Yard-Man YM70SS Operator's Manual page 13

ENGINE WILL NOT START
C A U S E
Empty fuel tank
Primer bulb wasn't pressed enough
Engine is flooded
Old or improperly mixed fuel
Fouled spark plug
Plugged spark arrestor
The outside temperature is below 40º F
The outside temperature is above 90º F
ENGINE WILL NOT IDLE
C A U S E
Air filter is plugged
Old or improperly mixed fuel
Improper carburetor adjustment
ENGINE WILL NOT ACCELERATE
C A U S E
Old or improperly mixed fuel
Improper carburetor adjustment
Cutting attachment bound with grass
Dirty air filter
Plugged spark arrestor
ENGINE LACKS POWER OR STALLS WHEN CUTTING
C A U S E
Old or improperly mixed fuel
Improper carburetor adjustment
Fouled spark plug
Plugged spark arrestor
CUTTING ATTACHMENT WILL NOT ADVANCE LINE
C A U S E
Cutting attachment bound with grass
Cutting attachment out of line
Inner reel bound up
Cutting head dirty
Line welded
Line twisted when refilled
Not enough line is exposed
CUTTING LINE ADVANCES UNCONTROLLABLY
C A U SE
Oil, cleaner or lubricant in cutting head
If further assistance is required, contact your authorized service dealer.
TROUBLESHOOTING
A C T I O N
Fill fuel tank with properly mixed fuel
Press primer bulb fully and slowly 10 times
Place blue choke lever in position 3, squeeze the trigger and
pull the starter rope
Drain gas tank and add fresh fuel mixture
Replace or clean the spark plug
Clean or replace spark arrestor
Place blue choke lever in position 3, pull the starter rope up to
10-15 times
Place blue choke lever in position 3, squeeze the throttle control
and pull the starter rope
A C T I O N
Replace or clean the air filter
Drain gas tank and add fresh fuel mixture
Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
A C T I O N
Drain gas tank and add fresh fuel mixture
Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
Stop the engine and clean the cutting attachment
Clean or replace the air filter
Clean or replace spark arrestor
A C T I O N
Drain gas tank and add fresh fuel mixture
Adjust according to the Carburetor Adjustments section or take
to an authorized service dealer for an adjustment
Replace or clean the spark plug
Clean or replace spark arrestor
A C T I O N
Stop the engine and clean cutting attachment
Refill with new line
Replace the inner reel
Clean inner reel and outer spool
Disassemble, remove the welded section and rewind
Disassemble and rewind the line
Push the bump knob and pull out line until 4 inches (102 mm) of
line is outside of the cutting attachment
A C T I O N
Clean and thoroughly dry the cutting head
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