Should Snowblower Auger Spin Freely?
A snowblower auger should not spin freely when the auger control lever is off. A freely spinning auger is a symptom of broken shear pins. Shear pins are a fail safe feature, designed to break when the auger hits a solid object.
Vented Gas Cap
What are Snowblower shear pins?
Vented gas caps
What do Snowblower shear pins do?
How to diagnose Broken snowblower shear pins
Symptoms of a broken shear pins include:
- Auger spins freely
- Snowblower not blowing snow far
- One auger not moving when auger lever engaged
- Snowblower not moving snow as before
How to fit new snowblower shear pins
tools you'll need
To make the job move like butter you’ll need the following tools:
- Wrench set (ratcheting would be nice)
- Ratchet & socket and long extension
- Hammer & punch
- Grease gun
- Hand light (over 50s)
Replacement shear pins
Shear pin replacement as follows:
- Rotate the free spinning auger to locate the auger axle pin hole.
- Broken pin remnants may be lodged in the axle. If so, use hammer and punch to remove. Add a little WD40 first
- Using a grease gun pump grease into the auger grease nipple and spin auger to distribute the grease
- Align the auger hole with the axle hole
- Fit the new shear pin. (some augers may have a hole larger on one side, if so ensure to fit the pin with shoulder to the larger side)
- Bolt type – Tighten shear pin (bolt) using wrench and ratchet set until it seats, then back it off. The shear pin should be free to spin
- Pin type – Fitting the pin style is easier, push pin home and fit clip