MTD YARD-MAN YM90 Manuel De L'utilisateur page 22

SECTION 8: TROUBLESHOOTING GUIDE
Trouble
ENGINE WILL • Empty fuel tank
NOT START
• Primer bulb wasn't pressed enough
• Engine is flooded
• Old or improperly mixed fuel
• Fouled spark plug
• Plugged spark arrestor
• EZ-Start lever was not set
ENGINE WILL • Air filter is plugged
NOT IDLE
• Old or improperly mixed fuel
• Improper carburetor adjustment
ENGINE WILL • Old or improperly mixed fuel
NOT
• Improper carburetor adjustment
ACCELERATE
• Cutting attachment bound with grass
• Dirty air filter
• Plugged spark arrestor
ENGINE • Old or improperly mixed fuel
LACKS
• Improper carburetor adjustment
POWER OR
• Fouled spark plug
STALLS WHEN
• Plugged spark arrestor
CUTTING
CUTTING • Cutting attachment bound with grass
ATTACHMENT
• Cutting attachment out of line
WILL NOT
• Inner reel bound up
ADVANCE LINE
• Cutting head is dirty
• Line welded
• Line twisted when refilled
• Not enough line is exposed
CUTTING LINE • Oil is in the cutting head
ADVANCES
WILDLY
If further assistance is required, contact your authorized service dealer
Possible Cause(s) Corrective Action
• Fill fuel tank with properly-mixed fuel
• Press primer bulb fully and slowly 10 times
• Hold throttle control and pull starter rope until it starts
• Drain gas tank and add fresh fuel mixture
• Replace or clean spark plug
• Clean or replace the spark arrestor
• Move lever to start
• Replace or clean the air filter
• Drain gas tank and add fresh fuel mixture
• Adjust according to the Carburetor Adjustment section
• Drain gas tank and add fresh fuel mixture
• Take to an authorized service dealer for adjustment
• Stop the engine and clean the cutting attachment
• Clean or replace the air filter
• Clean or replace spark arrestor
• Drain gas tank and add fresh fuel mixture
• Take to an authorized service dealer for adjustment
• Replace or clean spark plug
• Clean or replace the spark arrestor
• 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
• Clean the cutting head attachment
22