Blade Maintenance - Black & Decker GRC450 User Manual

This symbol indicates the lead acid battery
contained within this unit must be disposed
of properly and not discarded in everyday
Pb
household waste which may be disposed of
in an incinerator or landfill site.
Lead acid batteries can be harmful to the
-
+
environment and can explode when exposed
to fire. Do not incinerate.
The battery should be taken to a
Black & Decker authorised service agent,
your local dealer or your local recycling
station. If necessary, contact your local
authority for disposal information.
If the cutting performance begins to deteriorate,
please refer to the "Fault finding" guide.
Warning! Do not cross battery leads when
!
installing a new battery as this will cause the
blade to run in reverse until battery is
discharged. When you attempt to recharge
the battery, the charger circuit will be
destroyed as soon as you connect the
charger plug.
How to use your mower (Fig. F & G)
Observe all of the relevant warnings when
!
using your mower.
Warning! Never attempt to operate your
machine with one hand. You must guide
your machine with both hands.
Safety key
•
F
In order to prevent accidental start-up or
unauthorised use of your cordless
mower, a removable safety key has been
incorporated into the design of your
mower. The mower will be completely
disabled when this safety key has been
removed from the mower.
Warning! Always remove the safety key from
!
mower when leaving it unattended, even for
a short period of time.
•
Your safety key will be found in the
parts pack (plus one spare).
Starting
•
Lift the fuse cover (21).
•
Insert the safety key (23) into position
and push fully home.
•
Close the fuse cover (21).
•
Tilt the handle downwards to slightly
raise the front of the mower to reduce
the risk of lawn damage whilst starting.
•
G Your mower is equipped with a special
on/off switch lever. To operate your
mower, press the button on the switch
box then pull the lever towards you. Hold
in this position to keep the mower running.
6
GRC450/750 UK p01-18 w/p

Blade maintenance

!
Fitting a new blade (Fig. H)
!
H1
H2
6
•
To turn the mower off, just release the
lever. The spring-loaded "snap-action"
lever will relocate itself back into its
original position inside the switch housing.
When you have finished using your machine
we recommend that you clean all debris from
it before putting it away. It is important to
remove the safety key before cleaning. Please
refer to the "Care and maintenance" section.
Note: To obtain the best results cut your
lawn or grassed area regularly and do not
cut when the grass is wet.
If, when grasscutting, loose grass is seen to be
scattered from beneath the mower, the grass-
bag is probably full and should be emptied.
The steel blade is designed to give a fine
finish in long or tough grass. The blade will
continue to cut even when it has become
blunt or burred. There is no need for it to be
razor sharp.
If, however, because of damage or wear the
cutting performance deteriorates, then your
mower may require a new blade, or at least
the existing blade to be sharpened.
We recommend that the steel blade is
sharpened or a new blade fitted at the
beginning of each season.
Replacement blades are available from
Black & Decker service agents.
Warning! When fitting a new blade use only
the Black & Decker replacement part
specified for your mower - do not attempt to
fit any other blade.
Observe all the relevant warnings before
changing the blade.
Warning! Remove safety key before
changing the blade.
•
Turn your machine over on its side so
that the underside of the cutter deck is
exposed.
•
Wear gloves to protect hands.
•
Using a cloth placed over the blade or
heavy duty gloves to protect your hands,
grip the blade and, using the spanner
provided, loosen and remove the nut from
the motor spindle. Turn the nut in an anti-
clockwise direction to loosen it.
•
Remove nut (18), square washer (17),
clutch plate (16) and blade.
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