Page 1
1
INTRODUCTION
We are constantly working on technical
improvement of our products. For this reason,
technical data, equipment and design are subject to
change without notice. All specifications,
illustrations and directions in this SERVICE DATA
are based on the latest products information
available at the time of publication.
For further information to service this model, please
refer to ECHO SERVICE MANUAL Ord. No. 402-
19.
HEDGE TRIMMER
HCR-1500
Reference No. 12-21A-00
ISSUED: 199807
SERVICE DATA
1
12-21A-00
CONTENTS
page
1 SERVICE INFORMATION ............................ 2
1-1 Specifications ............................................ 2
1-2 Technical data .......................................... 3
1-3 Torque limits ............................................... 4
1-4 Special repairing materials ....................... 4
1-5 Service limits ............................................. 5
1-6 Special tools ............................................. 6
2 SERVICE HINT ............................................. 7
2-1 Rotating rear handle construction ............. 7
2-2 Rotating rear handle function .................... 8
HCR-1500
INDEX
Page 2
1 SERVICE INFORMATION
1-1 Specifications
* See NOTE on page 4.
Dimensions Length mm(in) 1022 (40.2)
Width mm(in) 237 ( 9.3)
Height mm(in) 197 ( 7.8)
Dry weight kg(lb) 5.0 (11.0)
Engine Type KIORITZ, air-cooled, two-stroke, single cylinder
Rotation Counterclockwise as viewed from the output end
Displacement cm
3
(in3) 21.2 (1.294)
Bore mm(in) 32.2 (1.268)
Stroke mm(in) 26.0 (1.024)
Compression ratio 6.6
Carburetor Type Diaphragm, horizontal-draught, with primer (purge pump)
Model ZAMA C1U-K51
Ignition Type CDI (Capacitor discharge ignition) system
in a single integrated piece
Spark plug BPM7Y, RCJ-8Y
Starter Type Automatic rewind
Rope diameter x length mm(in) 3.0 x 890 (0.12 x 35.0)
Fuel Type Premixed two-stroke fuel (Refer to Operator's manual.)
Tank capacity cm
3
(U.S.fl.oz.) 300 (14.2)
Clutch Type Centrifugal, 2-shoe slide
Handle Type Front Rubber grip
Rear Rubber grip with throttle trigger
Gear case
Reduction ratio 5.88
Gear tooth Spiral bevel
Lubrication Lithium based grease
Cutter
Type Double reciprocating, double edge blade
Length mm(in) 550 (21.7)
Pitch mm(in) 35 ( 1.4)
Height mm(in) 21 ( 8.3)
Thickness mm(in) 2.5 (0.098)
Clearance* mm(in) 0.25 - 0.5 (0.01 - 0.02)
Lubrication Apply oil every 4 hours of use
2
SERVICE INFORMATION HCR-1500
Page 3
1-2 Technical data
Engine
Idling speed rpm 3000 - 3400
Maximum speed rpm 10000 - 10500
Clutch-in speed rpm 3500 - 4100
Compression pressure, standard kgf/cm
2
(psi) 8.5 (121)
Carburetor ZAMA C1U-K51
Type Diaphragm horizontal-draught
Venturi Size mm(in) 8.5 (0.335)
Throttle Bore mm(in) 12.7 (0.5)
Idle speed screw initial setting turn in 3 - 4
H needle initial setting turn back 1 3/4
L needle initial setting turn back 1 3/4
Test Pressure, minimum kgf/cm
2
(psi) 0.5 (7.0)
Metering lever height mm(in) 0.1 - 0.25 (0.004 - 0.010)
lower than diaphragm seat
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028)
Minimum
secondary voltage at 1000 rpm
kV 15
Secondary coil resistance kΩ 1.0 - 2.0
Pole shoe air gaps mm(in) 0.3 - 0.4 (0.012 - 0.016)
Ignition timing °BTDC 27
H needle: High speed needle.
L needle: Idle needle.
BTDC: Before top dead center.
3
HCR-1500
SERVICE INFORMATION
Page 4
4
SERVICE INFORMATION HCR-1500
1-3 Torque limits
* Apply thread locking sealant. (See below.)
† Tapping screw.
NOTE: Adjusting cutter clearance
Fasten all cutter bolts to this torque, then back 1/2 turns(180°) counterclockwise.
Material Location Remarks
Grease Gear case
Rewind spring Lithium based grease
Starter center post
Thread locking sealant Starter case
Carburetor insulators
Fuel tank Loctite #222, ThreeBond #1342, or equivalent
Gear case
Rear handle to handle fixture
1-4 Special repairing materials
Descriptions Size kgf•cm in•lbf
Starter Pawl carrier M 8 160 - 200 140 - 175
system Starter case M 4 * 14 - 28 12 - 24
Ignition Ignition coil
(CDI module)
M 4 35 - 50 30 - 45
system Spark plug M14 130 - 170 110 - 150
Fuel Carburetor insulator M 5 * 25 - 40 22 - 35
system Carburetor M 5 25 - 40 22 - 35
Throttle cable nut M 6 25 - 35 22 - 30
Fuel tank M 5 * 25 - 40 22 - 35
Clutch Clutch hub M 8 160 - 200 140 - 175
Engine Crankcase M 5 70 - 110 60 - 95
Cylinder M 5 70 - 110 60 - 95
Muffler M 5 60 - 100 52 - 85
Gear
Gear case
M 4 * 30 - 50 26 - 45
case
with cylinder cover
M 4 * 14 - 28 12 - 24
Bottom cover M 4 35 - 50 30 - 45
Cutter
Cutter bolts (See NOTE below)
M 6 10 - 15 9 - 13
Cutter nuts M 6 50 - 60 45 - 52
Handle Rear handle set M 5 † 10 - 20 9 - 18
Rear handle set to handle fixture M 5 * 25 - 40 22 - 35
Handle fixture to gear case M 5 25 - 30 22 - 26
Regular bolt, nut, and screw M 3 6 - 10 5 - 9
M 4 15 - 25 13 - 22
M 5 25 - 45 22 - 40
M 6 45 - 75 40 - 65
M 8 110 - 150 95 - 130
M10 210 - 300 180 - 270
Page 5
1-5 Service limits
Description mm (in)
A Cylinder bore When plating is worn and aluminum can be seen
B Piston outer diameter Min. 32.10 (1.264)
C Piston pin bore Max. 8.030 (0.3161)
D Piston ring groove Max. 1.6 (0.063)
E Piston ring side clearance Max. 0.1 (0.004)
F Piston pin outer diameter Min. 7.98 (0.3142)
G Piston ring width Min. 1.45 (0.057)
H Piston ring end gap Max. 0.5 (0.02)
K Crankshaft runout Max. 0.05 (0.002)
L Clutch drum bore Max. 51.0 (2.01)
5K193 5K228 5K229 5K230
5K231 5K016
5K042 5K194
0
1
2
3
4
5
6
7
8
9
1
0
1
1
1
2
0
5
1
0
5K171
ABCD
EFGH
KL
5
HCR-1500
SERVICE INFORMATION
Page 6
1-6 Special tools
a
1
6
10
14
2
7
11
15
3: a=4mm
4: a=3mm
8
12
5
9
13
Key Part Number Description Used for:
1 Tachometer Measuring engine speed
2 433019-12330 Flange nut Removing magneto rotor (flywheel)
3 895610-79920 L-hex wrench (4 mm) Removing and installing hex. socket bolts (M5)
4 895612-79920 L-hex wrench (3 mm) Removing and installing hex. socket bolts (M4)
5 897701-06030 Bearing wedge Removing ball bearings on crankshaft
6 897701-14732 Bearing tool Removing and installing crankcase ball bearings
7 897702-30131 Piston pin tool Removing and installing piston pin (Use 8 mm dia. adapter.)
8 897712-07930 2-pin wrench Removing and installing pawl carrier
9 897714-24330 Oil seal tool Installing crankcase oil seals
10 897718-02830 Bearing tool Installing clutch drum ball bearing in gear case
11 897731-04920 Clutch tool Removing and installing clutch assembly
12 897800-79931 Spark tester Checking ignition system
13 897803-30130 Pressure tester Checking carburetor and crankcase leakages
14 897835-16131 Pressure connector Checking crankcase and cylinder leakages
15 900100-08008 Bolt Removing magneto rotor (flywheel)
6
SERVICE INFORMATION HCR-1500
Page 7
2-2 Rotating rear handle function
7
HCR-1500
SERVICE HINT
2 SERVICE HINT
2-1 Rotating rear handle construction
Throttle trigger
Throttle trigger
Throttle lockout
Throttle spring
Stopper spring
Handle stopper
Handle stopperHandle fixture
Rear handle
Handle fixture
Knock button
Throttle cable
Latch
A
A
Cut view A
Rear handle
Latch
1. With the Throttle trigger (K) in idle position, the Latch (A) is
pushed, the head (B) of Latch comes off Throttle stopper (C).
Throttle stopper (C) is pushed to the neck (M) of Latch by Stopper
spring (D).
Then projection part (E) of Throttle stopper disengages from dent (F)
of Handle fixture.
In this state, the Rear handle can be rotated.
B
C
M
A
D
B
C
F
E
K
Page 8
HCR-1500
8
SERVICE HINT
2-2 Rotating rear handle function
A
M
L
D
L
C
F
G
H
K
N
C
E
B
D
L
C
K
C
E
2. When the Rear handle is rotated 45 or 90 degrees clockwise or
counterclockwise, the Knock button (G) engages with the dent (H)
of Rear handle and makes click noise.
Throttle trigger (K) is pulled in this position, Throttle stopper (C) is
pushed to the front by part (L) of Throttle trigger.
Then, The projection part (E) of Throttle stopper engages with dent
(F) of Handle fixture to stop rotating of Rear handle.
On the other hand, when the Throttle stopper (C) is pushed to the
front, the connection of the neck (M) of Latch comes off from Throttle
stopper (C).
Then the Latch (A) is pushed and moved toward outside by the
Spring (N).
And the head (B) of Latch prevents the Throttle stopper (C) from
moving backward.
3. When projection (E) of Throttle stopper (C) doesn't engage with
dent (F) of Handle fixture, Throttle stopper (C) doesn't move to the
front even if Throttle trigger (K) is pulled, and the movement of part
(L) of Throttle trigger is obstructed by Throttle stopper (C).
Therefore the Throttle trigger can't be pulled, and engine rotation
isn't raised.
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