Black & Decker DN402 Manual

Blacks, B acker
DN402 0 Electric Chainsaw
' /' '« * * J T
Instruction leaflet
Know your chainsaw;
read all of this leaflet
carefully before using
the achine.

Safety rules for chainsaws
Your Clothing
• Wear close-fitting and protective clothing, including safety
helmet, goggles, safety shoes and gloves
• We recommend strong gardening gloves and rubber foot ear
for outdoor use
Your Work Area
• Don't use your chainsa in damp or et conditions
• Keep children and all other onlookers at a safe distance from
your ork area, or here you are felling a tree
Your Work
• Use clamps or chocks to hold your ork
• Use edges to help control felling, and to prevent trapping the
sa chain and guide bar in the cut See the page on 'Ho to use
your chainsa ’ for details
Your Chainsaw
• Keep your chainsa clean ith a dry cloth - don’t use any
solvents, or cleaning fluids.
• Don’t allo dirt, oil or sa dust to build up on your
chainsa
• Make sure that the air inlet and outlet slots remain clear at all
times - they ust not become clogged
• Keep the chain sharp and make sure that both the chain and its
guide bar are clean and ell oiled. The chain must lit snugly
on the guide bar
• Do not use a chainsa hich is damaged, not properly
adjusted, or not completely and securely assembled
Your Position
• Be sure of youi footing and balance at all times
• Do not over-reach
• Pre-plan a safe exit from a falling tree or branches See the
page on 'Ho to use your chainsa for details.
• Be specially careful hen using your chainsa in a kneeling
position
• Do not try to operate your chainsa hile in a tree or on
a ladder 01 on any other unstable surface.
These positions are EXTREMELY DANGEROUS.
Making Your Cut
• Make sure the chain is not touching anything before you
s itch on
• Hold the chainsa firmly ith both hands hen the motor is
running, use a firm grip ith thumbs and fingers encircling the
handles
• Keep all parts of your body and clothing a ay from the chain
hen it is running
• Watch carefully hat you cut
• BEWARE OF KICKBACK!
Kickback is hen the chainsa jerks up ards or back ards
It can be caused by
hitting branches or other objects accidentally ith the lip ot
the sa hile the chain is moving;
- hitting metal, cement, or other hard materials near the ood,
or buried in the ood;
- a blunt or loose chain,
- cutting above shoulder height,
- lack of attention to holding or guiding the sa hile cutting;
- overnalancing
• Be very careful hen cutting small size brush and saplings
because thin material may be caught in the chain and be
hipped to ards you, or pull you off balance
• Be alert for spring-back hen cutting a branch under tension,
so that you ill not be struck hen the tension is released
Switching Off
• Always re e ber that the chain will continue
to run for a short ti e after the saw has
been switched oft.
• Release the trigger-s itch and ait for the chain to stop before
you put the sa do n
• Don't touch or try to stop the moving chain ith your hand
Plug and Cable
• Remove the plug from the mains before
- moving to ork in a different place;
- adjusting the sa ,
- cleaning the sa ;
- if the cord gets tangled or damaged
• Never jerk the cable to disconnect the plug from the socket
• Don’t abuse the cable, and check it frequently for damage
• Keep the cable a ay from heat, oil, and sharp edges
Carrying and Storage
• Carry your chainsa ith the mams supply disconnected
• Carry your sa by the front handle ith the chain pointing ;■■■
behind you
• Never carry your sa by the cable.
• Store all parts of your chainsa in a dry, secure place out ot
reach of children
• If you're not going to use your sa foi some time, remove the,
chain and guide bar and keep them immersed in chain oil.
Safety features
Black & Decker has designed into your chainsa the follo ing
additional safety features
1 A LOCK OFF SWITCH to prevent accidental operation
2 A FLANGE AROUND THE SWITCH HANDLE to guard against
the unlikely occurrence of a broken chain
3 A FRONT HAND GUARD to protect your hand in the event of
kickback or branches springing back into the chain sa
4 A CHAIN CATCHER situated on the under part of the side frame
hich is intended to reduce the possibility of a broken chain
being thro n out of the machine
5 A SHORT CABLE AND PLUG to allo quick and easy isolation
from the mains supply
Do not use your chainsaw if any of these features
become loose, damaged, or are missing

Preparing for use
Caution - always use protective gloves when handling the chain.
Chain Oiling specification
You must dn this henever you use a ne chain tor the first time Viscosity - 49 C St at +50°C
Take the ne chain out of its plastic bag and soak it in chain oil for Pour point - approx - 40°C
at least an hour before you use it NEVER USE
Use Black & Decker chain oil (1091 ) or any chain oil ith this 9 aste oil • thick oil • very thin se ing-machine oil
These may seriously harm your machine
Asse bly
1 Check that the chamsa is
disconnected from the mains
Check that the clamp bar and clamp
plate are clean Put the clamp plate,
clamp nut, and spanner supplied on
the bench here you can reach them.
2. Stand the chainsa on its side like
this on a bench or table
Follow this procedure with your
new chainsaw , and when you
re -a sse ble the saw w ith a new
chain or after storage.
Fit the sa chain over the guide bar
making sure that the chain is the
right way round.

V /
3. Fit the cla p bar and raised stud
into the slot in the guide bar
4 Check that the chain is still seated
on the sprocket wheel
Hold the chain onto the guide bar, tilt
the bar, and put its slotted end and the
loop of chain into the opening in the
saw body
5
1 Loop the chain around the
wheel
2. Move the tension lever so that its
peg fits into the left-hand hole in the
guide bar
______________________
You ust correctly set the chain tension belore you fully tighten the nut and use the saw
Setting Chain Tension
Re e ber to wear protective gloves.
1. Check that the chainsaw is
disconnected tro the ains
2 Put the chainsaw upside-down on a
flat surface
3 Make sure the cla p nut is only
finger tight
4 Pull the tension lever this way to
increase tension
5 Tighten the cla p nut
Do not overtension the
chain as this will reduce
the life of the chain and
guide bar.
When running in a new saw chain -
1 Run the saw for a couple of inutes
while continually oiling the chain
2 Switch off and unplug fro the
ains supply
Check that you can - ,
• pull the chain s oothly around
the guide bar;
• pull the chain about 3 away
fro the guide bar using finger
and thu b.
If the tension is not right, re-adjust it
3. Re adjust and re-oil the chain
4 Re-check the chain tension
repeatedly during the first few hours
use, as the chain will stretch during
this period If you have to adjust
your chain frequently after this initial
stretching period, your saw is
probably being overloaded while
cutting. Try cutting with less force -
it will cut just as quickly

Oiling
1 Make sure that the surrounding area is ciear of
sa dust and other debris
2 Unscre the oil filler cap
3 Fill the reservoir ith the recommended chain oil
You can see the oil level in the indicator slot
4 Replace the filler cap and ipe off any surplus oil
ith a clean, dry cloth - do not use any solvents
or cleaning fluids
5 Press the oiling button several times until you see
oil flo ing over the sa chain above the clamp
plate
6 Press the oiling button at least once before every
cut. n d press it every ten seconds ith your left
thumb hile you are actually cutting
^l^halruTitJS^E^ile(nreque3^vhilHh^hairnwunnm^^S
a nd c u ttin g II it is n ot. th e c ha in an d th e b ar w ill w e a r ou t ve ry
q u ic k ly
Periodically s itch off and check the oil level in the
indicator. If it is less than '/< full, disconnect the
sa from the mains and refill ith the correct oil
Yo u u s t u se th e o ilin g bu tton to g et a x i u lite a nd effic ie nc y
fro yo u r ch a in s a w R e e b e r lh a l you c an n ot o ve r o il yo ur s aw
c h ain a
Electrical
1 Start by deciding ho long you
ant your extension cable to be The
longer it is, the thicker the ire must
be to keep the total electrical
resistance lo .
•Choose the size of cable from this
table
length Cable rating Conductoi sue
Up to 15m
15-30m
30-60m
6 amp
10 amp
15 amp
0 ZSmm2
1 00mm2
1 50mm2
Your sa has a ‘lock-off’ type s itch
for safety You must press the lock
button before you can pull the
trigger-s itch When you let go of
the s itch, the lock button
automatically re-engages to prevent
accidental operation of the s itch
Use an A C po er point of the
correct voltage for your sa This is
sho n on the arning label Never
use a light socket
Your chainsa is doufcle insulated,
hich means that there is an extra
insulation barrier bet een the
electrical and mechanical parts
How to use your chainsaw
Use your chainsaw to cut wood only. Don’t force the saw - it will do a
better and safer job at the speed for which it was designed.
If the sa chain or bar becomes
jammed -
• s itch off
• disconnect from the main supply
• open the cut ith edges to relieve
the strain on the guide bar
Don't try to rench the sa free
Accessories
E X T E N S IO N C A B L E 1 0 8 8 C H A IN O IL (1 L IT R E ) 1 091
R E P L A C E M E N T C H A IN 3 0 5 m m 1 0 9 2 S H A R P E N IN G K IT 1 0 9 3

When felling
1 Pm plan the direction ol fall
and your o n escape route at
<15 to the direction ot la!1
When logging
Ho you should cut depends on ho
the log is supported
- Supported along its whole
length
make one do n ard cut but
avoid cutting earth as this
ill Muni your sa chain very
quickly
2 Cul 1 /3 ol the diameter ol the tree
nonzontally on the side you ant it
to tall Then cut do n Irom above
to make a notch of about 45'’ This
ay you' ill avoid pinching the sa
Direction ol tail
3 Make a single felling cut horn the
o'her side but stop belore you cut
through to the notch
4 Drive a edge or edges into the
telling cut lo open it and drop the
tree \
l ' - L in
■ p
k
Supported at both ends
first cut 1/3 do n, to avoid
splintering
Supported at one end
first cut 1/3 up. lo avoid
splintering
then cul do n, to prevent pinching.
On a slope
Al ays stand on the uphill side
Downhill side
When li bing -
Keep the log otl the ground
Don’t remove supporting limbs until
you have cut the log into lengths

General care and aintenance
Regular aintenance will give your chainsaw a long, effective
life. The ore you use your chainsaw, the ore often you should
aintain it.
Frequently
Oil the chain. Use plenty ol oil hen cutting it’s cheaper than a
ne bar or chain.
Every few hours
6. Check the cable tor signs ot damage or aging Do not use the
sa it the cable is in poor condition
7. With a sprocket-nosed bar, oil the spindle every t o hours ot -
use
Saw Chain Sharpening
Sharpen the chain at regular intervals to get the best out of it
You ill need a Black & Decker sa chain sharpening kit (see
’Accessories']
On each tooth, this is the cutter
and this is the depth-gauge, limiting the depth ot cut to this
1 File from the inside to the outside of the cutters only
2. Put the file-holder ith its tile on a cutter, keeping thisjine
parallel ith the chain ^ -
An
3. Hold the file level, press against the cutter, and make 2 or 3
light strokes for ard. Don't be heavy-handed.
Replace
1. Remove the chain and guide bar
2. Clean the chain and guide bar thoroughly Pay particular
attention to the oil hole and groove in the bar, and the oil nole
in the bar mount on the machine
3 Check the guide bar for ear Remove light burrs ith a flat file;
heavy burrs mean ’replace’ - see next column
4 Oil the sprocket spindie ith a fe drops of chain oil, and
check that the sprocket isn’t badly orn If it is, see return'.
5 Re-assemble the guide bar and chain, fitting the bar the
other way round.
This ill distribute the ear evenly around the guide bar rails.
• The chain hen it has been re-sharpened many limes, or
it the links become orn or stiff due to lack of maintenance
Make sure that the replacement is a 10 mm pitch lo -profile
safety chain, and remember to soak it in chain oil for an hour
before fitting it See Accessories’ for suitable chains
• The guide bar ith every second ne chain, and at any
time it there is
-- spreading of the rails giving a very ide groove.
- uneven rail ear,
- heavily orn rails giving a shallo groove;
. - cracking of the bar surface This is due to overheating
caused by lack of oil
Return
your sa to Black & Decker tor replacement pads to be fitted
if - the sprocket is badly orn,
or - the cable is in poor condition
You should not dis antle
the machine other than as described in this leaflet
4 Sharpen all the cutters on one side, then move to the other side
of the sa and file the rest
Depth gauges
Check depth gauges every third sharpening You ill need a
medium-grade flat file as elt as the filing gauge in the '
sharpening kit
1. Put the filing gauge on the chain over each depth gauge in turn
2. If a depth-gauge protects, file it level
3. Finally, round oft the corners of the depth-gauges

0 Blacks, Decker 0
AUSTRALIA WIDE SERVICE NETWORK
REGIONAL SERVICE CENTRES
VICTORIA:
580 ELIZABETH ST., MELB. 3000. PH 347 3688
MAROONDAH HIGH AY, NTH. CROYDON 3136
PH. 726 6666
373d SPRINGVALE ROAD ,
SPRINGVALE. 3171
PH 547 9603
NE SOUTH ALES:
31 GROSE STREET.,
NTH PARRAMATTA 2151
PH 630 8300
68 ALEXANDER ST., CRO S NEST, 2065
PH 439 6608
22 THROSBY ST., NE CASTLE 2293
PH. (049) 69 4366
ESTERN AUSTRALIA:
290 SCARBOROUGH BEACH ROAD,
OSBOURNE PARK, 6017
PH. 443 2611, 443 2198
TASMANIA:
67 ELIZABETH STREET, LAUNCESTON 7250
PH 31 6013, 31 8479
146a ELIZABETH STREET, HOBART 7000
PH. 34 6570
SOUTH AUSTRALIA:
194 RIGHT STREET, ADELAIDE 5000
PH. 51 3295, 51 3296
QUEENSLAND:
19 THOMPSON STREET, MAYNE 4006
PH. 52 4148, 52 4149
Please refer to Guarantee Card for full list of
Nationally Authorised Service Agencies
0 BLACK & DECKER (A SIA) PTY. LTD.
ARO O NDAH HIGHW AY,
CROYDON, VIC. 3136. P/N 967320 Rev. 1