Maintenance - Black Max BM25CSEDG Operator's Manual

Normal maintenance, replacement or repair of emission con-
trol devices and systems may be performed by any qualified
repair establishment or individual with original or equivalent
parts. Warranty and recall repairs must be performed by a
authorized service center; please contact customer service
for assistance.
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.
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:
When servicing, use only recommended or equivalent
replacement parts. Use of any other parts could create
a hazard or cause product damage.
NOTICE:
Periodically inspect the entire product for damaged,
missing, or loose parts such as screws, nuts, bolts, caps,
etc. Tighten securely all fasteners and caps and do not
operate this product until all missing or damaged parts
are replaced. Please contact customer service or a quali-
fied service center for assistance.
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 could result in serious personal
injury.

MAINTENANCE

LINE REPLACEMENT
See Figure 16.
Use only .095 in. trimmer line. Use original manufacturer's
replacement line for best performance.
 Stop the engine and disconnect the spark plug wire.
 Rotate the bump knob clockwise as necessary to align the
arrows on the bump knob with the arrows on the string
head housing.
 Cut one piece of trimmer line 16 ft. long. Insert the line
into the eyelet on the string head housing. Push until the
end of the line comes out the other side of the housing.
Pull the line until equal amounts of line appear on both
sides of the housing.
NOTE: Line may jam if more than 16 ft. is loaded.
 Rotate the bump knob clockwise to wind the line on the
spool until approximately 6 in. of line is showing on each
side.
 Push the bump knob down while pulling on line(s) to
manually advance the line.
CLEARING LINE JAM AND/OR REPLACING
BUMP KNOB
See Figures 17 - 18.
 Stop the engine and disconnect the spark plug wire.
 Depress the tabs on the side of the string head housing
to remove the lower string head housing.
NOTE: The housing is spring loaded and will self eject
when the tabs are depressed. It is not necessary to re-
move the upper string head housing from the drive shaft.
 Push the spool and bump knob through the string head
housing and remove the string from the spool.
 If replacing the bump knob, remove the old knob from
the spool. Align the knob ribs with the spool slots and
place the new bump knob onto the spool. If you are not
replacing the bump knob, skip this step.
 Insert the bump knob and spool assembly through the
opening in the string head housing.
 Align the slots on the lower string head housing with the
tabs on the upper string head housing.
 Push the housing together until the tabs snap into place.
NOTE: Hold the spool by the knob while completing the
installation.
 Install line as described in Line replacement.
Page 10 — English