INSTALLATION OF THE TRIMMER HEAD
NOTE: If your unit has a plastic cover over the threads on the threaded shaft, remove the covering to expose the threads. Before instal- ling the trimmer head, make sure the dust cup and retaining washer are positioned on the gearbox.
ShieldGearbox
Aligned holes Dust cup
Retaining washer
NOTE: Make sure all parts are properly installed as shown in the illustration before installing the trimmer head.
1.Align hole in the dust cup with the hole in the side of the gearbox by rotating the dust cup.
2.Insert a small screwdriver into aligned holes. This will keep the shaft from turning while tightening trimmer head.
3.While holding the screwdriver in position, thread trimmer head onto the shaft in the direction shown on the decal (counter- clockwise). Tighten until secure.
NOTE: The retaining washer must be posi- tioned with the raised section facing toward the gearbox.
ASSEMBLY INFORMATION - WEED BLADE
WEED
BLADE
INSTALLATION OF THE METAL BLADE
WARNING: Wear protective gloves when handling or performing maintenance on the blade to avoid injury. The blade is sharp and can cut you even when it is not moving.
WARNING: Do not use any blades, or fastening hardware other than the washers and nuts shown in the following illustrations. These parts must be provided by McCulloch and installed as shown below. Failure to use proper parts can cause the blade to fly off and seriously hurt you or others.
NOTE: The dust cup is located on the gearbox shaft and not in the parts bag. All other fasten- ers mentioned in the following assembly steps are in the parts bag.
1.Install the blade and the retaining washer over the threaded shaft.
2.Make sure the raised part of the retaining washer is facing the gearbox and the raised area fits into the hole in the center of the blade.
3.Slide the blade and retaining washer onto the shaft of the gearbox.
4.Place the cupped washer onto the shaft. Make sure the cupped side of the washer is toward the blade.
5.Install the blade nut by threading onto the shaft counterclockwise.
ShieldGearbox
| Dust cup |
| Threaded |
Aligned holes | shaft |
Retaining washer
Cupped washer 
Nut
Wrench 
Blade
NOTE: Remove the trimmer head before installing the weed blade. To remove the trimmer head, align hole in the dust cup with the hole in the side of the gearbox by rotating the dust cup. Insert a small screwdriver into aligned holes. This will keep the shaft from turning while loos- ening the trimmer head. Remove the trimmer head by turning clockwise. Remove the screw- driver. See INSTALLATION OF THE TRIM- MER HEAD for illustrations. Be sure to store all parts and instructions for future use.
NOTE: Make sure all parts are in place as il- lustrated, and the blade is sandwiched between the dust cup and the retaining washer. There should be no space between the blade and the dust cup or the retaining washer.
6.Align hole in dust cup with hole in side of gearbox by rotating the blade.
7.Insert a small screwdriver into aligned holes. This will keep the shaft from turning while tightening the blade nut.
8.Tighten blade nut firmly with wrench (pro- vided) while holding screwdriver in position.
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