A string trimmer is an essential tool for lawn maintenance. It can aid in the removal of overgrown weeds and grasses and act as a lawn edger. A nylon string at the bottom of the tool is responsible for the trimming action. It spins at a high rate of speed and cuts down any unwanted growth. Over time the nylon string will split or break, making it necessary to put new line in your trimmer.
Establish the correct string size for your trimmer. Check the instruction booklet if you are not sure. The most typical size is .80 mm.
Unscrew the cap on the bottom of the trimmer spool.
Remove the spool and discard any pieces of string that are still remaining.
Unroll thestring from the replacement coil. Cut off a piece about 6 to 8 feet long.
Feed the string through the starter hole on the spool.
Wind the string onto the spool. The string should be loaded in the direction indicated on the side of the spool.
Leave 6 to 8 inches of string remaining at the end of the spool. Thread this through the bottom of the opening on the spool.
Insert the spool back into the trimmer and feed the string through the hole to the side of the trimmer head.
Reattach the cap to the bottom of the trimmer.
Turn off the engine and pull the spark plug out to disconnect it.
Pull the worn trimmer off the cutter disk.
Cut a piece of line with a pair of sharp scissors 1 to 2 inches longer than the string you just removed from the trimmer.
Push one end of the line through one of the holes in the cutter disk. Repeat with the other end of the line and push through the other hole.
Cross the line and push the ends into the two holes on the cutter disk's side.
Readjust the line so that the line ends extend at the same length.
Pull the line tight and cut the ends of the line if too much slack remains.
Disconnect the electrical power cord from the Toro 910 trimmer.
Lay the trimmer upside down on a flat surface so the trimmer head is pointing toward you. Clean any grass clippings and dirt off the trimmer head with a dry cloth.
Locate the two slots on the bottom of the trimmer head by the feed bump. The feed bump is the portion of the head that you tap on the ground to feed more trimmer line as you are trimming.
Insert a large flat head screwdriver into one of the two slots. Press the screwdriver firmly into the slot and twist the screwdriver handle clockwise 1/4 turn.
Pull the spool straight off the trimmer and replace the line or perform any other repairs as necessary.
Remove the spool from the weed trimmer hub. Most have either side tabs that need to be pushed in or a central plastic nut that must be unscrewed.
Every spool has the correct line size printed on it. Common types are 0.80 and 0.95. Get the one that is made for your spool.
Inside the spool will be a little anchor hole for the line. Insert the new line inside.
Most spools wind counterclockwise. On the spool there will be arrows showing which way the line needs to be wound. Follow the arrows and wind the line.
Continue winding the line until the spool is almost full.
Use shears to clip the line. Hold the clipped end or the spool will unravel.
Place the spool back into the weed trimmer hub, and thread the clipped end through the exit port hole in the hub. Allow about 6 to 8 inches of line to extend from the exit port. Press the spool back into the hub and secure it with either the push tabs or the plastic nut.
Disconnect the trimmer from the power source by either unplugging the power cord or detaching the spark-plug wire from the spark plug.
Turn the trimmer over so the spool and the motor assembly are facing up.
Hold the spool in one hand and turn the knob in the center counterclockwise with your other hand to disengage the spool cover.
Remove the spool cover and the metal spring beneath it that places tension on the spool. Set these parts aside in a safe place.
Lift the spool straight out of the housing and off the motor shaft.