MTD 070 Series Operator's Manual page 11

Figure 12
4. Removebladeand adapterfrom the crankshaft.
5, The blademay be resharpenedby removingitand
eithergrindingor filing thecuttingedge keepingas
closeto the original bevelas possible.Donot attempt
to sharpenthe bladewhile itis stillon the mower,
6. it is extremely importantthat eachcuttingedge
receivesan equal amountof grindingto preventan
unbalancedblade.
NOTE:improperblade balancewill resultin excessive
vibrationcausingeventualdamageto theengine and
mower. Be sureto carefullybalancebladeafter sharpen-
ing.Possibledamageresultingfrom bladeunbalance
conditionisnotthe responsibility of the manufacturer.
NOTE:Alwaysremovebladefrom the adapterfor testing
balance.
7. The bladecan be testedfor balanceby balancingit
on a round shaftscrewdriver. R emovemetalfrom the
heavyside untilit balancesevenly.
8. Beforereassembling the bladeand the blade adapter
to the unit, lubricatethe enginecrankshaftand the
innersurfaceof the bladeadapterwith lightoil.
9. install the bladeadapteron thecrankshaftwith the
"star"awayfromthe engine.See Figure12.Place
the bladewith the side marked"bottom"(or with part
number)facingawayfrom the adapter.Alignthe
blade bell supportoverthe bladewith the tabs in the
holesof the bladeand insert t he hex bolt.
10.Tightenthe hexbolt to thetorquelisted below:
Blade Mounting Torque
CenterBolt450 in.lb.rain.,600 in.lb, m ax.
Toinsure safe operationof your unit, ALL nutsand bolts
mustbe checkedperiodically for correcttightness.
mowerfor storage.
1. Cleanand lubricatemowerthoroughlyas describedin
the lubricationinstructions.
2. Wedo not recommendthe useof a pressurewasher
or gardenhoseto cleanyour unit.
3. Referto engine manualfor correctengine
storageinstructions.
4. Coatmower'scutting bladewith chassisgreaseto
preventrusting.
5. Storemowerin a dry, cleanarea. Do notstore nextto
corrosivematerials,such as fertilizer.
NOTE:Whenstoringany type of powerequipmentin
a poorlyventilatedor metal storageshed, careshould
be takento rust-proofthe equipment.Usinga light oil or
silicone,coat the equipment,especiallycablesand all
movingparts of yourlawn mowerbeforestorage.
11
WARNING
When removing
the cutting blade
for sharpening or
replacement, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade, ...........;
An nba anced b ade
will cause excessive
vibration when rotat,
:ing at high speeds;it
may cause damage
to mower, and could
tea, c ausing per,
sonal injury,