The following instructions are for curved shaft trimmers that follow the standard curved shaft instructions. Not all curved shafts follow these instructions. You can check the Brands section to see if your particular brand and model follows these instructions. From this point forward we'll use the term "curved shaft" for any trimmer, straight or curved, that follow these instructions.
Curved shaft trimmers with fixed line heads follow the Fixed Line instructions.
Your trimmer may not look exactly as the ones illustrated. We used different trimmers on the pictures for clarity purposes.
Curved Shaft trimmers have a long shaft (about 2" long) that can't be removed. The GrassGator heads only require a shaft that's about an inch long so in order to install the GrassGator head on a curved shaft we need to compensate for the extra space. The "spacer cup" included in the kit will take care of the extra space on the shaft and will give the GrassGator head a platform to sit against.
Remove the bottom cover. Some trimmers have tabs that you push towards the head to open it up. On some others you unscrew the bump knob. Remove the spool, any remaining line and the spring. Leave the spool housing on (top that's attached to the trimmer) . This stops the cup from sliding all the way down the shaft.
Slide the spacer cup over the shaft, close side facing out. This will take care of the space inside the spool housing while giving the GrassGator a flat surface to sit against.
The GrassGator kit comes with a pack of 7 nuts and 2 bolts. Most curved trimmers have a shaft that's threaded on the inside (female). Very few have a shaft that is threaded on the outside (like the picture on Step 2). If the shaft of your trimmer is threaded on the inside then find the bolt from the kit that fits the shaft. If the shaft is threaded on the outside then find the nut that fits the shaft. Most curved shafts require a regular right hand threaded fastener but in very rare cases, a left hand thread nut or bolt is needed. Once you find the correct nut or bolt, set it aside.
Otherwise continue with the next step below.
First locate the bottom of the GrassGator head. The bottom of the GrassGator head is the side with the hex shaped recessed hole. This is the side that should be facing the ground once the GrassGator head is in use. Very important: The hex shaped hole on the GrassGator head will NOT go over the hex on the top of the shaft. The hex hole should be facing the ground plus, if you can see the hex nut on the top of the shaft then it means you removed the spool housing. Go back to Step 1 and make sure you leave the spool housing on.
The GrassGator head will work as a wrench. You may have to start the nut or bolt with your fingers but once the head of the bolt or the nut is inside the hex shaped hole on the GrassGator head you can then keep turning the GrassGator head until it's tight. There should be no up and down play at all. The GrassGator head should be tight against the spacer cup. Any up and down play may damage the GrassGator head or your trimmer. It is ok if the shaft only gets a few threads on the nut. The GrassGator head is self tightening and it will get a few more threads upon use. If there's no up and down play then, you are done and ready to use your new GrassGator!
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