12A-566Q795 MTD lawn mower

User Manual - Page 11

For 12A-566Q795.

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Blade Care
__i= ARNING:Whenremovingcutting
bladefor sharpeningor replacement,
protectyourhandswitha pairof heavy
gloves or usea heavy ragto hold blade.
1. Disconnectsparkplugwirefromsparkplug.Turn
moweron itssidemakingsurethattheairfilterand
thecarburetorareup.
2. Removebolt,bladebellsupport,blade,andblade
adapterfromtheenginecrankshaft.SeeFigure5.
3. Thebladecanbe sharpenedwitha fileor on a grind-
ing wheel.Donotattempttosharpenthebladewhile
it isstillon themower.Whensharpeningblade,follow
originalangleofgrind.Grindcuttingedgesequallyto
keepbladebalanced.
4. Removebladefromtheadapterfortestingbalance.
Balancethebladeona roundshaftscrewdriverto
check.Removemetalfromtheheavysideuntilit
balancesevenly.
_ WARNING:Anunbalanced bladewill
causeexcessivevibration whenrotating
athigh speeds, itmay causedamage
to mower,and could breakcausing
personalinjury.
5. Lubricatetheenginecrankshaftandtheinnersurface
ofthebladeadapterwithlightoil.Slidetheblade
adapterontotheenginecrankshaft.Placetheblade
on theadaptersuchthatthesideoftheblademarked
"Bottom"(orwithpartnumber)facesthegroundwhen
themowerisin theoperatingposition.Makesurethat
bladeisalignedandseatedon bladeadapterflanges.
6. Placebladebellsupportonthe blade.Alignnotches
on thebladebell supportwith smallholesin blade.
Replacehexboltandtightenhexboltto torque:450
in.Ibs.min.,600 in.Ibs.max.
Toensuresafeoperationofyourmower,periodically
checkthebladeboltforcorrecttorque.
Belt Care
1. Removetwoshoulderscrewssecuringfrontdrive
covertomowerdeck.SeeFigure6. Pressinwardon
sidesoffrontdrivecoverand releasetabsthat secure
it totheheightadjusterbrackets.Removedrivecover
frommower.
.
Loosenscrewholdingbelttensionspringtotrans-
mission.SeeFigure6 inset.Donotremovescrew
completely.Asyouloosenit, tensiononthebeltwillbe
released.
.
Pushtransmissionup a littleandslidebeltoffthe
transmissionpulley.Lift mowertoaccessbeltfrom
undersideofmower.Slidebeltoff ofenginepulleyand
aroundtheblade.SeeFigure7.
Figure 5
Figure 6
Figure 7
4. Replacewith newbelt,workingaroundblade.Make
surebeltisfirmlyseatedonenginepulleywhile
pullingfromtheothersideand slidingitaroundthe
transmissionpulley.Tightenscrewloosenedearlier
tosecurebelttensionspringtothetransmission.
Reassemblefrontdrivecover.
11
_ _ i i i iii _ _ ii _i ii ii
Maintaining
You r LaWn
MOwer
WARNING
When removing
the cutting blade
for sharpening or
replacement or
when sliding the belt
around it, protect
your hands with a
pair of heavy gloves
or use a heavy rag to
hold the blade.
An unbalanced blade
will cause excessive
vibrationwhen rotat-
ing at high speeds. It
may cause damage
to mower, and could
break causing per-
sonal injury.
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