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ZD21F
Kubota ZD21F User Manual
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4-S2
ZD18(F) · ZD21(F) · ZD28(
F), WSM
HYDRAULIC SYSTEM
2.
SERVICING SPECIFICATIONS
W1013874
Item
Factory Specificat
ion
Allowable
Limit
Relief V
alve (Control V
alve)
Sett
ing Pressure
3.1
4 to 3.73 MPa
32 to 3
8 kgf/cm
2
455 to 540 psi
–
KiSC issued 04, 2009 A
206
208
Table of Contents
General
19
Table of Contents
19
Identification
20
General Precautions
21
Handling Precautions for Electrical Parts and Wiring
22
Wiring
22
Battery
24
Fuse
24
Connector
24
Handling of Circuit Tester
25
Lubricants, Fuel and Coolant
26
Metric Screws, Bolts and Nuts
28
Tightening Torques
28
General Use Screws, Bolts and Nuts
28
American Standard Screws, Bolts and Nuts with Unc or Unf Threads
29
Maintenance Check List
30
Check and Maintenance
31
Daily Check
31
Check Points of Initial 50 Hours
35
Check Point of Initial 100 Hours
37
Checking Points of Initial 200 Hours
38
Check Points of Every 50 Hours
40
Check Points of Every 100 Hours
44
Check Points of Every 150 Hours
49
Check Points of Every 200 Hours
49
Check Points of Every 400 Hours
51
Check Points of Every 1 Year
51
Check Point of Every 2 Years
54
Others
55
Special Tools
57
Special Tools for Engine
57
Special Tools for Machine
63
Servicing
66
Troubleshooting
67
Engine Body
71
Servicing Specifications[D722-E-Xfm5, D782-E-Xfm5]
71
Cooling System
75
Lubricating System
75
Fuel System
76
Engine Body
77
Servicing Specifications[D1105-E-Zd]
77
Cooling System
81
Lubricating System
81
Fuel System
82
Tightening Torques
83
Checking, Disassembling and Servicing
85
Disassembling and Assembling
85
Separating Engine
85
Checking and Adjusting
91
Engine Body
91
Disassembling and Assembling
94
Servicing
110
Checking
134
Servicing
134
Mechanism
144
Structure
145
Hydrostatic Transmission
146
Structure
146
Travelling System
146
Check Valve
148
Pump and Motor
148
Check and High Pressure Relief Valve
149
Oil Flow
150
Power Trains Operation
153
Control Linkage
155
Final Reduction Gear Section
156
PTO System
157
Servicing
160
Troubleshooting
161
Servicing Specifications
163
Tightening Torques
164
Checking and Adjusting
165
Disassembling and Assembling
171
Separating Transaxle
171
Hydrostatic Transmission
182
Servicing
182
Transmission Case
184
Servicing
189
Troubleshooting
190
Servicing Specifications
191
Tightening Torques
192
Checking and Adjusting
193
Checking, Disassembling and Servicing
193
Disassembling and Assembling
194
Separating Front Wheel and Wheel Bracket
194
Mechanism
196
Hydraulic Circuit
197
Hydraulic Pump
199
Hydraulic Control Valve and Valve Adaptor
200
Lift Cylinder
203
Mower Linkage
204
Servicing
205
Troubleshooting
206
Servicing Specifications
207
Checking and Adjusting
208
Checking, Disassembling and Servicing
208
Disassembling and Assembling
208
Hydraulic Control Valve, Pump and Cylinder
208
Disassembling and Assembling
210
Lift Cylinder
210
Mechanism
212
Wiring Diagram
213
Starting System
217
Starter
219
Glow Plug
220
Safety Switch (Limit Switch)
220
Engine Stop Solenoid
221
Fuel Pump
221
Charging System
222
Ac Dynamo
223
Regulator
223
Easy Checker
224
Fuel Quantity
225
Gauges
225
Coolant Temperature
226
Servicing
227
Troubleshooting
228
Servicing Specifications
230
Tightening Torques
231
Battery
232
Checking
232
Checking, Disassembling and Servicing
232
Checking
234
Starting System
234
Disassembling and Assembling
239
Servicing
239
Charging System
242
Checking
242
Disassembling and Assembling
242
Servicing
243
Checking
244
Lighting System
244
Checking
245
Gauges
245
Servicing
250
Troubleshooting
251
Servicing Specifications
252
Tightening Torques
253
Checking and Adjusting
254
Checking, Disassembling and Assembling
254
Disassembling and Assembling
257
General
270
Identification
271
General Precautions
272
Handling Precautions for Electrical Parts and Wiring
273
Wiring
273
Battery
275
Connector
275
Fuse
275
Handling of Circuit Tester
276
Lubricants, Fuel and Coolant
277
General Use Screws, Bolts and Nuts
279
Stud Bolts
279
Tightening Torques
279
American Standard Screws, Bolts and Nuts with Unc or Unf Threads
280
Metric Screws, Bolts and Nuts
280
Plugs
280
Maintenance Check List
281
Check and Maintenance
282
Daily Check
282
Check Points of Initial 50 Hours
287
Check Point of Initial 100 Hours
288
Checking Points of Initial 200 Hours
289
Check Points of Every 50 Hours
291
Check Points of Every 100 Hours
295
Check Points of Every 150 Hours
300
Check Points of Every 200 Hours
300
Check Points of Every 1 Year
302
Check Points of Every 400 Hours
302
Check Point of Every 2 Years
305
Others
306
Special Tools
308
Special Tools for Engine
308
Special Tools for Machine
314
Servicing
316
Troubleshooting
317
Engine Body
321
Servicing Specifications [D1005-E2-Zd]
321
Cooling System
325
Lubricating System
325
Fuel System
326
Checking, Disassembling and Servicing
328
Disassembling and Assembling
328
Separating Engine
328
Checking and Adjusting
331
Engine Body
331
Disassembling and Assembling
334
Servicing
345
Checking
361
Lubricating System
361
Servicing
361
Checking and Adjusting
363
Cooling System
363
Disassembling and Assembling
365
4
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Kubota ZD21F Specifications
General
Brand
Kubota
Model
ZD21F
Category
Lawn Mower
Language
English
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