ToolsBros is reader-supported. When you buy through links on our site, we may earn an affiliate commission. Learn more.

Husqvarna 51 Chainsaw Review – Is It The Right One For You?


The Husqvarna 51 is a chainsaw that will allow you to take on the world of firewood, tree stumps and other wood-chopping projects. The saw’s powerful engine starts quickly with the flick of a switch. It has an automatic oiler for smooth running that helps reduce wear and tear. This Husqvarna chainsaw also features an anti-vibration system that lessens fatigue while improving comfort during long jobs. It includes many innovative safety features like an ergonomic design, low kickback and chain brake clutch all designed to maximize your protection when using this product.

Features of Husqvarna 51:

The Husqvarna 51 is a gas chainsaw that already proven to be an amazing product, with many homeowners and small contractors switching over from other brands. It is a great saw for the price. It is a very versatile machine that can be used for anything from light yard work to heavy-duty construction tasks. It is a lightweight (11.4 lbs), easy to use chainsaw which means that it starts quickly and easily. It runs on a powerful 2-stroke 51cc engine that can handle most tasks you need it for as it generates a plenty of power for the occasional user, delivering 3.1 HP every time you turn it on, like cutting down trees or clearing brush.

This model provides up to 12,500 RPM of power so you can cut through almost any type of wood with ease. It comes without the chain and bar, with a bar length of 24in. This saw has been designed and engineered in Sweden, so it’s no wonder why this saw performs so well. It features an ergonomic design for increased operator comfort and reduced fatigue while cutting wood. It also has a low noise level for the user’s comfort. The air purge system helps keep debris from entering the engine and stopping the chain when you’re working, it comes with fuel tank capacity of 600 ml (20.2 fl. oz.).

Pros and Cons in Brief:



Our Rating


When was Husqvarna 51 originally released?

Husqvarna 51

Husqvarna is the world’s largest and oldest power tool maker. The Swedish firm has been producing chainsaws since 1959. However, the firm has been in existence since before the 1700s.

The Husqvarna 51 was originally released in 1990 and manufactured throughout the early 90s.

It has been discontinued for a long time, but you can still purchase them used. They appear on internet marketplaces frequently, sometimes simply as parts, but equally often as functioning chainsaws.

Does husqvarna 51 chainsaw leak gas when turned sidways?

We heard few reviews of customers about Husqvarna 51 that complained about this issue, this is likely due to the carburetor not being sealed properly. You can fix this by applying some sealant to the gasket on the carburetor. This should stop the gas from leaking out. If you continue to have problems with your chainsaw, make sure to read the manual thoroughly or it might be worth taking it in for servicing. They will be able to take a look at it and fix any other issues that might be causing the gas to leak.

How to Adjust a Husqvarna 51 Carburetor?

The Husqvarna 51 is a small engine that is used on many different types of equipment. The carburetor on your Husqvarna 51 chainsaw may require adjustment if it’s having idle issues. The carburetor mixes the fuel and air before entering the engine cylinder. If the fuel-to-air ratio is incorrect or if the amount of mixture sent into the cylinder is wrong, the Husqvarna chainsaw may have difficulties starting and stopping when you use it. The carburetor on this engine can be adjusted to help it run better. There are four main screws that need to be adjusted: the high speed needle, the low speed needle, the idle screw, and the air screw.

1-The high speed needle is the screw that is located on the top of the carburetor. This needle controls how much fuel is delivered to the engine at high speeds. The factory setting for this screw is usually correct, but it may need to be adjusted if the engine runs too rich or too lean.

2-The low speed needle is the screw that is located on the bottom of the carburetor. This needle controls how much fuel is delivered to the engine at low speeds. The factory setting for this screw is usually correct, but it may need to be adjusted if the engine runs too rich or too lean.

3-The idle screw is the screw that is located next to the low speed needle. This screw controls the idle speed of the engine. The factory setting for this screw is usually correct, but it may need to be adjusted if the engine runs too rich or too lean at idle speeds.

4-The air screw is on top of the carburetor and can also be used to adjust fuel delivery. The factory setting for this screw is usually correct, but it may need to be adjusted if the engine runs too rich or too lean.


  1. Before adjusting the carburetor, clean the air filter. A dirty air filter might cause you to make inaccurate adjustments to it.
  2. Ensure the engine is cool before you adjust the carburetor.
  3. Make sure all of the screws are tight so they do not vibrate loose while you work on it.
  4. If a screw gets stripped, replace it instead of trying to reassemble it.
  5. On the Chainsaw, Locate the idle-speed screw and the idle-mixture screws on the chain’s side. The manual for the Husqvarna 51 provided by Manualslib that the idle-speed screw is labeled “T,” while low-speed and high-speed screws are labeled “L” and “H.”
  6. Turn both the low- and high-speed screws clockwise to the midpoint. Do not overclock the screws or damage to the engine may result. Remove the spark plug and let the chainsaw idle for a few minutes. Turn the “T” idle-speed screw counterclockwise if the chain turns while idling. A tachometer is advised when checking engine speed at Madsen’s Shop & Supply Inc. It should be around 2,700 rpm.
  7. Adjust the low-idle screw clockwise and counterclockwise until you reach the highest idling speed. If the chain begins to turn after resetting the “T” idle screw, adjust it again. When the saw reaches full speed without hesitation, and it idles smoothly.
  8. Turn the idle high-speed screw “H” to adjust the saw’s power. Power is increased when it is turned clockwise, and it is reduced when it is turned counterclockwise. It should not be set too high; otherwise, the engine will be damaged. However, if you set the chain speed too low, it won’t have enough power to function. Adjust it clockwise and counterclockwise until you find the ideal setting. Check the chainsaw’s acceleration and idle once more to ensure that it revs and idles smoothly.

Once your Husqvarna 51 carburetor has been properly adjusted, it should run like a well-oiled machine.

Things You Will Need:

  1. Flathead screwdriver
  2. Tachometer


If the chain fails to stop, call a local service shop. Using the saw if the idle speed isn’t working correctly is not a good idea. To prevent the bar and chain from scraping against the ground or other things, service the chainsaw on a flat surface with the saw pointed away from you.

Husqvarna 51 Operator's Manual:

Husqvarna 51 Operator's Manual

Start and Stop Warning

  • Start the saw engine with the bar, chain, and clutch cover in place – or else the clutch might fall off and result in bodily harm.
  • Before you start, move the saw at least two feet away from the fueling area.
  • Make sure that the power is turned off and that there are no obstructions between the saw and the ground. Make sure you have a solid footing as well.
  • Keep people and animals at a safe distance from the working area.


  1. Hold the saw down with your left hand and grip the front handle with your right. Put your right foot in the rear handle to hold it steady. With your righthand, pull out the starter cord slowly until the starter paws snap into place. Then pull strongly.
  2. The choke control should be pushed in as soon as the engine starts and made many attempts at starting. When the engine begins, apply full throttle as quickly as possible. The throttle latch will then release.

Caution: Do not let go of the starter handle once it has been pulled all the way out, as this might cause the saw to break.


That is a very simple step, by turning off the ignition, you can stop the engine!

StopHusqvarna Chainsaws

Husqvarna is the world’s largest and oldest power tool maker. The Swedish firm has been producing chainsaws since 1959. However, the firm has been in existence since before the 1700s.


Maintenance is an important part of owning any chainsaw, and the Husqvarna 51 is no exception. Make sure you keep up with the recommended maintenance tasks to ensure safe and proper operation of your saw.

Daily maintenance

  1. Check for smooth throttle operation. The saw should be taken to your dealer if any binding occurs or the engine fails to return to idle, before it is used again. Also, ensure that the trigger can’t be pulled until the throttle trigger lockout has been activated.
  2. Clean the chain brake and inspect it for functionality, as directed. Ensure that the chain catcher is in good working order. If it isn’t, get rid of it right away.
  3. Clean or change the air filter as needed. Look for any damage or holes.
  4. For more even wear, the bar should be turned on a daily basis. Check for any obstructions in the lubrication hole of the bar. Remove any excess lubricant from the sprocket tip if applicable.
  5. Check the oiler’s operation to ensure that the bar and chain are adequately lubricated.
  6. Remove the chain from the bike, clean it, and sharpen it. Check for wear on the drive sprocket. Replace it if necessary.
  7. Check the starter and starter cord for wear or damage. Clean out any accumulated debris from the engine’s air intake slots.
  8. Check for any loose nuts and screws and tighten if required.
  9. To ensure that the engine turns off, test the stop switch.

Weekly maintenance

  1. Check that the AV elements are not soft or torn.
  2. Lubricate the friction plate of the clutch drum.
  3. Take a file and smooth out the burrs, if any, on the sides of the bar.
  4. Remove the gas cap and clean the spark plug. The ideal gap is 0,5 mm (0,020 inch).
  5. Check the recoil spring and the starter. Clean the flywheel fins.
  6. Clean the cylinder’s cooling fins.
  7. Remove the oil filter and clean or replace the screen on the muffler.
  8. Remove any foreign particles from the carburetor body and air box.

Monthly maintenance

  1. Check the chain brake’s brake band for wear.
  2. Check for wear on the clutch centre, clutch drum, and clutch spring.
  3. Clean the outside of the carburetor.
  4. Change the fuel filter.
  5. Clean the inside of the fuel tank.
  6. Clean the inside of the oil tank.
  7. Check all wires and connections to be sure they are secure.
  8. Change the spark plug.
  9. Change the air filter.

Yearly maintenance

  1. Replace air filter and foam filter.
  2. Sharpen or replace chain as necessary.
  3. Check condition of spark plug, adjust gap as needed. Clean if necessary.

Final thoughts

The Husqvarna 51 is a chainsaw that can be adjusted to meet various working conditions. It has been around since 1990 and the manufacturer has been producing the best chainsaws in the world, making them since 1959! The Husqvarna 51 chainsaw is a powerful tool that can be used for a variety of tasks, from pruning branches to cutting down trees. To get the most out of this saw, it’s important to adjust the carburetor correctly. With great features such as easy start up and push button choke control makes it an all-around good buy.

Related Posts
Like what you've read? Share it with your friends

Leave a Comment