4
TECHNICAL DATA
WG163  WG164 WG163.9
Voltage 20V 
   MAX*
No Load Speed 7600/min
Cutting Diameter 12 inch
Line Diameter 0.065 inch
Charging time 5hr /
Machine Weight 5.3 lbs 4.6 lbs
*Voltage measured without workload. Initial battery 
voltage reaches maximum of 20 volts. Nominal 
voltage is 18 volts.
ACCESSORIES
WG163 WG164 WG163.9
Safety guard 1 1 1
Flower guard 1 1 1
Charger (WA3742) 1 1 /
Battery pack (WA3525) 2 2 /
Edger wheel 1 1 1
Spool (WA0004) 1 3 1
spool cap (WA0217) 1 2 1
Only use the appropriate accessories intended for 
this tool. Accessory information can be found on 
the product packaging, at a WORX dealer or on our 
website at www.worx.com  or by calling 1-866-354-
WORX(9679). 
WARNING: any other accessory or attachment may 
increase the risk of injury.
IMPORTANT SAFETY 
INSTRUCTIONS
WARNING! When using electric gardening 
appliances, basic safety precautions should 
always be followed to reduce the risk of fire, electric 
shock, and personal injury, including the following:
WARNING: Read all instructions.
WARNING: This product maybe contains 
lead, phthalate or other chemicals 
known to the State of California to cause 
cancer, birth defects and other reproductive 
harm. Please wash your hands after use.
FOR ALL APPLIANCES
1)  Avoid Dangerous Environment - Don’t use 
appliances in damp or wet locations.
2)  Don’t Use In Rain.
3)  Keep Children Away - All visitors should be kept 
at a distance from work area.
4)  Dress Properly - Do not wear loose clothing or 
jewelry. They can be caught in moving parts. Wear 
protective clothing; use of rubber gloves, long 
pants, long sleeved shirt and substantial footwear 
is recommended when working outdoors. Wear 
protective hair covering to contain long hair.
5)  Use Safety Glasses - Always use face or dust 
mask if operation is dusty.
6)  Use Right Appliance - Do not use appliance for 
any job except that for which it is intended.
7)  Don’t Force Appliance - It will do the job better 
and with less likelihood of a risk of injury at the 
rate for which it was designed.
8)  Don’t overreach - Keep proper footing and 
balance at all times.
9)  Stay Alert - Watch what you are doing. Use 
common sense. Do not operate appliance when 
you are tired.
10) Store Idle Appliances Indoors - When not in use, 
appliances should be stored indoors in dry, and 
high or locked-up place - out of reach of children.
11) Maintain Appliance With Care - Keep cutting 
edge sharp and clean for best performance and 
to reduce the risk of injury. Follow instructions 
for lubricating and changing accessories. Inspect 
appliance cord periodically, and if damaged, 
have it repaired by an authorized service facility. 
Inspect extension cords periodically and replace if 
damaged. Keep handles dry, clean, and free from 
oil and grease.
12) Check Damaged Parts - Before further use of the 
appliance, a guard or other part that is damaged 
should be carefully checked to determine that it 
will operate properly and perform its intended 
function. Check for alignment of moving parts, 
binding of moving parts, breakage of parts, 
mounting, and any other condition that may 
affect its operation. A guard or other part that is 
damaged should be properly repaired or replaced 
by an authorized service center unless indicated 
elsewhere in this manual.
FOR ALL BATTERY – OPERATED GARDENING 
APPLIANCES
1. For all battery-operated gardening 
appliances
1)  Do not charge appliance in rain, or in wet 
locations.
2)  Do not use battery-operated appliance in rain.
Always remove or disconnect battery 
pack before adjusting, cleaning, 
servicing or transporting the lawn trimmer.
2. For all battery-operated products employing 
a detachable or separable battery:
1)  Use only the following type and size battery(ies): 
WA3525 / WA3520