Safety Manual
ENGLISH
   DANGER
The Operator’s Manual for your unit has specic 
starting instructions for your model and type 
of engine. For your safety and ease of starting, 
always follow these starting instructions, and 
obey the safety rules provided.
The cutting head/work attachment on units that 
require starting at wide-open (full) throttle (throt-
tle trigger fully depressed) will start moving 
immediately when the engine starts. 
To avoid loss of control and serious injury:
•  Stabilize unit on ground before pulling 
starter handle.
•  Stay clear of the cutting head/work 
attachment.
•  Keep the cutting head/work attachment off 
the ground and clear of objects that could 
be struck or become entangled. 
•  Release the throttle trigger immediately 
when engine starts.
Before starting the unit, make sure you know the location of the unit’s “STOP” 
switch, and know how to perform an emergency stop in case of a switch 
malfunction. (See “Stopping” page 24)
The cutting head/work attachment (nylon line head, blade, or PAS/SB 
attachment) must not move at idle, otherwise serious personal injury may 
result. Periodic carburetor adjustment may be necessary to assure the 
cutting head/PAS attachment does not move at idle. If the cutting head/
work attachment moves at idle, re-adjust carburetor according to “Carburetor 
Adjustment” instructions and idle speed specications provided in your 
Operator’s Manual. See your dealer or contact Consumer Support for help if 
you have any questions.
Follow these important safety rules when starting your unit:
•  DO NOT use unit if cutting head/work attachment moves while engine is 
idling (throttle trigger not depressed). Adjust idle speed as instructed in your 
unit’s Operator’s Manual before using unit. 
•  NEVER start or run your unit indoors or 
anywhere else where there is poor air 
circulation. Indoor operation produces 
dangerous levels of Carbon Monoxide, 
a colorless and odorless poisonous gas. 
Carbon Monoxide (CO) causes nausea 
and other u-like symptoms if breathed. 
Prolonged exposure to CO may cause loss 
of consciousness, brain damage, or death.
Grass Trimmer/Brush Cutter
MODELS,
Operator’s Manual
SRM- 311
SRM- 311S
SRM- 311U
WARNING DANGER
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Stabilize unit on ground
Do not operate indoors
22
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