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Service
4
8
Maintenance
General Recommendations
• Always observe safety rules when performing
any maintenance.
• The warranty on this string trimmer does
not cover items that have been subjected to
operator abuse or negligence. To receive full
value from warranty, operator must maintain
the string trimmer as instructed here.
• Changing of engine-governed speed will void
engine warranty.
• All adjustments should be checked at least
once each season.
• Periodically check all fasteners and make sure
these are tight.
WARNING: Always stop engine, allow
engine to cool, disconnect spark plug,
and ground against engine before
performing any type of maintenance on
your machine.
Lubrication
1. Lubricate pivot points on the engine control
lever at least once a season with light oil. This
control must operate freely in both directions.
See Figure 4-1.
Figure 4-1
2. On 280 Series models equipped with a drive
control, also lubricate pivot points on the drive
control lever at least once a season with light
oil. This control must operate freely in both
directions. See Figure 4-2.
Figure 4-2
3. Lubricate the wheels at least once a season
with light oil (or motor oil). If wheels are
removed for any reason, lubricate surface of
the axle bolt and inner surface of the wheel
with light oil. See Figure 4-1.
4. Follow the Engine Operator’s Manual for
lubrication schedule and instruction for
engine lubrication.
Deck Care
Clean underside of the machine after each use to
prevent build-up of grass clippings or other debris.
1. Allow engine to run until it is out of fuel. Do
not attempt to pour fuel from the engine.
Disconnect spark plug wire.
2. Tip trimmer so that it rests on its side. Keep
the side with the air cleaner facing up. Hold
trimmer firmly.
WARNING: Never tip the trimmer more
than 90º in any direction and do not leave
the trimmer tipped for any length of
time. Oil can drain into the upper part of
the engine causing a starting problem.
3. Scrape and clean the underside of the
machine with a suitable tool. Do not spray
with water.
IMPORTANT: Do not use a pressure washer
or garden hose to clean the machine. These
may cause damage to the engine. The use of
water will result in shortened life and reduce
serviceability.
4. Put the trimmer back on its wheels on the
ground.
Engine Care
A list of key engine maintenance jobs required for
good performance by the trimmer is given below.
Follow the accompanying engine manual for a
detailed list and instructions.
• Maintain oil level as instructed in Engine
Operator’s Manual.
• Service air cleaner every 25 hours under
normal conditions. Clean every few hours
under extremely dusty conditions. Poor
engine performance and flooding usually
indicates that the air cleaner should be
serviced. To service the air cleaner, refer to the
Engine Operator’s Manual.
• Clean spark plug and reset the gap once
a season. Spark plug replacement is
recommended at the start of each mowing
season. Check Engine Operator’s Manual for
correct plug type and gap specifications.
• Clean engine regularly with a cloth or brush.
Keep the top of the engine clean to permit
proper air circulation. Remove all grass, dirt
and debris from muffler area.
• Engines stored between 30 and 90 days need
to be treated with a gasoline stabilizer to
prevent deterioration and gum from forming
in fuel system or on essential carburetor parts.
Off-Season Storage
Take the following steps to prepare your trimmer
for storage. Refer to Engine Operator’s Manual for
specific engine storage instructions.
• Clean and lubricate trimmer.
• Store trimmer in a dry, clean area. Do not store
next to corrosive materials, such as fertilizer.
• Using a light oil or silicone, coat the
equipment, especially cables and all moving
parts of your string trimmer.
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