Not for
Reproduction
Troubleshooting the Mower
Locate & repair damaged
wire.
Electrical wiring damage.
Mower does not engage
Recharge battery and
check alternator. See
Battery Service.
Battery voltage too low.
Troubleshooting Common Cutting
Problems
Problem: Streaking
Remedy
Cause
Sharpen your blades.
Blades are not sharp.
Replace your blades.
Blades are worn down too far.
Always mow at full throttle.
Engine speed is too slow.
Slow down.
Ground speed is too fast.
Clean out the mower.
Deck is plugged with grass.
Overlap your cutting rows
Not overlapping cutting rows enough.
When turning your effective cutting
width decreases–overlap more when
turning.
Not overlapping enough when turning.
Problem: Scalping
Remedy
Cause
Roll or level the lawn.
Lawn is uneven or bumpy.
Raise the cutting height.
Mower deck cutting height is set too
low.
Slow down.
Ground speed is too fast.
Correctly level the deck.
Deck is not leveled correctly.
Check and inflate the tires.
Tire pressure is low or uneven.
Problem: Stepped Cutting
Remedy
Cause
Level the deck correctly.
Deck is not leveled correctly.
Check and inflate the tires.
Tires are not properly inflated.
Replace the blades.
Blades are damaged.
Repair or replace the deck.
Deck shell is damaged.
Problem: Stepped Cutting
Repair or replace the spindle.
Mower spindle is bent or loose.
Reinstall the blades correctly.
Blades are installed incorrectly.
Problem: Uneven Cutting
Remedy
Cause
Level the deck correctly.
Deck is not leveled correctly.
Sharpen or replace the blades.
Blades are dull or worn.
Replace the blades.
Blades are damaged.
Clean out the deck.
Deck is clogged with grass clippings.
Repair or replace the deck.
Deck shell is damaged.
Repair or replace the spindle.
Mower spindle is bent or loose.
Reinstall the blades correctly.
Blades are installed incorrectly.
Check and inflate the tires.
Tires are not properly inflated.
Problem: Stingers
Remedy
Cause
Sharpen your blades.
Blades are not sharp or nicked.
Replace your blades.
Blades are worn down too far.
Always mow at full throttle.
Engine speed is too slow.
Slow down.
Ground speed is too fast.
Clean out the mower.
Deck is plugged with grass.
Specifications
Specifications
NOTE: Specifications are correct at time of printing and are
subject to change without notice.
ENGINE
Fits models: 5900840
25 Gross HP† Kawasaki
Kawasaki
Make
FH721V
Model
41.2 Cu. in (675 cc)
Displacement
12 volt, 13 amp alternator; Battery: 340
cca
Electrical System
2.0 US qt. (1.9 L) w/ filter
Oil Capacity
Fits models: 5901025 & 5900563
25.5 Gross HP† Kawasaki
Kawasaki
Make
FX801V
Model
39