble, you may need to clean the carburetor. This can be done with a carburetor cleaner or by taking the carburetor apart and cleaning it with a brush. Once you’ve made the necessary adjustments, you can put the air filter cover and air filter back on. Be sure to test the engine before you put it back into use.

How to replace bar oil pump for MS 661 Magnum?

If your Stihl MS 661 Magnum is leaking bar oil, it’s likely that the bar oil pump needs to be replaced. Here’s how to do it:

  1. Remove the bar and chain from the saw.
  2. Unscrew the bar oil cap and set it aside.
  3. Unscrew the screws that hold the bar oil pump in place.
  4. Pull out the old bar oil pump and replace it with a new one.
  5. Screw the new bar oil pump into place and screw on the bar oil cap.
  6. Put the bar and chain back on the saw.

Your Stihl MS 661 Magnum should now be pumping bar oil correctly.

How to adjust the chain tensioner on MS 661 Magnum?

If the chain tensioner on your Stihl MS 661 Magnum is not adjusting the chain properly, there are a few steps you can take to adjust it. First, make sure that the tensioner cable is connected to the tensioner and that it is properly tightened. Next, loosen the screw on the side of the tensioner until it just begins to move, then tighten the screw back up. Finally, move the tensioner so that it’s in between two of the barbs on the chain and tighten both screws.

Stihl ms 661

The End

In conclusion, the Stihl ms 661 may have some problems that need to be fixed, but there are also ways to fix them fast. If you experience any issues with your machine, be sure to take it to an authorized dealer for repairs or replacements. Be sure to read up on the various troubleshooting tips available online so you can get your machine back up and running as quickly as possible.