Makita EH561 User manual
MODEL EH561/EH760
SERVICE
MANUAL
1
.
SPECIFICATIONS
a
.
Designation
of
Parts
.....................................................
3
b
.
Specifications
...........................................................
4
2
.
PREPARATIONS
a
.
Disassembly
&
ReassemblyProcedure
......................................
5
b
.
Cautions
..............................................................
6
3
.
DISASSEMBLY
81
ASSEMBLY PROCEDURES
...............................
7
.
9
a
.
Removal
of
Engine and Machine Body
..................................
10
.
11
b
.
Disassembly
&
Assembly of Machine Body
..............................
12
.
13
c
.
Disassembly
&
Assembly
of
Engine
....................................
14
.
18
d
.
Disassembly
&
Assembly
of
Carburetor
.................................
19
.
24
4
.
CHECKUP AND ADJUSTMENT
a
.
Daily Checkupand Adjustment
............................................
25
b
.
Checkup and Adjustment for Every 30
-
50
Hours
.
(Every 10Days)
...............
26
c
.
Checkup and Adjustment for Every
100
-
200 Hours
.
(Monthly)
..................
26
5
.
STANDARD OF ADJUSTMENT
a
.
Tightening Torque of Components
.........................................
27
b
.
StandardAdjustment Table
...............................................
28
c
.
Lubrication Procedure
...................................................
28
d
.
Bladesharpening
.......................................................
28
e
.
BladeAdjustment
.......................................................
29
6
.
TROUBLESHOOTING
.................................................
30
-
31
2
1
SPECIFICATIONS
a. Designation
of
Parts
Fiirl
lank
rap
\
I
o
switrtl
(ON
orr)
b.
Specifications
Dimensions
(L
x
Wx
H)
Mass (with blade cover) kg
mm
I
Model
1,041
x
280
x
258 840
x
246
x
225
5.8 5.8
EH760
Volume (fueltank) cm3
Engine displacement cm3
Cutting length mm
Maximumengineperformance
kw
EH561
600
21.7
735
560
0.74
Clutchengagement speed l/min
Carburetor type type
3,600
WALBRO WYL
I
Maximumblade speed m/s
1
Ignition system type
Spark plug type
Electrodegap mm
I
1.88
Solid ignition system
NGK-BMR7A
0.6
-
0.7
1
Idlingspeed l/min
I
Mixture ratio (fuel: MAKITA 2-strokeoil)
Gear ratio
2,600
50:
1
14
:
58
1) The data takes equally into account idlingand racingspeed operating modes.
2.
PREPARATIONS
a. Disassembly and Reassembly Procedures
The disassembly and reassembly procedures mentioned below are given as a general rule. These
procedurescan be added
to
or omitted accordingto your operating conditions.
II.
PREPARATIONS Cleaning
Drainageof fuel
Disposition
of
tools
I
Ill.
DISASSEMBLY
1.
Machinebody
2
Engine
CHECKUP Cleaning of parts
Checking
of
parts
(Referto
IV.
CHECKUPAND ADJUSTMENT)
(Referto
V.
STANDARDOF ADJUSTMENT)
(Referto
X.
SETTING
OF
BRUSHBLADE)
1
IV.
REASSEMBLY
1.
Engine
2
Machinebody
(Referto
VIII.
TABLE
OF
TIGHTENINGTORQUE)
I
c
I.
STARTINGTEST
1.
Starting procedure
2
Checkupand adjustment of carburetor
Checkupand adjustment
(Referto
IX.
TROUBLESHOOTING)
NOTE: The numbers are the same as those inthis manual.
5
b.
Cautions
1)
Preparations
(1
)
Workbench
(2)
Disassemblyand reassembly kitsand gauges
(3)
Washing bowl
(4)
Rinseoil (lightoil, gasoline, etc.)
(5)
Oil (mobileoil), grease
(6)
Adhesive, sealant
(7)
File, sandpaper
(8)
Shopcloth
2)
Cautions in Disassembly
(1)
Use standardtoolscorrectly.
(2)
Handle disassembled parts with care and be sure to cleanthem.
Inparticular, remove dust or dirt adhering to the mountingsurfaces of packings.
Bearings inrod areeasy to separate.
If
there is no abnormality on rod, no specialmaintenance is
neededwithout removingcontaminated grease.
(3)
Keepdisassembled parts in order to avoid
loss
or error in reassembly.
(4)
If
it is hardto loosen bolts or screws, use an impact driver.
3)
Cautions in Reassembly
(1)
Pay attentionto the combination of parts (in particular, mountingdirection: front and rear, right and
(2)
Replace packings and gasketswith new ones.
(3)
Tighten boltsand screws twice ina diagonal manner.
(4)
Apply two-cycleengine oil (or Mobile oil) to rotary and slidingparts.
(5)
During reassembly,be carefulto keep parts free of dust and dirt.
(6)
For rotating parts, turn them by handto check for movementor noise.
(7)
After reassembly,turnthe rotating parts by hand and confirmthat there is noabnormality (loosen-
(8)
Neverfail to apply genuine grease into case.
left, upper and lower).
ing, etc.)
6
3.
DISASSEMBLY
&
ASSEMBLY PROCEDURES
-
-\
__
/
7
8
I
9
a. Removal'of Engineand Machine
Body
For
EH561
1.
StarVStop leadwire
Remove lead wire connecting rear-handle stop
switch with engine.
2.
Throttlewire
Remove cable holder fixed to rear handle by
loosening screw (M4x
10).
Removethrottlewire from throttle lever parts.
Cable
holder
3.
Engine
Removeengine by loosening
two
bolts (M6 x
15,
PW,
SW)
with fixing case and engine and one bolt (M6 x 40,
W,
SW)
with combine rear handlewith case and engine.
4. Rear handle
Loosen bolt (M6 x
50,
W,
SW)
on case side and
remove rear handle.
5.
Front handle
Loosen bolt (M6 x
35,
SW)
with fixing case and front handle and removefront handle.
10
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