Sign In
Upload
Manuals
Brands
Yanmar Manuals
Engine
6BY2
Yanmar 6BY2 Manuals
Manuals and User Guides for Yanmar 6BY2. We have
2
Yanmar 6BY2 manuals available for free PDF download: Service Manual, Operation Manuals
Yanmar 6BY2 Service Manual (248 pages)
MARINE ENGINES
Brand:
Yanmar
| Category:
Engine
| Size: 57.44 MB
Table of Contents
Table of Contents
3
Safety
13
Safety Precautions
14
General Service Information
19
Safety Precautions
21
Engine Outline Drawings
22
4BY2 (Inboard)
22
4BY2 (Stern Drive)
23
6BY2 (Inboard)
24
6BY2 (Stern Drive)
25
Engine Piping Diagrams
26
4By2
26
6By2
27
Location of Nameplates
29
Engine Nameplates (Typical)
29
Diesel Fuel
30
Diesel Fuel Specifications
30
Bleeding the Fuel System
32
Engine Oil
32
Engine Oil Specifications
32
Acceptable Engine Oil
34
Recommended Marine Gear or Stern Drive Oil
36
Recommended Power Steering Fluid
36
Engine Coolant
37
Engine Coolant Specifications
37
Acceptable Engine Coolant
38
Principal Engine Specifications
39
Tightening Torques for Standard Bolts and Nuts
41
Tightening Fasteners
41
Hexagon Bolts and Nuts
41
Hose Clamps
41
Prepare Engine for Long-Term Storage
42
Abbreviations and Symbols
43
Abbreviations
43
Symbols
43
Unit Conversions
44
Unit Prefixes
44
Units of Length
44
Units of Volume
44
Units of Mass
44
Units of Force
44
Units of Torque
44
Units of Pressure
44
Units of Power
44
Units of Temperature
44
Periodic Maintenance
45
Safety Precautions
47
Introduction
47
The Importance of Periodic Maintenance
47
Performing Periodic Maintenance
47
Yanmar Replacement Parts
47
Required EPA Maintenance
47
EPA Requirements
47
Conditions to Ensure Compliance with EPA Emission Standards
47
Inspection and Maintenance
48
Periodic Maintenance Schedule
49
Periodic Maintenance Procedures
53
After Initial 50 Hours of Operation
53
Every 50 Hours of Operation
54
Every 250 Hours of Operation
55
Every 500 Hours of Operation
59
Every 1000 Hours of Operation
61
Every 2000 Hours of Operation
61
Engine
63
Safety Precautions
65
Introduction
65
Specifications
66
General Information
66
Test and Adjustment Specifications
66
Repair Specifications
67
Special Torque Chart
70
Special Service Tools
73
Measuring Instruments
74
Sealants and Compounds
75
Tests and Adjustments
76
Test Compression
76
Repair
77
Cylinder Head
78
Cylinder Head Components
78
General Guidelines
79
Remove and Install Cylinder Head Cover
79
Remove and Install Glow Plugs
81
Remove Cylinder Head
81
Disassemble Cylinder Head
84
Clean Cylinder Head Components
86
Pressure Test the Cylinder Head
86
Inspect Cylinder Head Components
86
Replace Valve Stem Seals
87
Assemble Cylinder Head
88
Determine Cylinder Head Gasket Thickness
88
Install Cylinder Head
89
Pistons and Cylinders
93
Remove and Disassemble Piston and Connecting Rod
93
Inspect Pistons and Piston Rings
94
Assemble Piston and Connecting Rod
95
Install Piston and Connecting Rod
96
Flywheel and Flywheel Housing
99
Remove and Install Flywheel Housing
99
Remove and Install Drive Coupling
100
Remove Flywheel
101
Replace Rear Crankshaft Seal
102
Install Flywheel
103
Camshaft and Timing Gear Train
104
Components
104
Check and Adjust Camshaft Timing
106
Remove and Install Vibration Damper - 4BY2
108
Remove and Install Vibration Damper - 6BY2
109
Remove Timing Case Cover
110
Remove and Install Timing Chain
111
Install Timing Case Cover
111
Remove and Install Timing Chain Tensioner
112
Remove Camshafts
113
Install Camshafts
116
Cylinder Block and Crankshaft
118
Components
118
Remove Crankshaft
120
Measure Oil Clearance
121
Inspect Crankshaft
123
Inspect Cylinder Block
124
Install Crankshaft
124
Replace Front Crankshaft Seal
126
Intake Manifold
128
Remove
128
Install
129
Exhaust Manifold
131
Remove
131
Install
131
Fuel System
135
Safety Precautions
135
Introduction
135
Specifications
136
Test and Adjustment Specifications
136
Special Torque Chart
136
Special Service Tools
137
Fuel System Components
138
4BY2 Engines
138
6BY2 Engines
138
Fuel Flow Diagram
139
Tests and Adjustments
141
Measure Fuel Feed Pump Pressure
141
Test Return Fuel Pressure
142
Repair
143
Remove Fuel Injector
143
Clean Fuel Injector Cavities
144
Install Fuel Injector
145
Remove and Install High-Pressure Fuel Lines
146
Replace the Fuel Feed Pump
147
Replace High-Pressure Fuel Pump
147
Replace Fuel Filters
151
Remove and Install Fuel Rail
152
Replace Injector Return Fuel Line
153
Bleed the Fuel System
154
Cooling System
155
Safety Precautions
157
Introduction
158
Specifications
158
Test and Adjustment Specifications
158
Repair Specifications
158
Special Torque Chart
158
Special Service Tools
159
Measuring Instruments
159
Cooling Flow Diagram
160
Tests and Adjustments
161
Pressure Test Cooling System and Filler Cap
161
Test Thermostat
162
Repair
162
Drain and Refill Seawater Cooling System
162
Check and Replace Anodes
163
Drain and Fill Closed Cooling System
164
Disconnect and Connect Quick-Connect Fittings
165
Remove and Install Hydraulic Oil Cooler
165
Inspect and Clean Hydraulic Oil Cooler
166
Remove and Install Charge Air Cooler
166
Disassemble and Assemble Charge Air Cooler
167
Remove and Install Heat Exchanger
167
Disassemble and Assemble Heat Exchanger
168
Remove and Install Coolant Pump
169
Remove and Install Thermostat
170
Seawater Pump
172
Lubrication
175
Safety Precautions
177
Introduction
177
Specifications
178
Test and Adjustment Specifications
178
Special Torque Chart
178
Special Service Tools
179
Measuring Instruments
179
Tests and Adjustments
180
Engine Oil Flow
180
Check Engine Oil Pressure
181
Repair
182
Engine Lubrication System Components
182
Change Engine Oil and Replace Engine Oil Filter Element
183
Remove and Install Oil Cooler
183
Remove and Install Oil Filter Housing
185
Remove and Install Oil Sump
185
Oil Pump
186
Turbocharger
187
Safety Precautions
189
Introduction
189
Specifications
189
Test and Adjustment Specifications
189
Special Torque Chart
189
Special Service Tools
190
Sealants and Compounds
190
Tests and Adjustments
191
Measure Charge Pressure
191
Repair
192
Remove Turbocharger
192
Install Turbocharger
192
Starter Motor
195
Safety Precautions
197
Introduction
197
Starter Motor Specifications
197
General Specifications
197
Special Torque Chart
197
Starter Motor Troubleshooting
198
Remove and Install Starter Motor
199
Alternator
203
Safety Precautions
203
Introduction
204
Specifications
204
General Specifications
204
Special Torque Chart
204
Repair
205
Replace Alternator Belt
205
Remove and Install Alternator
205
Remove and Install Alternator Belt Tensioner
206
Electrical and ECU
207
Safety Precautions
209
Introduction
209
Specifications
209
Special Torque Chart
209
Function Description - Engine Management System
210
Component Locations
210
Electrical Panel Connector (X1) Connections
214
Engine Control Unit (ECU) Assignments
216
Component Tests
218
Relays
218
Oil Pressure Sensor
220
Fuel Injector
220
Engine Coolant Temperature Sensor
221
High-Pressure Fuel Regulator
221
Water-In-Fuel Sensor
222
Crankshaft Speed Sensor
222
Glow Plug / Control Unit
223
Fuel Temperature Sensor
224
Fuel Volume Regulator
224
Charge Air Temperature Sensor
225
Charge Air Pressure Sensor
225
High-Pressure Fuel Rail Pressure Sensor
226
Camshaft Speed Sensor
226
Throttle Position Sensor
227
Repair
228
Replace Engine Control Unit (ECU)
228
Replace Coolant Temperature Sensor
228
Replace Charge Air Pressure Sensor
229
Replace Charge Air Temperature Sensor
229
Replace Crankshaft Sensor
230
Replace Camshaft Sensor
230
Replace High-Pressure Fuel Regulator
231
Replace High-Pressure Fuel Rail Pressure Sensor
232
Replace Fuel Temperature Sensor
232
Replace Fuel Volume Regulator
233
Replace Oil Pressure Sensor
233
Troubleshooting
235
Safety Precautions
237
Introduction
237
Engine Faults and Torque Limitations
237
Torque Limitation for Failed Sensors Mode
237
Torque Limitation for Smoke Limitation Mode
237
Torque Limitation for Overheat Protection Mode
239
Troubleshooting Chart
240
Starting Trouble
240
Exhaust Color
240
Vibration - Drive Disengaged
241
Vibration - Drive Engaged
241
Engine Knocks
242
Low Power Output
242
Engine Overheat
242
Engine Runs Cold
243
Coolant Loss
243
Helm Panel Display
243
Trouble Codes
244
Working Procedure
244
Diagnostic Trouble Codes
244
After Troubleshooting or Repair
248
Advertisement
Yanmar 6BY2 Operation Manuals (88 pages)
BY series
Brand:
Yanmar
| Category:
Engine
| Size: 14.73 MB
Table of Contents
Table of Contents
3
Introduction
7
Record of Ownership
8
Safety
9
Safety Precautions
10
General Information
10
Before You Operate
10
During Operation and Maintenance
10
Safety Decals
14
Product Overview
15
Yanmar BY-Series Features and Applications
15
New Engine Break in
16
Component Identification
17
Left Side (as Viewed from Flywheel) - 4BY2
17
Right Side (as Viewed from Flywheel) - 4BY2
17
Top View - 4BY2
18
Left Side - 6BY2
18
Right Side - 6BY2
19
Top View - 6BY2
19
Location of Nameplates
20
Function of Major Components
22
Fuses and Relays
24
Engine Cover
25
Before You Operate
27
Diesel Fuel
28
Diesel Fuel Specifications
28
Filling the Fuel Tank
30
Bleeding the Fuel System
30
Engine Oil
31
Engine Oil Specifications
31
Acceptable Engine Oil
32
Checking Engine Oil
35
Adding Engine Oil
35
Marine Gear or Stern Drive Oil
36
Power Steering Fluid Specifications
36
Checking Power Steering Fluid Level
36
Engine Coolant
37
Acceptable Engine Coolant
37
Engine Operation
39
Starting the Engine
40
Starting at Low Temperatures
41
Shutting down the Engine
41
Emergency Shut down
41
Checking the Engine after Operation
42
Periodic Maintenance
43
Safety Precautions
43
Precautions
45
The Importance of Periodic Maintenance
45
Performing Periodic Maintenance
45
The Importance of Daily Checks
45
Keep a Log of Engine Hours and Daily Checks
45
Yanmar Replacement Parts
45
Tools Required
45
Ask Your Authorized Yanmar Marine Dealer or Distributor for Help
45
Required EPA Maintenance
45
EPA Requirements
46
Conditions to Ensure Compliance with EPA Emission Standards
46
Inspection and Maintenance
46
Tightening Fasteners
46
Standard Torque Values
47
Periodic Maintenance Schedule
48
Inspection and Maintenance of EPA Emission-Related Parts
52
Daily Checks
52
Visual Checks
52
Checking Diesel Fuel, Engine Oil and Engine Coolant Levels
53
Checking the Battery Electrolyte Level
53
Checking the Alarm Indicators
53
Preparing Fuel, Oil and Coolant in Reserve
53
Checking Power Steering Fluid
53
Draining the Fuel / Water Separator
53
Periodic Maintenance Procedures
54
After Initial 50 Hours of Operation
54
Every 50 Hours of Operation
55
Every 250 Hours of Operation
56
Engine Mounts
60
Every 500 Hours of Operation
61
Every 1000 Hours of Operation
62
Every 2000 Hours of Operation
63
Troubleshooting
65
Troubleshooting Information
65
Troubleshooting Chart
66
Starting Trouble
66
Exhaust Color
67
Vibration - Drive Disengaged
67
Vibration - Drive Engaged
68
Engine Knocks
68
Low Power Output
68
Engine Overheat
69
Engine Runs Cold
69
Coolant Loss
69
Diagnostic Trouble Codes
70
Diagnostic Trouble Code Table
71
Long-Term Storage
75
Prepare Engine for Long-Term Storage
75
Draining the Seawater Cooling System
76
Specifications
77
Engine Specifications
77
EPA Warranty USA Only
81
Yanmar Co., Ltd. Limited Emission Control System Warranty - USA Only
81
Your Warranty Rights and Obligations
81
Warranty Period
82
Warranty Coverage
82
Exclusions
82
Owner's Responsibility
82
Customer Assistance
83
2008 Yanmar Marine International
84
Maintenance Log
84
Advertisement
Related Products
Yanmar 6BY3-220
Yanmar 6BY3-220Z
Yanmar 6BY3-260
Yanmar 6BY3-260Z
Yanmar 6BY
Yanmar 6CXM-GTE
Yanmar 6LY2A-STP
Yanmar 6LYA-STP
Yanmar 6LY3-UTC
Yanmar 6LY3-UTP
Yanmar Categories
Engine
Tractor
Portable Generator
Outboard Motor
Excavators
More Yanmar Manuals
Login
Sign In
OR
Sign in with Facebook
Sign in with Google
Upload manual
Upload from disk
Upload from URL