GMC GMCGT550, Original Instructions Manual

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Feeding the trimmer line
Note: This is not a bump feed trimmer. Do not bump the spool to release line.
• The Trimmer automatically feeds a small amount of line feed when it is powered on.
Simply release the On/Off Trigger (8) in use and then re-apply power by pressing the On/
Off Trigger again to feed more line
• A manual Line Feed (15) button is also included
• If neither of the line feed features works, it is possible the line feed spool has run out of
line, or the line is twisted or tangled
Grass trimming
1. Always keep the machine at arm’s length with the trimmer head pointed away from your
body
2. Move the trimmer head across the area to be trimmed using a smooth sweeping motion
3. When approaching an edge or wall, do not allow the line to impact the wall or any other
hard vertical surface
4. Always be aware of the position of the power cord. Keep the power cord well away from
the cutting area at all times
Lawn edging
WARNING: Be careful when lawn edging as any excess line cut-off will be removed on a
vertical axis and if the tool is tilted it is possible it could be thrown towards the operator’s
eyes.
1. Put the tool into lawn edging mode with the Mode Selector (3)
2. Turn the tool over so the Edging Guard (4) is downwards
3. Carefully move the tool along, trimming only the excess grass over the edge of the earth
below
Accessories
• A range of accessories, including replacement line spools and nylon line are available from
your GMC dealer. Spare parts can be purchased from your GMC dealer or online at
www.toolsparesonline.com
Maintenance
WARNING: ALWAYS disconnect the tool from the power supply, before cleaning or
carrying out maintenance.
General inspection
• Regularly check that all the fixing screws are tight. They may vibrate loose over time
• Inspect the supply cord of the tool, prior to each use, for damage or wear. Repairs should
be carried out by an authorised GMC service centre. This advice also applies to extension
cords used with this tool
Replacing trimmer spool
1. Remove the spool by pushing in both Cover Release Grips (12) and removing the Spool
Housing Cover (11)
2. Remove the empty spool (Image G)
3. Fit the new spool into place (Image I)
4. Carefully remove the line held in the small indentation of the spool and fit through the Line
Eyelet (16) on the same side
5. Repeat Step 4 for the other side of the spool
6. Refit the Spool Housing Cover
Note: Adjust the length of the trimmer line to no longer than the Line Cut-Off Blade (14) as
any excess line will be cut off when the tool is operated.
Replacing the nylon cutting line on a spool
1. Cut a piece of nylon line approximately 2-3m in length and make a simple knot in the
middle of the line (Fig. I)
2. Fit the line over the top section of the spool and tighten the knot then wind in the direction
indicated on the top of the spool as arrowed in Image I
3. Wind the line around the spool in the top section (Image H) until a small amount of line is
left and can be secured in the indentation in the top of the spool as shown
4. Now wind the lower section in the same winding direction and secure again
• Ensure the line is wound cleanly in parallel
Lubrication
• Lubricate all moving parts with a suitable lubricant spray, at regular intervals
Cleaning
WARNING: ALWAYS wear protective equipment including eye protection and gloves when
cleaning this tool.
• Keep your tool clean at all times. Dirt and dust will cause internal parts to wear quickly, and
shorten the device’s service life
• Clean the body of your machine with a soft brush, or dry cloth
• Never use caustic agents to clean plastic parts. If dry cleaning is not sufficient, a mild
detergent on a damp cloth is recommended
• Water must never come into contact with the tool
• Ensure the tool is thoroughly dry before using it
• If available, use clean, dry, compressed air to blow through the ventilation holes (where
applicable)
Brushes
• Over time the carbon brushes inside the motor may become worn
• Excessively worn brushes may cause loss of power, intermittent failure, or visible sparking
• If you suspect that the brushes may be worn, have them replaced at an authorised service
centre
Storage
• Store this tool carefully in a secure, dry place out of the reach of children
Disposal
Always adhere to national regulations when disposing of power tools that are no longer
functional and are not viable for repair.
• Do not dispose of power tools, batteries or other waste electrical and electronic equipment
(WEEE), with household waste
• Contact your local waste disposal authority for information on the correct way to dispose of
power tools and batteries
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