MTD YM75 manual Troubleshooting Guide, Trouble Possible Causes Corrective Action

SECTION 8: TROUBLESHOOTING GUIDE

Trouble	Possible Cause(s)	Corrective Action
ENGINE WILL	• Empty fuel tank	• Fill fuel tank with properly-mixed fuel
NOT START	• Primer bulb wasn’t pressed enough	• Press primer bulb fully and slowly 10 times
	• Engine is flooded	• Hold throttle control and pull starter rope until it starts
	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
	• Fouled spark plug	• Replace or clean spark plug
	• Plugged spark arrestor	• Clean or replace the spark arrestor
	• EZ-Start lever was not set	• Move lever to start
ENGINE WILL	• Air filter is plugged	• Replace or clean the air filter
NOT IDLE	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
	• Improper carburetor adjustment	• Adjust according to the Carburetor Adjustment section
ENGINE WILL	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
NOT	• Improper carburetor adjustment	• Take to an authorized service dealer for adjustment
ACCELERATE
	• Cutting attachment bound with grass	• Stop the engine and clean the cutting attachment
	• Dirty air filter	• Clean or replace the air filter
	• Plugged spark arrestor	• Clean or replace spark arrestor
ENGINE	• Old or improperly mixed fuel	• Drain gas tank and add fresh fuel mixture
LACKS	• Improper carburetor adjustment	• Take to an authorized service dealer for adjustment
POWER OR
	• Fouled spark plug	• Replace or clean spark plug
STALLS WHEN
	• Plugged spark arrestor	• Clean or replace the spark arrestor
CUTTING
CUTTING	• Cutting attachment bound with grass	• Stop the engine and clean cutting attachment
ATTACHMENT	• Cutting attachment out of line	• Refill with new line
WILL NOT
	• Inner reel bound up	• Replace the inner reel
ADVANCE LINE
	• Cutting head is dirty	• Clean inner reel and outer spool
	• Line welded	• Disassemble, remove the welded section and rewind
	• Line twisted when refilled	• Disassemble and rewind the line
	• Not enough line is exposed	• Push the bump knob and pull out line until 4 inches
		(102 mm) of line is outside of the cutting attachment
CUTTING LINE	• Oil is in the cutting head	• Clean the cutting head attachment
ADVANCES
WILDLY

If further assistance is required, contact your authorized service dealer

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