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Snowblower shear bolt, locking nut sold separately. This part has been updated by the manufacturer; it no longer requires a spacer. Shear bolts are designed to break in half if the auger strikes a hard object to prevent damage to the transmission and engine by stopping the auger from turning.

Briggs & Stratton snowblower shear bolt kit. 1/4-20 x 1 3/4". Shear bolts are designed to break in half if the auger strikes a hard object to prevent damage to the transmission and engine. If the shear bolt is broken, the auger won’t be able to turn.
Shear pins are the first line of defense when your Poulan Pro snowblower hits a hidden rock, ice chunk, or debris. These small, inexpensive pins are designed to break — intentionally — so the auger stops spinning before damage spreads to the gearbox or transmission. When a shear pin snaps, your auger jams and won't turn, but that's actually the pin doing its job.
The fix is straightforward: replace the broken shear pin with an OEM Poulan Pro equivalent. Most snowblower owners keep a spare pack handy because shear pins are consumables. We carry genuine Poulan Pro shear pins and bolts that match your machine's specifications exactly. Find your Poulan Pro shear pin here.
Shear pins break when the auger hits something hard — a rock, ice chunk, or debris hidden in the snow. This is intentional design. The pin breaks to protect the gearbox and transmission from catastrophic damage. It's a cheap, easy fix that saves you from a $200 to $500 transmission repair. When you hit something, the auger jams quickly and the pin snaps. You replace it, clear the jam, and move on. Always keep spare shear pins in your snowblower bag.
Poulan Pro snowblower shear pins vary by auger shaft diameter and the mounting hole size. The safest approach is to enter your Poulan Pro model number (found on the frame or underneath the hood) into the lookup tool. That gives you the exact OEM pin specification. If you have the broken pin in hand, you can measure the diameter and length as a second check. Most Poulan Pro models use standard 7/16" or 1/2" diameter pins, but hardware store pins are often lower quality. OEM Poulan Pro pins are worth the investment.
Yes. Shear pins are consumables — you'll use them again. Buy a 5-pack or 10-pack and store them in a small bag clipped to your snowblower frame or in a winter maintenance kit. That way, when you hit something mid-storm, you have a replacement ready instead of being stranded. Bulk packs are also cheaper per pin than single replacements.
Repeated shear pin breakage usually means either the auger is hitting something regularly (debris in the chute or auger housing) or the snow you're clearing is exceptionally heavy/dense with hard ice. Clear the auger housing and discharge chute of any buildup, then test on lighter snow. If you're breaking pins on every pass on the same property, there may be rocks or debris in that spot. If pins break only in specific conditions (very wet, icy snow), that's normal — those conditions put extra load on the auger. Keep extra pins on hand and don't over-load the chute; feed snow through steadily instead of jamming it in.


Maintain the efficiency of your Poulan Pro snowblower by replacing worn shear pins. Ordering genuine shear pin parts online through Repair Clinic is simple and convenient. Use your model or part number to ensure the right model match, backed by our No-Hassle 365-Day Returns and Price Match Guarantee. By ordering before 9:00 PM ET, you can benefit from our same-day shipping, ensuring quick delivery for your repair needs. To find additional options, check out our range of Poulan Pro Snowblower Parts or Poulan Pro Snowblower Parts. If you need assistance with installation, our Snowblower Repair Help section offers comprehensive guides.
On Poulan Pro snowblowers, look for the model number on the frame behind the engine, under the handle panel, or near the auger housing. Check for a model and serial number label, and copy the complete model number exactly, including letters and numbers. Enter it in the model number search to pull up the parts matched to your unit. The model number filters Repair Clinic's full Poulan Pro snowblower parts catalog, so you can find parts that fit your specific machine instead of comparing parts by appearance alone. It is the quickest way to be sure the part fits before you order.

Whether you own a Poulan Pro Snowblower or work on one professionally, Repair Clinic's online repair help covers what you need. Start with a symptom guide to narrow the likely cause, then use the model number lookup to confirm the correct replacement part. Written repair instructions and matching videos walk you through each step of the installation for a clean, first-time repair.

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Learn the top five reasons your snowblower's auger won't turn and how to fix it. From worn belts to broken shear pins, this guide covers common causes and repair solutions.