Replacing The Blade - MTD 25B-551A700 Operator's Manual

,_1_ WARNING:Disconnect t he spark plug
wire and groundagainst the enginebefore
performingany adjustment, repairsor maintenance.
Lubrication
Engine
Refertothe Engine Manual p acked withyouredgerfora
detailed description of all engine-related s ervicespecs.
Wheels
Lubricatethe wheelsand bearingsat least oncea
seasonwith a lightoil. Also if thewheels are removedfor
any reason,lubricatethe surfaceof the axle boltand the
inner surfaceof the wheelwith lightoil.
Pivot Points
Lubricatethe pivot pointson the blade controlbail and
bladedepthcontrol lever
Bearing Block
Lubricatethe bearingblock oncea season,or as needed
by simplyapplyingoil at eachend of thecover plate,
Figure6-1.
f
Lubricate
Figure 6-1:Lubricate t hebearing block asneeded.
Figure6-2: Loosenthe locknut and removebelt.
3. Removethe spindlesheavesbelt guardby removing
the two self-tappingscrewswhich secureit to the
bladeplateassembly.
4. Usetwo wrenches(one wrenchto preventthehex
bolthead fromspinningand the otherto removethe
flangenut) to removethe edger blade,Figure6-3.
Flange Nut
\
Belt
Guard
Figure 6-3:Remove t heblade.
Replacing the Blade
WARNING:The edgerblade is sharp. Wear leather
work glovesto protectyourhands when working
around the edgerblade.
WARNING:Disconnectthe spark plugwire and
groundagainst enginebefore performingthe follow-
ingsteps.
1. Workingin front of the edger,loosentheflange lock
nuton top of frame,allowingthe idler pulleyassembly
to pivot slightlyout from theframe,Figure6-2.
2. With yourotherhand,carefullyreachunderthe
rear of the unitand removethe beltfrom aroundthe
engineflywheelpulley.
5. Removeand discardthe edgerblade but retainthe
flangenut.
6. Installthe replacementedgerblade and the flangenut
removed earlier.
IMPORTANT:Usea torquewrenchto tighten theflange
nutto between37 foot-lbs,and 50 foot-lbs.
7. Reinstall t he spindlebeltguard with the self tapping
screwsremoved earlier.
8. Carefullyplacethe drivebelt backonto theengine
flywheelpulley,and retightentheflangelock nut on
the top of the frame.
IMPORTANT:Makecertainthat the drivebelt is
seatedcorrectlyon the blade spindleand that it is riding
smoothlyon the spindlesheavesand is notpinched
betweenthem.Repeatthe first threestepsif the beltis
pinched.
11
Maintaining
WARNING
The edger blade is sharp.
Wearleatherworkgloves
to protectyour hands
whenworkingaround the
edgerblade.
Disconnect the spark
plugwire and ground
against the engine
before performingany
adjustment, repairs or
maintenance.
Specifications are
subjectto changewithout
notification or obligation.
imagesmay not reflect
your exact model and are
for reference purposes
only.