Makita EH5000W Manual

Model No.
Description
PRODUCT
CONCEPT AND MAIN APPLICATIONS
P 1/ 2
Specification
Standard equipment
Note: The standard equipment for the tool
shown above may vary by country.
EH5000W, EH6000W, EH7500W
Petrol Hedge Trimmers
262 (10-3/8)
Dimensions: mm (")
Width (W)
Height (H)
Length (L) 1,014
(40)
1,119
(44)
216 (8-1/2)
EH5000W EH6000W
1,259
(49-1/2)
EH7500WModel No.
35 (1-3/8)
4,390
22.2 (1.4)
Stroke rate at No load: min.-1 = spm*1
400 (13.5)Fuel tank capacity: mL (oz)
Engine Displacement: mL (cu.in.)
Fuel
2-stroke
Mixed gasoline
(Mixture ratio of 50:1 [Makita 2-stroke engine oil] )
Specifications Model
Type
No load
at max. output power
Blade
Net weight *3: kg (lbs)
Speed : min.-1 = rpm
Carburetor
7,500
EH5000W
4.8 (10.5)
2.0 (1/16) 2.3 (3/32)
Yes
Diaphragm
Max. cutting capacity: mm (")
Rotation limiter Yes
Clutch Yes
Primer pump Yes
Starting system Recoil starter
10,500
Max. output power: kW (PS) 0.68 (1.0)
Thickness: mm (")
Blade drive mechanism
Type
Tooth spacing: mm (")
Max. branch diameter*2: mm (")
Double-sided
ø21.5 (7/8)
EH6000W
5.0 (11.0)
500 (19-3/4)Length: mm (") 600 (23-5/8)
2.3 (3/32)
EH7500W
5.2 (11.4)
750 (29-1/2)
483 (19) 588 (23-1/8) 728 (25-5/8)
In compliance with main exhaust emission
regulations; CARB Tier 3, EPA Phase 2, EU Stage 2
Connecting rod drive
Blade cover ................................... 1
Socket wrench ............................... 1
Hex wrench (for M5) .................... 1
Models EH5000W, EH6000W and EH7500W are Double-sided blade
Petrol hedge trimmers equipped with the 22.2mL 2-stroke engine that
is in compliance with all known exhaust emission regulations, the same
one as used for EH7500S.
The main feature of these models is extra light design with further
improvements in noise, vibration and handling for environment and
human friendliness. Especially, the anti-vibration system is unique
and effective. These models are quipped with floating structure of
engine section and handle section; four damper springs absorb
vibration from engine to integrated front and rear handles.
Other benefits are:
Longer lubrication cycle obtained by circulating grease
in gear housing
Shear blade with 3 sharpened edges and stain-free blade surface
of glittering silver provide long lasting, smooth cutting.
*1: stroke per minute
*2: Indicates maximum diameter of the branch that can be received
between adjacent two blade teeth. (See the figure on right.)
*3: Dry weight
with 3 sharpened edgesCutting teeth
Optional accessories
Shear blade assemblies
H
L
W
[EH5000W]
TECHNICAL INFORMATION

Repair
Apply Makita Grease N. No.2 to Spiral spring for recoil starter (approx. 2g) and Gear room (approx. 40g).
[1] NECESSARY REPAIRING TOOLS
< Note in repair>
* Repair the tool always with gloved hand
* Blades must be covered by Blade cover
* Cool down the engin first before repairing to avoid a skin burn.
* Remove all fuels from fuel tank and carburetor. Avoid any fire from the work shop.
* Repair the tool on the stable work table and keep dust out.
* Record where and how the parts were assembled to avoid mis-assembling.
Assort and reserve the dismantled parts in the box by section.
* The dismantled parts must be treated carefully and washed clean before reassembling.
* Use Impact driver in case bolts or screws can not be loosen by hand.
* The bolts or screws must be tightened to the designated fastening torque.
* Check the movement, sound and alignment of the main parts just after assembled.
* Replace the removed gasket with the new one.
Code No. Description Used for
1R024 Press tool removing Spur gear 9
1R127 Air density tester checking air leakage in Carburetor
1R170 T type hex wrench 3-127 removing / tightening M4 Hex socket head bolt
1R171 T type hex wrench 4-130 removing / tightening M5 Hex socket head bolt
1R229 1/4” hex shank bit removing / tightening Engine section
1R364 Fly wheel puller removing Fly wheel
1R366 Feeler gauge set adjusting a proper gap of ignition coil, Spark plug, Shear blade assembly
1R371 Clutch removing tool removing Clutch
1R373 Clutch drum removing tool removing Clutch drum
1R374 Pinion gear holding Jig fixing Spur gear 9
Hex socket bit 10 removing Fly wheel
Wire brush cleaning Spark plug
[2] LUBRICATION
CAUTION: Repair the machine in accordance with “Instruction manual” or “Safety instructions”.
P 2/ 26

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -1. Engine section
Fig. 3
(1) Disconnect Bullet terminal from the Lead wire of Ignition coil (Fig. 1).
(2) Remove Air cleaner cover and disconnect control cable from the swivel of carburetor.
Remove Control cable from cable bracket (Fig. 2).
(3) Remove three bolts to separate engine section. Grounding lead wire is fastened with one of the three bolts (Fig. 3).
(1) Assemble engine section to the Gear housing.
Note 1; Do not to pinch the Lead wires between Engine section and Gear housing.
Note 2; Make sure to fasten the terminal of Grounding lead wire with one of three Hex socket head bolts.
(2) Fix Control cable along with Adjust screw in the Cable bracket by clamping it with a Nut.
Hook the Control cable end on the Swivel of Carburetor.
Note; Adjust the Cable tension with a 1 - 2 mm play.
(3) Connect Bullet terminals (Fig. 1).
Fig. 1 Fig. 2
Bullet terminal Control cable
Grounding lead wire
DISASSEMBLING
ASSEMBLING
P 3/ 26

P 4/26
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -2. Clutch Section
Fig. 5
By using impact driver, Clutch can be loosened without holding Piston by utilizing air pressure in the cylinder.
In order to utilize this air pressure resistant, do not remove Spark plug in this step.
(1) Separate Engine section from Gear housing (Fig. 1, 2, 3).
(2) Remove Clutch (Fig. 4).
(1) Drive the Clutch to Crankshaft counterclockwise by hand so that the “ OFF” mark
can face the upper position (Fig. 5).
(2) Set 1R371 and fasten it counterclockwise by Impact driver
with 19mm Hex socket bit for approx. 2 seconds (Fig. 4).
DISASSEMBLING
ASSEMBLING
Fig. 4
1. Fit 1R371 to Clutch.
2. Fix 19mm Hex socket bit to
Impact driver.
3. Turn the Clutch clockwise
with Impact driver.
4. Now, the Clutch is removed
from Crankshaft.
1R371
Caution;
Remove Plug cap to avoid
an accidental start of engine.
Clutch
19 mm Hex
socket bit

P 5/26
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Clutch Drum
(1) Separate Gear case from Engine section (Fig. 1, 2, 3).
(2) Remove Gear case cover from Gear case.
(3) Disassemble Clutch drum (Fig. 6, Fig. 7).
DISASSEMBLING
Fig. 6
Fig. 7
Hex socket head bolts for fastening
Gear case cover to Gear case
Spur gear 9
Lock Spur gear 9 with 1R374 for disassembling
Clutch drum located on the reverse side of Spur gear 9.
Note;
Hex socket head bolts removed from
Gear case cover can be used for
fixing1R374.
Gear case
13 mm Hex
socket bit
1R373
Clutch drum
Fix the 1R373 to these holes and
remove Clutch drum by turning
1R373 clockwise.
Gear case
(reverse side view)
1R374

P 6/26
Repair
Fig. 8
Fig. 9
Remove Spur gear 9 (Fig. 8).
DISASSEMBLING
ASSEMBLING
Put Gear housing on the turn base of Arbor press horizontally.
Insert Spur gear 9 into Ball bearing in Gear case and press it with Arbor press.
ASSEMBLING
1R024
Apply 1R024 to Shaft
of Spur gear 9 and
press it with Arbor press.
Now, Spur gear 9 is disassembled.
Shaft of
Spur gear 9
Spur gear 9
Gear case
Assemble Spur gear 9 (Fig. 9).
[3] -4. Spur Gear 9
[3] DISASSEMBLY/ASSEMBLY
[3] -3. Clutch Drum
(1) Lock Spur gear 9 with 1R374 (Fig. 6).
(2) Drive Clutch drum to the shaft of Spur gear 9 counterclockwise by hand.
(3) Mount 1R373 to Clutch drum and fasten it counterclockwise with impact driver and 13 mm Hex socket bit (Fig. 7).
Note: 1. Do not lose Friction plate next to Rod when mounting Clutch drum.
2. Replace Gear case gasket to the new one.
Gear case complete

P 7/ 26
Repair
(1) Align the Shear blade (upper) with the lower one (Fig. 11).
(2) Set 2 pcs. of Sleeve 5 under Plate of Shear blade assembly (Fig. 12).
(3) Set the position of Spur gear 43 as described in Fig. 13.
DISASSEMBLING
ASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Shear Blade
Remove Holder and Shear blade assembly by unscrewing two Hex socket head bolts (Fig. 10).
Note: 2 pcs. of Sleeve 5 are mounted under Plate. Do not lose them (Fig. 12)
Gear case
Holder
Spur gear 43
Washer
Hex socket head bolt
Note:
Holder and Washer are fastened with Hex socket
head bolts. Do not lose them when removing
Shear blade assembly.
Fig. 10
Fig. 11
Plate
Shear blades
Sleeve 5
Fig. 12
Fig. 13
Shear blades
Seal

P 8/ 26
Repair
(4) Mount Shear blade assembly in the Gear case while fitting Shear blade’ boss into the hole of Connecting rod.
Fix the Shear blade assembly to Gear case by driving Hex socket head bolt through the Holder and
each Sleeve 5.
Note: *Do not forget to mount Seal (Fig. 14).
*Apply Makita grease N. No.2 to the portion designated with black triangle (Fig. 15).
(1) Loosen Hex lock nut.
(2) After tightening Hex socket button head bolt, turn it back by 1/4 to 3/8 counterclockwise.
(3) Tighten Hex lock nut fully while locking Hex socket button head bolt with Hex wrench (Fig. 16).
(4) Check the clearance by inserting 1R366 into the gaps of all Hex socket button head bolts (Fig. 17).
ASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -5. Shear Blade (cont.)
Fig. 15
Apply the both of Cam portions
which accept Connecting rods.
Cam portion
Connecting rod
Connecting rod
ADJUSTMENT
Fig. 16
Tighten Hex lock nut
Lock Hex socket button
head bolt.
Fig. 17
* If 0.4 gauge can be inserted, the clearance is too big.
It causes poor cutting performance
* If 0.2 gauge can not be inserted, the clearance is too tight.
It causes over consumption of fuel due to high friction load
and heavy load on gears.
Gear case
Spur gear 43
SealHolder
Fig. 14
Boss

P 9/ 26
Repair
(1) Remove Plug cap from Spark plug and check the resistance between Plug cap spring and Ignition coil with circuit
tester (Fig. 18).
MAINTENANCE
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Ignition
Plug Cap
(2) Check the connection of Plug cap spring with Ignition cable if Pointer of Circuit tester does not move or
does not steadily indicate 2.0 +- 0.5 kΩ.
Spray lubricant into the Plug cap and pull out Plug cap spring together with Ignition cable (Fig. 19).
Plug cap
Spark plug
Circuit tester
Grounding terminal
of Ignition coil
If the Circuit tester shows 2.0+- 0.5 kΩ,
the connection is in order.
Fig. 18
Fig. 19
Ignition
cable
Plug cap spring
Plug cap
(3) Check Plug cap if there is any crack, damage or disconnection. Re-fix them or replace the damaged one
with the new one if there is any disorder.
(4) Stick a Plug cap spring end into the center of Ignition cable and put them back into Plug cap while holding
Plug cap spring with pliers.
(5) Incomplete connection of Plug cap spring with Ignition cable causes the feeble sparking or no sparking from
Spark plug. Check the connection by taking the same procedure of (1) to (4).

P 10/ 26
Repair
(1) Remove Plug cap with Socket wrench 10-16. Clean the spark terminals of the removed Plug (Fig. 20).
And adjust the gap of Spark terminals to 0.6 - 0.7 mm.
DISASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Ignition
Spark Plug
Ignition Coil
(2) Mount Plug cap on the Plug and contact the Plug’s thread portion to the metal portion of engine, and then,
pull Starter rope gently. The plug is in order if its terminals have sparking constantly.
In case of no sparking at the terminals, return to “MAINTENANCE in [3]-6. Ignition” and replace the Plug with
the new one if the plug is out of order.
(1) Remove Blower housing, Cylinder cover, Muffler cover and Ignition coil.
Note; Do not lose Spacer for insulating Cylinder’s heat when removing Cylinder cover.
(2) Remove Rubber from Insulator (Fig. 21).
Fig. 20
Remove the remaining Fuel and
Carbon deposits stuck in the gap
with wire brush and air duster.
0.6 - 0.7 mm
Adjust the gap between
Spark terminals to 0.7 mm
by inserting 0.7 mm
Thickness gauge of 1R366.
0.7 mm Thickness
gauge of 1R366
Fig. 21
Rubber
MAINTENANCE

P 11/ 26
Repair
ASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Ignition
Ignition Coil
(1) Set Spacer on Cylinder and assemble Ignition coil on Spacer while inserting 0.3 mm thickness gauge of
1R366 between Fly wheel’s magnetized portion and Ignition coil (Fig. 22).
Keep the inserted thickness gauge in this step till the Ignition coil is fully tightened
in order to fix the 0.3 mm gap precisely.
(2) Remove the thickness gauge after Ignition coil is fixed. Make sure that Fly wheel can be turned smoothly by hand
without interference by Ignition coil.
Note: Make sure to fix Ignition coil through the Spacer. High voltage cable and Lead wire must be fixed
into Rubber. Locate high voltage cable to Cylinder side.
(3) Fix Rubber to Insulator.
Note: Make sure that the assembled High voltage cable does not interfere with throttle in action.
(4) Assemble Cylinder cover.
Note: Tighten Cylinder cover together with Spacer to Cylinder.
Thread locker must be applied to the thread of Hex socket head bolt which tightens that parts.
Apply “ ThreeBond 1342” or “Loctite 242” as a thread locker.
(5) Assemble Muffler cover.
Note: Apply ThreeBond 1342 or Loctite 242 as a thread locker.
Fig. 22
0.3 mm
Magnetized
portion of
Flywheel
Ignition coil

P 12/ 26
Repair
DISASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Ignition
Fly Wheel
Note: Plug cap has to be removed in order to avoid accidental start of engine.
Do not remove Plug when the nut for tightening Fly wheel is loosened to utilize air resistant in Cylinder.
(1) Attach 10 mm Hex socket bit to Impact driver. Turn M6 Hex nut counterclockwise with a Impact driver
(Clutch is removed by turning clockwise) (Fig. 23).
(2) Set 1R364 to Fly wheel to Fly wheel with two M6 bolts. Tighten Both of two M6 bolts to the same depth.
Fig. 23
Fly wheel
Hex Nut
Piston
Clutch
Clutch is removed by
turning clockwise.
Clutch side
Turn Hex nut counterclockwise.
So the Hex nut can be removed.
Fig. 24
1R364
M6 Bolt

P 13/ 26
Repair
DISASSEMBLING
ASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -6. Ignition
Fly Wheel
(1) Remove oil completely from Crankshaft.
(2) Align Woodruff key on Crank shaft to the key groove of Fly wheel and mount Fly wheel to Crankshaft.
(3) Turn M6 Hex nut to Crankshaft clockwise by hand and tighten it with Impact driver with 10 mm Socket bit
clockwise for 2 second.
(1) Remove Recoil starter assembly from Blower housing.
Note: Record the position and the pulling direction of Starter knob before disassembling (Fig. 26).
Fig. 25
Remove Oil completely
from Crankshaft.
Woodruff Key
Align this Key to the groove in the Fly wheel.
[3] -7. Recoil Starter
Fig. 26
Starter knob
Pulling direction
Blade sideLever case side
Recoil starter assembly

P 14/ 26
Repair
Fig. 27
DISASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -7. Recoil Starter (cont.)
(2) Disassemble Recoil starter (Fig. 27).
Reel Reel
Notch Notch
Rope
(1) Pull out Rope by the length of one or two times
turn of the Reel and hold the Reel.
(2) Release Starter knob while holding the Reel with
your finger and pull the slack Rope inside.
Hook the Rope in the notch and turn the Reel
counterclockwise while braking the Reel and
holding the Rope. Turn Reel until
Spiral spring recoil force is gone.
Rope
Starter knob
Starter
case
(3) Remove Set screw, Cam and Torsion spring. (6) Remove Reel from Starter case.
Note; Do not let Spiral spring leap out
in this step.
Set screw
Cam
Reel Torsion spring
Reel Spiral spring

ASSEMBLING
[3] DISASSEMBLY/ASSEMBLY
[3] -7. Recoil Starter
Assemble the Recoil starter (Fig. 28, 29).
Fig. 28
(1) Set the outer end of Spiral spring here firstly and wind it
clockwise till it is completely installed in the Starter case.
Note: Apply Makita grease N. No.2 a little on
the Spiral spring (Red grease was applied
to it at ex-factory condition).
(3) Pass the new Starter rope through Starter case
and tie the both Rope ends in Starter knob and Reel.
And wind the Rope around Reel two or three times.
Spiral spring
Notch
Reel
(6) Pull the slack rope in the Starter case
and hook it in the notch of Reel.
(4) Fit the projection of Reel to the hook of Spiral spring
while turning Reel clockwise.
Note: Precisely fit the projection of Reel to
the Spiral spring’s hook by repeating the step (4).
Starter case
Starter case
Reel
Starter knob
Protrusion
of Reel
Mounted Reel
Torsion spring
Hook of Spiral spring
Cam
Set screw
Rope
(5) Fix Torsion spring and Cam
on the Reel with Set screw.
P 15/ 26
Repair
Fig. 29
(7) Hold the rope near by the notch and turn it
with the Reel clockwise to let Spiral spring
have recoil force for driving Reel.
RopeReel
(8) Remove the rope from the notch and release your finger from Reel.
The Reel turns counterclockwise. Repeat the actions of (6), (7), (8),
until the Rope is wound by the Reel completely.
Notch
Reel
Rope

P 16/ 26
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -8. Carburetor
Fig. 30 Fig. 31
(1) Remove Air cleaner cover (Fig. 30).
(2) Remove Elements; Sponge and Felt (Fig. 31).
Air cleaner
cover
Hex socket
head bolt
Element
(Felt made)
Element
(Sponge made)
Fig. 33
Throttle valve
assembly
Pan head screw (small) Pan head screw (4pcs.)
Carburetor
body assembly
Gasket
Pump diaphragm
Pump body assembly
Metaling
diaphragm
Gasket
Diaphragm
cover
Inlet
screen
Fig. 32
DISASSEMBLING, CLEANING
(5) Remove Diaphragm cover, Metaling diaphragm, Gasket set by unscrewing four Pan head screws (Fig. 33).
Note; Carefully separate Gasket from Metaling diaphragm in case they stick each other as they are fragile.
(6) Replace Metaling diaphragm to the new one if it has any curing, deformation or breakage.
(3) Remove two Hex socket head bolts fixing Air cleaner plate and Carburetor assembly (Fig. 32).
Note; Take off the Hex socket head bolts completely from the machine,
otherwise, it’s impossible to disassemble Carburetor.
(4) Remove two tubes and disassemble Carburetor assembly (Fig. 32).
Hex socket
head bolt
Air cleaner plate Carburetor
assembly
Black
Tube
Clear Tube

P 17/ 26
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -8. Carburetor (cont.)
(7) Check Inlet needle in the Pump body assembly if its tip is intact. Replace Controller set including Inlet needle
to the new set if Inlet needle tip is damaged. It can be removed by unscrewing M3x4 Set screw.
Check if there is any foreign material stuck on Fuel inlet before fixing Inlet needle (Fig. 33, 34, 35).
(9) Fully loosen idling screw, then, remove Pan head screws (small) for fixing Throttle valve assembly
to Carburetor body.
(10) Spray carburetor cleaner on the Inlet screen, all fuel inlets, outlets and internal routes. And then, wash them
with gasoline (Fig. 35).
(11) Make sure that Compression spring fits to the protrusion of Control lever when assembled. (Fig. 36R).
Countersunk
head screw Inlet needle
Inlet needle
in normal condition
Control lever
Note;
The above parts are not supplied individually.
In case of replacement of any of the above parts,
it has to be replaced as a Pump body assembly.
Compression spring
Pin
Component Parts of Controller set
Fig. 34 Fig. 35
worn out
Carbureted air leaks out
if Inlet needle is worn out.
Carbureted air leaks out
if foreign material sticks
at inlet hole.
Compression spring
fits to Protrusion
of Control lever.
Protrusion of
Control lever
Control lever
Inlet needle
Wrong Assembling
of Compression spring
Metaling diaphragm
Compression spring
Fig. 36F
Fig. 36R
DISASSEMBLING, CLEANING
NOK
NOK
NOK
NOK

P 18/ 26
Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -8. Carburetor
Take the reverse step of Disassembling, Cleaning.
See Fig. 37.
(1) Connect two Tubes to Carburetor (Fig. 38).
ASSEMBLING
AIR-TIGHT TEST
Fig. 37
Nipple for
fuel intake
1R127
1. Connect 1R127 to Carburetor
2. Push up the air pressure until the
pressure gauge indicates 0.05 Mpa.
3. The Carburetor is in order
if the air pressure of 0.05 Mpa
can be kept for 10 seconds.
Carburetor
ASSEMBLING CARBURETOR TO ENGINE
Fig. 38
Nipple for
fuel intake
Black Tube
Clear Tube
Push

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -8. Carburetor (cont.)
(2) Fasten the following parts with two Hex socket head bolts (Fig. 39).
* Plate
* Air cleaner plate
* Gasket
* Cable bracket
* Gasket
* Carburetor assembly
* Carburetor gasket
Fig. 39
(3) Assemble Elements (Fig. 40).
ASSEMBLING CARBURETOR TO ENGINE
Air cleaner plate
Hex socket head bolt
Gasket
Carburetor gasket
Carburetor
assembly
Cable
bracket
Gasket
Air cleaner plate
2. Fit the tab of Air cleaner plate with the
square hole of Air cleaner cover and
fasten Air cleaner cover with a screw.
Air cleaner cover
Plate
Assemble plate to Air
cleaner plate, facing its
triangle side to Starter
case side.
Make sure that Gaskets
are mounted to the both
side of Cable bracket.
Starter case
Assemble Carburetor gasket,
facing its cut portion to
Loop handle side.
1. First, assemble Felt element,
and then, Sponge element.
Fig. 40
Tab of Air
cleaner plate
Square hole
for tab
Element
(felt)
Element
(sponge)
P 19/ 26

Repair
[3] DISASSEMBLY/ASSEMBLY
[3] -9. Stop Switch
(1) Connect Circuit tester for checking Stop switch (Fig. 41).
Fig. 41
MAINTENANCE
Bullet terminal
Connecting terminal
Stop switch is in order if it works
as followings:
* Circuit tester shows no connectivity
when Engine ON
* Circuit tester shows a connectivity
when Engine OFF
P 20/ 26