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T ECHNICAL INFORMATION
Models No. UM401D
New Tool
Description 400mm Cordless Lawn Mower Switch lever is comfortable
to grip for long operation.
with lock-off button
CONCEPT AND MAIN APPLICATIONS Rear bag (Cut lawn is collected.)
Cutting height can
Model UM401DW is cordless lawn mower powered with 24V be adjusted
with lock-off button
lead battery. by the sigle lever.
Folding handle
Its effective cutting width by rotary blade is 406mm(16"). Its 6 different heights:
brief benefits are; 25mm(1")-
*No pollution owing to no exhaust gas and less noise 89mm(3-1/2")
*Can mow approx.75 min.. continuously(approx.
l200m )
1010mm(39.3/4")
from a single charge.
Without rear bag Mulching
With mulching plate (Scattering cut lawn to turf)
With rear bag Collecting cut lawn
Without mulching plate
Charge meter
*Chaging time shows how much
48
3Hr :.75% charge charge is left
2m
m
4Hr : Full charge 1316mm(51.3/4")
(1
9"
)
Model UM4OlDW is with Charger DC240. Cutting capacity Interlocking key for safety switch
Without key in position tool does
1200m2 from a single charge
not start unintendedly.
Charging time
4Hr Competitors' tools'charging time are 16-24Hr.
Mulching(scattering cut lawn to turf)
S pecifications can be performed without rear bag but with mulching plate
Motor DC 24V magnet motor
Battery 24V lead battery (15Ah)
No Load Speed 3800rpm
Effective cutting width 406mm(16")
Effective cutting height 25mm(1")-89mm(3-1/2") ------ 6 heights
Net Weight 31.9kg (70.3 lbs)
Standard equipment
Socket Wrench 13 ------------------------- 1 pc.
Wrench 32 ---------------------------------- 1 pc.
Key(for interlocking safety switch) ----- l pc.
Mulching Plate ------------------------------1 pc.
Optional accessories
Swing Saw Blade 406
Features and benefits
See the sheet attached for more information.
The standard equipment for the tools shown may differ form country to country.
Repair
*Cautions in repairing
Caution (1) : Be sure to turn off the interlock switch and take away the key before repairing for safety.
Caution (2) : This machine consists of the battery. If the curling has been removed, the battery and lead wire will be
exposed. Use care not to get a short circuit. Especially take care that the metal ruler and driver etc. in
the breast pocket may not drop on the machine when you have bent forward.
Caution (3) Many strong impact proof resins(polypropylene) are used for this machine. Since fastening the tapping
screws by the excessive torque may damage the female screws, be sure to apply the tool fastening
torque as specified. Do not fasten manually or never use the tool that cannot set the torque as
specified.
Torque set for the tool when fastening the screws
(1) Tapping screw flange PT 4x18 => 8-12 kgf-cm (0.6 - 0.9 ft-lbs)
Note that the following is excluded.
i) For the cord lamp of deck and switch box => 10-12 kgf-cm (0.7- 0.9 ft-lbs)
ii) For the plate of front/rear shafts => 12-16 kgf-cm (0.9-1.2 ft-lbs)
(2) Tapping screw flange PT 4x25 => 8-12 kgf-cm (0.6 -0.9 ft-lbs)
(3) Tapping screw flange PT 5 x25 => 18-22 kgf-cm (1.3-1.6 ft-lbs)
(For battery holder complete)
(4) Tapping screw flange PT 5X25 => 10-14 kgf-cm (0.7-1.0 ft-lbs)
(For control panel)
1.Disassembling of blade
To disassemble the motor assembly, remove the blade beforehand. See the instruction manuals for disassembling
methods.
2.How to remove the cowling
Remove the rear bag, and then loosen the
PT 4X25 Tapping screw flange PT4x25 tapping screw PT4x25(2 pieces) and
PT4x18(2 pieces) for mounting the curling
PT 4X18 Tapping screw flange PT4x18 to disconnect the curling.
3.Replacing of the battery
Loosen the +Hexagon bolt M5x12(2
pieces) to remove the lead wire from the
PT5X25 Tapping screw flange PT5x25
battery.
Temperature fuse complete Loosen the tapping screw flange
Lead wire PT5x25(2 pieces).
M5 Hexagon nut M5
Battery holder complete
PT5X25 Tapping screw flange PT5x25
+Hexagon bolt M5x12
Sponge sheet B Slide the battery holder complete until
the sponge sheet B touches with the
temperature fuse complete.
Slide away
Remove.
Slide the battery holder complete upward to take away it.
Remove the battery from deck and then replace it.
Be sure to place the temperature fuse complete between
batteries.
4.How to remove the motor assembly
Engage the box wrench 10 with both
hexagon lock nut M6-10 and hexagon
bolt M6x40, and then disassemble the
Hexagon lock nut M6-10(4 pieces) hexagon bolt M6x40 and the fix plate.
Motor assembly
Fasten the hexagon bolt M6x40 under
the tool setting torque of 40-60 kgf-
cm[2.9-4.3 ft-lbs] when assembling.
Fix plate(2 pieces)
Hexagon bolt M6x40(4 pieces)
5.Disassembling of motor assembly
Loosen the hexagon holed stop screw M8 x 8
(Adhesive attached) to remove the blade holder
Small protrusion from the armature.
End bell
Loosen the hexagon bolt M5x115(2 pieces) to
Ball bearing 6000LLB
disassemble the motor assembly.
Armature
Yolk unit
Flat washer 17
Ball bearing 6203LLB
Small dent portion Square
hole
Bearing box
Large dent portion
Hexagon bolt M5x115(2 pieces)
Large protrusion Blade holder(Dust cover mounted)
Plate Hexagon holed stop screw M8x8(adhesive adhered)
Protrusions at 4 corners
Fasten the hexagon bolt M5x115 under the tool setting torque of 20-30 kgf-cm[1.4-2.2 ft-lbs] when
assembling. Make fit of each dent and protruded portions on the end bell, yolk unit, plate and bearing box,
respectively.
6.How to remove the connecting rod, front shaft and rear shaft
Flat washer 4(one piece)
Tapping screw flange PT4x18(one piece)
Deck Boss
Remove the
tension spring 12. Circle clip(shaft)S-8
Rear shaft
8" wheel
Cap
Deck
Tension spring 12
Connecting rod
Circle clip(shaft)S-8 Bolt with step 3/8-16 UNC
Plate(4 pieces) 7" wheel
Front shaft
Tapping screw flange PT4x18(8 pieces) Cap
Bolt with step 3/8-16 UNC
Remove the wheel cap and then loosen the bolt with step 3/8-16 UNC to disconnect the 7" wheel and 8" wheel.
Loosen the tapping screw flange PT4x12(1 piece) to remove the flat washer 4. Remove the tension spring 12
from the boss on the deck. Remove the circle clip(shaft)S-8 from the front and rear shafts. Remove the
connecting rod.
Loosen the tapping screw flange PT4x18(8 pieces) on the back of the deck to remove the plates(4 pieces)
Remove the front shaft and rear shaft from the deck.
Assemble the shorter side of the Front shaft side
connecting rod on the front shaft.
For the tension spring 12, first assemble the connecting rod side Short
and then insert the hook at back side into the root of boss on the deck.
Boss
Insert into the root.
Boss
Connecting rod
7.Disassembling of the control panel
Control panel
Cap Claw(6 pieces)
Hexagon nut M12
Caulking(5 points)
Switch plate
O.C.R.
Inlet
Control panel holder
Tapping screw flange PT4x12(2 pieces)
Switch
Indicator
Loosen the tapping screw flange PT4x12(2 pieces) to remove the claws at 6 points, and then disassemble the
control panel and control panel holder.
To disassemble the inlet, cut off the lead wire.
Assemble the switch while the switch lever is being turned off.
Use care of directions for up/down when assembling the indicator.
Assemble the O.C.R. while the face with 5 caulking faced up.
How to assemble the inlet cover
Hole Set the torsion spring 4 on the inlet
Inlet cover
cover as shown on the figure and
then insert the longer arm of the
torsion spring 4 through the hole of
control panel.
Control panel(main side) Torsion spring 4
Insert the spring pin 3-28 in the direction
shown on the figure and then mount the inlet
cover.
Spring pin 3-28
8.Disassembling of the switch box
Switch lever
Switch lever arm
witch box
Switch box cover Remove
with bending.
Tapping screw flange PT4x18
Handle
Slightly bend the switch lever and then remove the switch lever from the handle.
Loosen the tapping screw flange PT4x18(4 pieces), and remove the switch box and switch box cover from the
handle.
Caution : Use care not to miss the compression spring 16 as it may potentially jump out.
Disconnect the E ring 12 to remove the
15, lever and switch
lever arm etc.
Sinwasher E ring 12 Lever
Set the torsion spring 20 on the lever as shown on the figure.
Torsion spring 20
Lever
Switch box Insert the U-shaped hook of the
Boss
tension spring 5 through the hole of
lever. Also set the circle-shaped hook
on the boss of the switch box.
Mount the lever on the switch lever
Tension spring 5 arm which has been pre-mounted on
the switch box.
Set the thin washer 15 and E ring
12 to fix.
Switch lever arm
Lever
Cross boss Compression spring 16 Handle
Lever
Switch button
Cover the switch
box cover.
Insert the boss through the hole on the handle.
Switch box cover Switch box
Insert the boss(2 pieces) of the switch box equipped with the lever and switch button through the hole on the
handle to assemble.
Set the compression spring 16 on the cross boss of the switch box cover, and then mount the switch box cover on
the switch box.
Circuit drawing
Switch
White Red Black
Current relay
Indicator Switch
Inlet
Red
Cord unit
Red
Relay
Temperature fuse complete
White Red
Red
Receptacle sleeve White
White
Red Black Red
Black
Red
Battery
Black Battery
Insulation cover
Black
Motor
Black
Connector at closed end