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OPERATION
GR60/72 02/07 Operation Section 4-40
© 2007 Alamo Group Inc.
OPERATION
15. TROUBLESHOOTING GUIDE
Problem Possible Cause Remedy
Not Cutting Clean Blades dull. Sharpen or replace Blades.
Blade rotation incorrect. Use correct Blade for Carrier.
Using Straight Blades Use Fan Blades in grass.
Carrier RPM too low. Increase PTO speed.
Mower not leveled. Adjust machine level (in very heavy
weeds, 1/2” to 1” low in front).
Tires mashing down grass. Use offset Adapter to move Mower to
the left.
Ground speed too fast. Reduce ground speed.
Blades locked back. Free blades.
Blades riding up due to Blade Replace Blade Bolts.
Bolt wear.
Blades bent up. Replace Blades.
Breaking Blade Bolts Operating with loose Blade Bolts. Tighten Blade Bolts to 300 ft./lbs.
(Left Hand Threads).
Worn Blade Bolt. Replace Bolt.
Cutting Too High Blades bent up. Replace Blades.
Blade Bolt Bushing broken or Replace or reweld Bushing. Weld with
loose. E7018 low Hydrogen rods.
Blade Carrier bent. Straighten or replace Blade Carrier.
Blades on upside down. Turn Blades right side up and tighten.
Mower Vibrates Blade locked back. Loosen locked Blade.
Drivelines not phased. Replace Driveline.
Blade broken. Replace Blades in sets.
Blade Carrier bent. Repair or replace Carrier.
Blade Hub not properly seated Remove Hub, check Key and Shaft,
on Shaft. and replace or seat properly.
New Blade matched with worn Blade. Replace Blades in sets.
Mower Windrowing Cutting heavy material. Raise Mower and reduce ground
speed.