Cobra Y145V Manuel utilisateur
CONTENT
CONTENT
1. INTRODUCTION...............................................................................................................1
1-1 Parts Description......................................................................................................... 1
1-2 Specifications.............................................................................................................. 2
1-3 Service Limit............................................................................................................... 2
2. DIMENSION AND TORQUE............................................................................................4
2-1 Dimension................................................................................................................... 4
2-2 The Position Of Installing Hole...................................................................................5
2-3 PTO Installing Drawing.............................................................................................. 5
2-4 Torque Value...............................................................................................................6
2-5 Standard Torque Value................................................................................................7
3. MAINTENANCE................................................................................................................8
3-1 Maintenance Schedule.................................................................................................8
3-2 Engine Oil................................................................................................................... 8
3-3 Air Cleaner................................................................................................................ 10
3-4 Wash The Strainer..................................................................................................... 11
3-5 Spark Plug................................................................................................................. 11
3-6 Valve Clearance Adjustment.....................................................................................12
3-7 Governor....................................................................................................................14
4. DISASSEMBLING AND SERVICING........................................................................... 15
4-1 Troubleshooting.........................................................................................................15
4-1-1 Starting Difficult............................................................................................ 15
4-1-2 Power Lack.................................................................................................... 17
4-1-3 Speed Unstable...............................................................................................18
4-1-4 Unable Igniting...............................................................................................18
4-1-5 Gasoline Engine Is Overheat..........................................................................19
4-1-6 Abnormal Sound............................................................................................ 19
4-2 Preparation Of Servicing........................................................................................... 20
4-2-1 Safety Precautions..........................................................................................20
CONTENT
4-2-2 Special Tools..................................................................................................21
4-3 Dismounting Chart.................................................................................................... 22
4-4 Gasoline Engine........................................................................................................ 23
4-4-1Recoil starter / fan cover................................................................................. 23
4-4-2 Muffler........................................................................................................... 26
4-4-3 Fuel Tank....................................................................................................... 27
4-4-4 Air Cleaner.....................................................................................................28
4-4-5 Governor........................................................................................................ 30
4-4-6 Carburetor...................................................................................................... 32
4-4-7 Flywheel.........................................................................................................37
4-4-8 Cylinder Head / Valve....................................................................................41
4-4-9 Crankshaft / Piston......................................................................................... 49
4-5 Electric Diagrams......................................................................................................58
TRANSFORMATION POINTS..............................................................................................59
1. INTRODUCTION
1
1.
INTRODUCTION
1-1 Parts Description
2
1. INTRODUCTION
1-2 Specifications
MODEL
ITEM
Y145V
L×W×H(not including crankshaft
output terminal)
415×345×280(mm)
Dry Weight
9.5Kg
Engine Type
Single Cylinder Horizontal,4-Stroke, OHV
Displacement
144.3cc
Bore × Stroke
65mm×43.5mm
Theoretical Maximum Power
2.6kW/3,600r/min
Recommended Using Power
2.0Kw /2800r/min
Maximum Torque
7N·m/2,800r/min
Fuel Consumption
410g/kW·h
Cooling System
Forced Air
Ignition System
Capacitance Discharge Type
PTO Shaft Rotation
Vertical Shaft Output
1-3 Service Limit
UNIT：mm
PARTS
ITEM
STANDARD
SERVICE
LIMIT
Engine
Maximum Speed (No Load)
--
Idle Speed
--
Cylinder Compression
2850±100rpm
2100±100rpm
55-65PSI/700rpm
--
Cylinder Head
Sleeve I.D
65.015-65.025 65.045
Cylinder Head
Warpage
--
0.10
Piston
Skirt O.D.
64.975-64.98564.945
Piston–to-Cylinder Clearance
0.10
Piston Pin Bore I.D.
0.030-0.050
12.004 12.004
Piston Pin O.D
12.012 12.040
Piston Pin-to-Piston Pin Bore Clearance
0.007-0.0200.05
Piston Rings
Ring Side Clearance：second
0.030-0.065
0.15
Ring Enc Gap: second
0.2-0.4
1.0
Ring Width：second
1.497-1.499
1.397
1. INTRODUCTION
3
Connecting Rod
Small End I.D
12.050
Big End I.D
Big End Clearance
22.060
0.20
Small End Clearance
12.007-12.022
22.020-22.033
0.14-0.16
0.01-0.03
0.08
Crankshaft
Crankshaft Pin O.D
22.17-22.18 22.10
Valve
Valve Clearance
IN
EX
Stem O.D
IN
EX
Guide I.D
IN/EX
Stem Clearance
IN
EX
Seat Width
Spring Free Length
0.10±0.02
0.15±0.02
5.465-5.480
5.465-5.480
5.500-5.512
0.020-0.044
0.050-0.077
2.8-3.0
64.0
--
--
5.315
5.315
5.562
0.10
0.12
3.2
63
Camshaft
Cam Height
IN
EX
Journal O.D
24.4
24.4
11.966-11.984
24.30
24.30
11.916
Crankcase Cover
Camshaft Bracket I.D
12.00-12.018 12.038
Carburetor
Main Jet
--
Float Height
#59(DL)or#60（HY）
13.7
--
Pilot Screw Opening
2-5/8turns
--
Spark Plug
Gap
0.7-0.8
--
Spark Plug Cap
Resistance
4.5-5.5kΩ
--
Ignition Coil
Resistance Primary coil
1.0-1.3Ω
--
Secondary coil
10.5-11kΩ
--
Air Gap （at flywheel）
0.30-0.40
--
2. DIMENSION AND TORQUE
4
2.
DIMENSION AND TORQUE
2-1 Dimension
2. DIMENSION AND TORQUE
5
2-2 The Position Of Installing Hole
2-3 PTO Installing Drawing
Q161 Shaft
2. DIMENSION AND TORQUE
6
2-4 Torque Value
ITEMS
FASTENERS
TORQUE VALUE (N·m)
Connection-Rod Bolt
M5×26 10±0.5
Governor Gear Bolt
M6×12
11±1
Crankcase Cover Bolt
M6×30 11±1
Spark Plug
M14-1.25
18±2
Cylinder Head Bolt
M8×45
26±2
Rotation Shaft Locked Nut
M6 × 0.5
11±1
Cylinder Head Cover Bolt
M5×12 7±1
Ventilation Chamber Cover Bolt
M4×10 3±0.5
Side Shield Bolt
M6×10
10±2
End Shield Bolt
M6×10
10±2
Brake Bolt
M5×12、M5×18 7±1
Flywheel Nut(Cast Iron)
M14×1.5
80±6
Ignition Wire Bolt
M6×25
11±1
Fuel Tank Support Bolt M6×30 11±1
Fuel Tank Bolt
M6×22
8±1
Recoil Starter Reel Nut
M6
11±1
Throttle Control Sub Assemble Bolt
M6×1211±1
Air Cleaner Nut
M6×1.0
11±1
Muffler Cover Bolt M6×30 11±1
Engine Cover Nut
ST4.2X15 1.5±0.2
For unspecified bolt, screw and nut, refer to the standard torque value.
2. DIMENSION AND TORQUE
7
2-5 Standard Torque Value
FASTENERS
SPECIFICATION
TORQUE VALUE(N·m)
Bolt, Nut
5mm Bolt, Nut
4.5-6
6mm Bolt, Nut
8-12
8mm Bolt, Nut
18-25
10mm Bolt, Nut
29-34
12mm Bolt, Nut
49-59
4mm Screw
1.5-2.6
5mm Screw
3.5-5
6mm Screw
7-11
5mm Flange Bolt
3.6-6.9
6mm Screw
7-11
5mm Flange Bolt
3.6-6.9
6mm Flange Bolt
10-14
8mm Flange Bolt
20-26
10mm Flange Bolt
35-45
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