Are Snow Blower Shear Pins Universal

Are Snow Blower Shear Pins Universal?

Are you tired of replacing your snow blower’s shear pins every time they break? A question continuously tickling in your mind “Are Snow Blower Shear Pins Universal?” Shear pins are an essential component of a snow blower, and they protect the auger shaft and gear from damage.

You are not alone to face this issue. Almost every homeowner faces the same because of operating it multiple times. It is important that shear pins are not manufactured in equal sizes, and it’s made in different sizes depending upon the Snow blower.

As winter is approaching, many people are doing maintenance of their snow blowers. So, today, I will provide you with the complete information about snow blower shear pins, addressing questions about their universality and provide you with a valuable solution for selecting, maintaining and replacing them.

Are Snow Blower Shear Pins Universal – The Straightforward Answer

The straightforward answer is no – shear pins are not universal. Shear pins are designed according to the snow blower model to meet specific torque requirements and auger dimensions. The purpose of shear pins is to break under a predetermined force, safeguarding the auger gearcase from damage.
Different snow blower models have distinct auger sizes and torque needs, and unique shear pin specifications. Using the wrong shear pin can lead to inefficiencies, improper torque transmission, and potential damage to the snow blower.

Common sizes of shear pins in Snow Blowers

There are some general trends and standard sizes that are commonly used across different brands. Few common sizes of shear pins are:

1/4 inch diameter by 1-1.2 inches long:

This is a common size for many smaller single-stage snow blowers. The smaller size is suitable for machines with less powerful engines and smaller augers.

5/16 inch diameter by 1.5 inches long:

This size is often found in medium-sized two-stage snow blowers. It provides a balance between strength and the ability to break under a specific force to protect the auger.

3/8 inch diameter by 2 inches long:

Larger, more powerful two-stage snow blowers may use shear pins of this size. The increased diameter and length contribute to the durability needed for heavier-duty snow clearing.

Selecting the Right Shear Pin:

It is very important to select the right shear pin for your snow blower. If you wrongly choose the shear pin it will damage your machine and it will be worse when you are dealing with the snow all over the city and your snow blower stops working. These are the key Steps while selecting the right Shear Pin for your Snow blower:

Step 1: Check the Manual:

Check your snow blower’s manual. All information pertaining to the shear pin is written in the service / user manual.

Step 2: Visit the Manufacturer’s Website:

If you cannot find details in the manual, head online to the manufacturer’s site.

Step 3: Find Part Numbers:

Look for shear pin part may be written on the manual you can also visually check the shear pin for any part number.

Step 4: Be Model-Specific:

You can check online by giving the model of your snow blower. Online you can access thousands of relevant queries about your snow blower.

Ask the Pros:

You can also consult with the professionals and get the answer easily about the relevant shear pin.

Replacing and Maintaining the Shear Pin:

Regular inspection of shear pins is vital for detecting signs of wear or damage. Look for indicators such as bending, cracks, or excessive wear. Immediate replacement of damaged shear pins is important to prevent further harm to the snow blower.

Before Starting Work: Must Ensure Safety:

  • Always disconnect the spark plug wire before working on any snow blower components.
  • Wear safety glasses and gloves to protect yourself from potential hazards.

Tools and Materials Needed:

  • Wrenches or sockets (sizes may vary depending on snow blower model)
  • Punch and hammer (if removing a broken shear pin)
  • New shear pins (correct size and specifications for your snow blower model)

Steps to Replace Shear Pin:

Step 1: Identify the Broken Shear Pin:

  • Locate the auger assembly, which consists of the spinning blades that clear snow.
  • Look for the broken shear pin. It is typically found near the base of the auger where it connects to the drive shaft.

Step 2: Remove the Broken Shear Pin (if applicable):

  • If the shear pin is completely broken, you may be able to simply pull it out from both sides of the auger.
  • If the broken piece is still embedded in the auger, use a punch and hammer to drive it out from the opposite side.

Step 3: Insert the New Shear Pin:

  • Slide the new shear pin through the holes in the auger and drive the shaft.
  • Ensure the shear pin is properly aligned and seated.
  • Tighten the Shear Pin Nut:
  • Use a wrench or socket to tighten the nut on the underside of the shear pin.
  • Do not overtighten, as excessive force can damage the shear pin.

Step 4: Inspect and Test:

  • Rotate the auger assembly by hand to ensure it spins freely.
  • If there is any resistance or binding, check the alignment of the shear pin and retighten the nut if necessary.

Step 5: Reconnect the Spark Plug Wire:

  • Reconnect the spark plug wire and start the snow blower to test the new shear pin.


Shear pins are not universal, and using the wrong shear pin can compromise the performance and safety of your snow blower. Take the time to consult your owner’s manual, manufacturer’s website, or seek expert advice when selecting shear pins.

Regular inspection and prompt replacement of damaged shear pins are essential practices to maintain optimal snow blower performance and prevent costly repairs.

By understanding the specific requirements of your snow blower model, you can ensure a smoother and more efficient snow-clearing experience.

Naveed Aanjum author

About Naveed A Hashmi

In my childhood, I used to see my parents while working in the land, for these reasons today I have been serving the same as our own tradition and culture. I thus love to stay in it, because I want to learn something advanced and new so that I may improve my farm’s contour and help others with my experience.

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