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15. TROUBLESHOOTING GUIDE
Problem
MOWER VIBRATES
Not Cutting Clean
Blades Wear Fast
Blade Bolts Working Loose
Gearbox Noisy
RX96 03/09
© 2009 Alamo Group Inc.
OPERATION
Possible Cause
Blade locked back.
Drivelines not phased.
Blade broken.
Blade Carrier bent.
Blade Hub not properly
seated on Shaft.
New Blade matched with
worn Blade.
Blades dull.
Blade rotation incorrect.
Using Straight Blades.
Carrier RPM too low.
Mower not level.
Tractor tires mashing down grass.
Ground speed too fast.
Blades locked back.
Blades riding up due to blade bolt
wear.
Blades bent up.
Cutting in sandy or rocky conditions
Blades too soft.
Bolts not tightened.
Bolt hole elongated or oversized.
Locknut worn out.
Improper Backlash.
Rough gears.
Worn Bearing.
Operation Section 4-45
Remedy
Loosen locked Blade.
Replace Driveline.
Replace Blades in sets.
Repair or replace Carrier.
Remove Hub, check for wear
and replace or seat properly.
Replace Blades in sets.
Sharpen or replace Blades.
Use correct Blade for Carrier.
Use Fan Blades in grass.
Increase PTO speed.
Adjust machine level (in very
heavy weeds, 1/2" to 1" low in front).
Increase tire spread to 90"
Reduce ground speed.
Free blades.
Replace blade bolts.
Replace Blades.
Increase cutting height.
Replace Blades; with hardened,
high-quality, Alamo Industrial Blade
from the manufacturer.
Tighten Bolts to 300 ft./lbs.
Replace Blade Carrier.
Replace Locknut.
See your local Alamo Industrial Dealer.
Run in or change Gears.
Replace Bearing.
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