LawnMaster GT1238 Operator's Manual page 12

ASSEMBLY
JOINING THE UPPER SHAFT TO THE MOTOR HEAD (See Figure 6.)
1. Align the upper shaft with the lower shaft.
2. Insert upper shaft into the lower shaft and lock pin button into place.
NOTE:
If the button does not release completely in the positioning hole, the shafts are not locked
into place. Slightly rotate from side to side until the button is locked into place.
WARNING
Never adjust the upper handle while the power head is running. Failure
to stop the motor may cause serious personal injury
PREPARING THE TRIMMER FOR USE (See Figure 7 & Figure 8.)
1.Attach the outlet end of an extension cord to the plug on the rear of the grass trimmer.
NOTE:
Use only approved outdoor extension cords.
Fig. 4
Fig. 6
12
Fig. 5