
CLS-5000 CLS-501010-52B-00
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lNTRODUCTION
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.
CONTENTS
page
1 SERVICE INFORMATION .............................2
1-1 Specification...............................................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
Reference No. 10-52B-00
ISSUED: 200206
INDEX

CLS-5000
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1 SERVICE INFORMATION
1-1 Specifications
Model CLS-5000 CLS-5010 
Dimensions Length* mm(in) 1735 (68.3) 1875 (73.8)
Width mm(in)
Height mm(in) 475 (18.7) 535 (21.1) 
Dry weight* kg(lb) 9.8 (21.61) 10.3 (22.71) 
Engine Type
Rotation Counterclockwise as viewed from the output end
Displacement cm3(in3) 51.7 (3.155)
Bore mm(in) 44.0 (1.732)
Stroke mm(in) 34.0 (1.339)
Compression ratio 6.6 
Carburetor Type Diaphragm, horizontal-draught, with primer
Model Walbro
Venturi size-Throttle bore mm(in) 13.5 - 15.0 (0.531 - 0.591) 
Ignition Type
Spark plug  RCJ-6Y 
Starter Type Automatic rewind
Rope diameter x length mm(in) 3.8 x 1150 (0.15 x 45.3) 
Fuel Type Premixed two-stroke fuel (Refer to Operator’s manual.)
Tank capacity L (U.S.fl.oz.) 1.0 (33.8) 
Clutch Type Centrifugal, 2 - shoe pivot 
Handle Type Front U-shaped adjustable, with integrated control grip 
Drive shaft Type Solid
Diameter - Length mm(in) 10.0 - 1448 (0.39 - 57.0) 10.0 - 1578 (0.39 - 62.1)
Housing OD -ID mm(in) 35 - 31.8 (1.38 -1.25) 35 - 31.8 (1.38 -1.25)
(Main pipe) Length mm(in) 1400 (55.1) 1530 (60.2) 
Gear case Reduction ratio 1.4
Gear tooth Spiral bevel gear
Lubrication Lithium based grease 
Cutter Type Nylon line cutter, chipper saw
Pilot diameter mm(in) 20.0 (0.79)
Fastener type, size mm Left-hand thread nut, M12 x 1.75 pitch
Cutting rotation Counterclockwise as viewed from top
SERVICE INFORMATION
700 (25.6) (other than Canada) 
630 (24.8) (Canada)
KIORITZ, air-cooled, two-stroke, single cylinder
Semi-automatic decompression
WYK-172 (other than Canada) Walbro WYK-172 
WYK-173 (Canada)
CDI (Capacitor discharge ignition) system
in a single integrated piece, with electronic timing advancer
CLS-5010
650 (25.6)
OD: Outer diameter. 
ID: Inner diameter. 
* Without shoulder harness and cutter head.

CLS-5000 
CLS-5010
1-2 Technical data
Engine
Idling speed r/min 2400 - 2600 
Operating speed r/min 9500 - 11500 
Clutch - in speed r/min 3400 - 3900 
Compression pressure MPa (kgf/cm2) (psi) 1.0 (10.0) (140)
Ignition system
Spark plug gap mm(in) 0.6 - 0.7 (0.024 - 0.028) 
Minimum secondary voltage at 1000 r/min kV 14.0 
Secondary coil resistance k1 2.0 - 2.8 
Pole shoe air gaps mm(in) 0.30 - 0.40 (0.012 - 0.016) 
Ignition timing at 1000 r/min °BTDC 17.5
at 7000 r/min °BTDC 30 
at 11000 r/min °BTDC 11.5
Carburetor
Main jet #57 
Idle speed screw initial setting turns in* 4 
Idle needle initial setting turn back 1 
Test Pressure, minimum MPa (kgf/cm2) (psi) 0.05 (0.5) (7.0) 
Metering lever height mm(in) 1.5 (0.06) lower than diaphragm seat
SERVICE INFORMATION
3
BTDC: Before top dead center. 
* Set idle speed screw to contact throttle plate before initial setting.

CLS-5000
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1-3 Torque limits
Descriptions Size kgf•cm N•m in•lbf 
Starter Pawl carrier M 8 80 - 100 8 - 10 70 - 90
system
Ignition Magneto rotor (Flywheel) M 10 200 - 240 20 - 24 175 - 210 
system
Fuel Carburetor insulator M 5 40 - 55 4.0 - 5.5 35 - 50 
system
Clutch Clutch shoe M 8 160 - 200 16 - 20 140 - 175 
Engine Crankcase M 5 70 - 110 7 - 11 60 - 95
Others Blade fastening nut LM 10 280 - 320 28 - 32 245 - 280 
Regular bolt, nut, M 3  6 - 10 0.6 - 1.0 5 - 9 
and screw M 4 15 - 25 1.5 - 2.5 13 - 22
LM: Left hand thread. 
* Apply thread locking sealant. (See below)
Pawl carrier nut M 8 200 - 240 20 - 24 175 - 210 
Starter case M 5* 35 - 50 3.5 - 5.0 30 - 45
Ignition coil M 5 60 - 100 6 - 10 50 - 90 
Spark plug M 14 150 - 170 15 - 17 130 - 150 
Fan cover M 5 70 - 110 7 - 11 60 - 95
Carburetor M 5 30 - 45 3.0 - 4.5 26 - 40 
Fuel tank bracket M 5* 50 - 90 5.0 - 9.0 45 - 80
Cylinder M 5 70 - 110 7 - 11 60 - 95 
Decompression valve M 8 80 - 100 8 - 10 70 - 90 
Top guard M 5*  30 - 45 3.0 - 4.5 26 - 40 
Muffler M 6 110 - 150 11 - 15 95 - 130 
Muffler cover M 5 30 - 45 3.0 - 4.5 26 - 40 
Muffler stay M 5 70 - 110 7 - 11 60 - 95
SERVICE INFORMATION
M 5 25 - 45 2.5 - 4.5 22 - 40 
M 6 45 - 75 4.5 - 7.5 40 - 65 
M 8 110 - 150 11 - 15 95 - 130 
M 10 210 - 300 21 - 30 180 - 260
CLS-5010
1-4 Special repairing materials
Material Location Remarks
Grease Gear case
Rewind spring Lithium based grease or ECHO LUBE 
Starter center post
Oil Oil seal inner lips
Drive shaft
Thread locking sealant Starter case
Fuel tank bracket Loctite #222, ThreeBond #1344N or equivalent 
Top guard
Two-stroke engine oil or engine oil (SAE#30)
TM

CLS-5000
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10
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CLS-5010
1-5 Service limits
ABCD
SERVICE INFORMATION
5
5K245
5K222
5K223 5K224
EFGH
5K225 5K016 5K042
5K246
KLM
5K1895K219 5K220
Description mm (in) 
A Cylinder bore When plating is worn and aluminum can be seen 
B Piston outer diameter Min. 43.88 (1.728) 
C Piston pin bore Max. 10.04 (0.395) 
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. 9.98 (0.393) 
G Piston ring width Min. 1.45 (0.057) 
H Piston ring end gap Max. 0.5 (0.02) 
K Con-rod small end bore Max. 14.03 (0.552) 
L Crankshaft runout Max. 0.05 (0.002)
M Clutch drum bore Max. 79.5 (3.13)

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1-6 Special tools
1
2: a = 4 mm 
3: a = 5 mm
SERVICE INFORMATION
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a
CLS-5000 
CLS-5010
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6
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5
.3
.6
1
.4
0
1
.5
7
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13: b = 12 mm
c = 32 mm
b
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15
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14:b = 15 mm
c = 24.5mm
c
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20 22
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Key Part Number Description Used for:
1 Tachometer Measuring engine speed to adjust carburetor 
2 895610-79920 L-hex wrench (4 mm) Removing and installing hex. socket bolt (M5) 
3 895611-79920 L-hex wrench (5 mm) Removing and installing hex. socket bolt (M6) 
4 897501-03938 Puller Removing flywheel 
5 897537-30130 Piston stopper Locking crankshaft rotation 
6 897563-19830 Metering lever gauge Measuring metering lever height on carburetor 
7 897603-47530 PTO shaft puller Removing PTO shaft 
8 897701-02830 Bearing wedge Removing ball bearing remaining on crankshaft
9 897701-14732 Bearing tool Removing and installing ball bearings on crankcase / clutch drum 
10 897702-30131 Piston pin tool Removing and installing piston pin (Use 10mm dia. adapter) 
11 897712-04630 2-pin wrench Removing and installing pawl carrier 
12 897714-12330 Oil seal tool Installing crankcase oil seal (clutch side) 
13 897714-24330 Oil seal tool Installing crankcase oil seal (starter side) / PTO shaft bearings 
14 897726-21430 Oil seal tool Installing crankcase oil seal (clutch side) 
15 897718-03930 Bearing tool Installing crankcase oil seal (starter side) 
16 897719-02830 Piston holder Making piston steady to remove and install piston / ring 
17 363018-00310 Washer Installing crankcase oil seal (starter side) 
18 897800-79931 Spark tester Checking ignition system 
19 897803-30130 Pressure tester Testing fuel pipes/tank and crankcase leakages 
20 897826-16131 Pressure plug Plugging intake port to test crankcase / cylinder sealing 
21 897827-16131 Pressure plate Plugging intake port to test crankcase / cylinder sealing 
22 897831-16131 Pressure plug Plugging exhaust port to test crankcase / cylinder sealing 
23 897835-16131 Pressure connector Testing crankcase and cylinder leakages