Toro 30144, Руководство оператора

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13
MAINTENANCE
CHECK BLADE SAIL AND SHARPENING
Both cutting edges and blade sail contribute to good
qualityofcut. The sail, the turned up portion opposite
the cutting edge, is important as it pulls grass up
straight, thereby producing an even cut. The sail
gradually wears down during operation, this condition
is normal. As the sail wears down, the qualityofcut will
degrade, although the cutting edges are sharpened.
The cutting edge of the blade must be sharp so the
grass is cut rather than torn. A dull cutting edge is
evident when tips of the grass appear brown and
shredded. Sharpen the cutting edges to correct this
condition.
1. Examine cutting ends of the blade carefully,
especially where the flat and curved parts of the blade
meet (Fig. 12A). Sand and abrasive material can wear
away the metal that connects the flat and curved parts
of the blade. Check the blade(s) before using the
mower. If wear is noticed (Fig. 12B), replace the
blade(s).
A
B
C
1081
Figure 12
2. Examine cutting edges of all blade(s). Sharpen the
cutting edges if they are dull or nicked. Sharpen only
the top of the cutting edge and maintain the original
cutting angle to make sure of sharpness (Fig. 13). The
blade will remain balanced if same amount of metal is
removed from both cutting edges.
DANGER
If blade is allowed to wear, a slot will form be
tween the sail and flat part of the blade
(Fig. 12C). Eventually a piece of the blade
may break off and be thrown from under the
housing, possibly resulting in serious injury to
yourself or bystanders.
SHARPEN AT THIS
ANGLE ONLY
END VIEW OF
BLADE
1080
Figure 13
Note: Remove the blades: refer to Removing Cutter
Blades, steps 2 and 3. After sharpening the cutting
edges, reinstall blade with antiscalp cup, flatwasher
and blade bolt. Blade sails must be on top of blade.
Torque blade bolt to 85-110 ft. lb.