Cutting Blades - MTD Shift-On-The-Go 760 Manual Del Operador

Cutting Blades
,_ WARNING: Be sure to shut the engine
off, remove ignition key,disconnect the
spark plug wire(s) and ground against
the engine to prevent unintended starting
before removing the cutting blade(s) for
sharpening or replacement. Protect your
hands by using heavy gloves or a rag to
grasp the cutting blade.
WARNING: Periodically inspect the blade
spindles for cracks or damage, especially
if you strike a foreign object. Replace
immediately if damaged.
The bladesmay be removedas follows.
1. Removethe deck from beneaththe tractor,(referto
CuttingDeckRemoval o n page23) thengently flip
thedeck overto expose its underside•
2. Placea blockof wood betweenthe centerdeck hous-
ing baffle and the cuttingbladeto act as a stabilizer.
See Fig. 6-5.
3. Removethe hexflangenutthat securesthe bladeto
the spindleassembly.See Fig.6-5.
4. Toproperlysharpenthe cuttingblades,removeequal
amountsof metalfrom bothends of the bladesalong
thecutting edges,parallelto the trailingedge,at a
250to 300angle.
IMPORTANT:If the cuttingedgeof the blade hasalready
been sharpenedto within 1 5/8" from theedge,or if any
metal separation is present,replacethe bladeswith new
ones. See Fig.6-6.
• It is importantthat eachcuttingblade edge be ground
equallyto maintainproperblade balance•
• A poorlybalancedbladewill causeexcessive
vibrationand maycausedamageto thetractorand
result in personalinjury.The bladecan be testedby
balancingit on a roundshaftscrewdriver. G rind metal
fromthe heavysideuntil it balancesevenly.
• Whenreplacingtheblade,be sureto installthe blade
with the sideof the blade marked"Bottom" (or with
a part numberstampedin it) facingthe groundwhen
the moweris in the operatingposition.
IMPORTANT:Usea torquewrenchto tighten the blade
spindlehexflangenutto between70 foot-poundsand 90
foot-pounds.
f
Figure 6-5
f
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Idlerpulleys
Idler pulleynuts
Figure 6-7
25
Maintaining
WARNING
Be sure to shut the
engine off, remove
ignition key, discon-
nect the spark plug
wire(s) and ground
against the engine to
prevent unintended
irting before remov-
the cutting blade(s)
for sharpening or
replacement. Protect
your hands by using
heavy gloves or a rag
to grasp the cutting
blade.
Periodically inspect
the blade spindles for
cracks or damage,
especially ifyou strike
a foreign object.
_laceimmediately if
damaged.