Maintenance; General Recommendations; Cutting Blade - Yard-Man 13B-325-401 Operator's Manual

MAINTENANCE
General Recommendations
Always observe safety rules when performing
any maintenance.
The warranty on this rider mower does not cover
items that have been subjected to operator
abuse or negligence. To receive full value from
the warranty, operator must maintain the rider
mower as instructed in this manual.
• Changing of engine governed speed will void
engine warranty.
• Some adjustments will have to be made
periodically to maintain your unit properly.
• All adjustments in the Service and Adjustments
section of this manual should be checked at
least once each season.
Follow the maintenance schedule given below.
Periodically check all fasteners and make sure
these are tight.
WARNING: Always stop the engine and
disconnect the spark plug wire before
performing any maintenance or adjustment&
Cutting Blade
Removal
_, ARNING: Protect your hands by wearing
heavy gloves or using a rag to grasp the
cutting blade.
Remove the 5/8" hex flange nut which holds
the blade to the blade spindle,
Remove blade from the spindle. See Figure 25.
Deck
Spindle
Blade
Flange Nut
Figure 25
Sharpening
• When sharpening the blade, follow the original
angle of grind as a guide. It is extremely
important that each cutting edge receives an
equal amount of grinding to prevent an
unbalanced blade. An unbalanced blade will
cause excessive vibration when rotating at high
speeds, may cause damage to the mower and
could break causing personal injury.
• The blade can be tested for balance by
balancing it on a round shaft screwdriver.
Remove metal from the heavy side until it
balances evenly.
Reassembly
• Before reassembling the blade to the unit,
lubricate the spindle with light oil (or engine oil).
•
Be sure to properly align "star_ fitting on blade
with "star" on spindle.
•
When replacing the blade, be sure to install the
blade with the side of the blade marked
"Bottom" (or with part number) facing the
ground when the mower is in the operating
position.
Blade Mounting Torque: 70/90 foot-pounds
maximum.
NOTE: To ensure safe operation, all nuts and bolts
must be cheoked periodically for correct tightness.
ENGINE
Refer to the separate engine manual for engine
maintenance instructions.
Maintain engine oil as instructed in the separate
engine manual packed with your unit. Read and
follow instructions carefully.
Service air cleaner as per separate engine manuaI
under normal conditions. Clean every few hours
under extremely dusty conditions. Poor engine
performance and flooding usually indicates that the
air cleaner should be serviced. To service the air
cleaner, refer to the separate engine manual packed
with your unit.
The spark plug should be cleaned and the gap reset
once a season. Spark plug replacement is
recommended at the start of each mowing season;
check engine manual for correct plug type and gap
specifications.
NOTE: Your engine is equipped with a resistor spark
plug, When replacing plug, make sure to use resistor
type.
Fuel Filter
Your unit is equipped with a replaceable in-line fuel
filter. Replace filter whenever contamination or
discoloration is noticed. Order replacement filter
through your engine authorized service dealer,
Oil Drain Sleeve
Your rider mower has a plastic oil drain sleeve packed
with the loose parts for your convenience in draining
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