WARNING:
When servicing, use only identical replacement parts.
Use of any other parts could create a hazard or cause
product damage.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1, along with hearing protection.
Failure to do so could result in objects being thrown into
your eyes and other possible serious injuries.
WARNING:
Before inspecting, cleaning, or servicing the machine,
shut off engine, wait for all moving parts to stop, and
disconnect spark plug wire and move it away from spark
plug. Failure to follow these instructions can result in
serious personal injury or property damage.
GENERAL MAINTENANcE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use.
Use clean cloths to remove dirt, dust, lubricant, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating lubricants, etc., come in con-
tact with plastic parts. Chemicals can damage, weaken or
destroy plastic which can result in serious personal injury.
You can often make adjustments and repairs described here.
For other repairs, have the trimmer serviced by an authorized
service dealer.
SPOOL REPLAcEMENT STRING HEAD TAP
ADVANcE SYSTEM
See Figures 11 - 12.
If replacing line only, refer to Line Replacement later in
this manual.
Use only .080 in. trimmer line.
Stop the engine and disconnect the spark plug wire. Hold
the string head and unscrew the spool retainer.
To remove the spool retainer:
Turn the spool retainer counterclockwise for GM22600.
Turn the spool retainer clockwise for GM22650.
Remove the empty spool from the string head.
NOTE: It is not necessary to remove the string head
housing from the drive shaft.
Insert the new spool into the string head.
MAINTENANcE
NOTE: Make sure the arrows on the spool are aligned
with the eyelets in the string head housing. Push down
and hold the spool and housing together while complet-
ing the installation.
Reinstall the spool retainer to secure.
To install the spool retainer:
Turn the spool retainer clockwise for GM22600.
Turn the spool retainer counterclockwise for GM22650.
Install line as described in Line replacement.
LINE REPLAcEMENT
See Figures 12 - 14.
Stop the engine and disconnect the spark plug wire.
Rotate the spool clockwise as necessary to align the
arrows on the spool with the eyelets in the string head
housing.
Cut one piece of trimmer line 15 ft. long. Insert the line
into the eyelet on the string trimmer housing. Push until
the end of the line comes out the other side of the string
head. Pull the line from the other side until equal amounts
of line appear on both sides of the spool.
Rotate the spool clockwise to wind the line on the spool
until approximately 6 in. of line is showing on each side.
Push the spool retainer down while pulling on line(s) to
manually advance the line and to check for proper as-
sembly of the string head.
cLEANING THE EXHAUST PORT
NOTE: Depending on the type of fuel used, the type and
amount of lubricant used, and/or your operating conditions,
the exhaust port may become blocked with carbon deposits.
If you notice a power loss with your gas powered tool, you
may need to remove these deposits to restore performance.
We highly recommend that only qualified service technicians
perform this service.
cLEANING THE AIR FILTER ScREEN
See Figure 15.
For proper performance and long life, keep air filter screen
clean.
Remove the air filter cover by pushing down on the latch
with your thumb while gently pulling on the cover.
Brush the air filter screen lightly to clean.
Replace the air filter cover by inserting the tabs on the
bottom of the cover into the slots on the air filter base;
push the cover up until it latches securely in place.
Page 10 — English