Dual Blade Kit

21in 60V Lawn Mower

Model No. 161-3138-Serial No. and Up

Installation

Replacing the Existing Blade(s)

Important: You will need a torque wrench to install the blade properly. If you do not have a torque wrench or are uncomfortable performing this procedure, contact an Authorized Service Dealer.

Warning

When servicing the blade, the blade can still move even though the power source is off. The blade is sharp; contacting the blade can result in serious personal injury.

  • Keep your hands and feet away from a moving blade.

  • Wear gloves when servicing the blade.

  1. Remove the electric-start button and battery pack from the machine.

  2. Use a block of wood to hold the blade(s) steady (Figure 1).

  3. Remove all mounting hardware and remove the blade(s); save all mounting hardware (Figure 1).

    g423077

    Figure 1

  4. Secure the new blades to each other as shown in Figure 2; torque the nuts securing the blades together to 18.9 to 19.6 N∙m (167 to 173 in-lb).

    Note: Ensure that the blade is installed between the tabs on the underside of the fan.

    g423066

    Figure 2

    1. Tab markings on fan
    2. Locknut
    3. Top blade cutting edge
    4. Bottom blade cutting edge
    5. Hex-head bolts
    6. Blade bolt

  5. Install the new blades using the blade bolt (Figure 2).

  6. Use a torque wrench to tighten the blade bolt to 61 to 74 N∙m (45 to 55 ft-lb).