to work the weed wrecker where it and press space
pound it with the mech's weed whacker
After building the mech (get the motor and crank), climb aboard the Mech and select Equip on the Weed Whacker on your items. To use the Weed Whacker to "splat" plants, aim up or down with your mouse and press the spacebar.
Once you have attached the Mech Crank and the motor, enable the Mech Weed Whacker and use the spacebar to whack the weeds (you need at least two hits per section on weed growth).
The Weed Whacker attachment is in the quarters of Captain Ziggs, on top of the Hub. You have to complete the Mech in the garage next to Sully's, then attach the Whacker to it. This will let you enter the door at the far left of the island, using the spacebar to activate the Whacker.
use the weed wacker. and press spacebar
you press on the space bar;]
You cut the weeds blocking the door of the Storeroom far left of the island) with the Weed Whacker. The weed whacker is in Captain Ziggs' room atop the Hub, and must be attached to the Mech Walker (in the garage next to Sully's). Finishing the Mech requires the Mech Motor and Mech Crank.
The Mech Walker is the key to entering the storeroom and defeating the monster plants that are active there. Once you finish the Mech with the Motor and Crank, you can attach the Weed Whacker attachment and enter the door at the far left of the island.
You have to put on the weed whacker and click in front of it and smash the weeds. :]
weed whacker
weed whacker
u press the space bar