Simplicity Signature Pro Serie Manuel De L'utilisateur page 19

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Replacing the Shear Pins or Shear Bolts
DANGER
The snowthrower contains a rotating auger and impeller to
throw snow. Fingers or feet can quickly become caught in the
rotating auger or impeller resulting in traumatic amputation or
severe laceration.
• Turn the engine OFF, wait for all moving parts to stop, and
remove the ignition key or push/pull key before performing
any maintenance or repairs.
The augers are secured to the gear box axle with either shear
pins, shear bolts, or shear bolts with spacers. These shear pins
or bolts are designed to break if an object becomes lodged in
the auger housing. Shear pins are installed with cotter pins.
Shear bolts and shear bolts with spacers are installed with nuts.
The three hardware systems are not interchangeable.
1. Shut off the engine and remove the key.
2. Remove any remaining pieces of the hardware from the
auger shaft and discard.
3. Using a grease gun, apply lithium grease to the grease
fitting (if equipped) on the auger shaft. Rotate the auger to
distribute the grease.
4. Align the auger holes and axle holes and install:
• a new shear pin (A, Figure 27) through the auger hole
(C) and secure with a cotter pin (B).
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• a new shear bolt (A, Figure 28) through the auger hole
(B) and secure with the locknut (C).
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• a new shear bolt (A, Figure 29) and spacer (B), through
the auger hole(C) and secure with the locknut (D).
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