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1-S13
ZD21N-EC, ZD21-EC, ZD28-EC, WSM
ENGINE
ENGINE BODY (Continued)
W1019055
Item
Factory Specification
Allowable Limit
Timing Gear
Crank Gear to Idle Gear
Idle Gear to Cam Gear
Idle Gear to Injection Pump Gear
Injection Pump Gear to Governor
Gear
Backlash
Backlash
Backlash
Backlash
0.032 to 0.115 mm
0.0013 to 0.0045 in.
0.036 to 0.114 mm
0.0014 to 0.0045 in.
0.034 to 0.116 mm
0.0013 to 0.0046 in.
0.032 to 0.118 mm
0.0013 to 0.0046 in.
0.15 mm
0.0059 in.
0.15 mm
0.0059 in.
0.15 mm
0.0059 in.
0.15 mm
0.0059 in.
Idle Gear
Side Clearance
0.20 to 0.51 mm
0.0079 to 0.0200 in.
0.8 mm
0.0315 in.
Idle Gear Shaft to Gear Bushing
Idle Gear Shaft
Gear Bushing
Clearance
O.D.
I.D.
0.020 to 0.054 mm
0.0008 to 0.0021 in.
25.967 to 25.980 mm
1.0223 to 1.0228 in.
26.000 to 26.021 mm
1.0236 to 1.0244 in.
0.10 mm
0.0039 in.
–
–
Piston Pin Bore
I.D.
22.000 to 22.013 mm
0.8661 to 0.8667 in.
22.03 mm
0.8673 in.
Piston Ring Clearance
Second Ring
Oil Ring
0.095 to 0.112 mm
0.0037 to 0.0044 in
0.02 to 0.06 mm
0.0008 to 0.0022 in.
0.20 mm
0.0079 in.
0.15 mm
0.0059 in.
Ring Gap
Top Ring and
Second Ring
Oil Ring
0.30 to 0.45 mm
0.0118 to 0.0177 in.
0.25 to 0.40 mm
0.0098 to 0.0157 in.
1.25 mm
0.0492 in.
1.25 mm
0.0492 in.
Connecting Rod
Alignment
–
0.05 mm
0.0020 in.
Piston Pin to Small End Bushing
Piston Pin
Small End Bushing
Clearance
O.D.
I.D.
0.014 to 0.038 mm
0.00055 to 0.00150 in.
22.002 to 22.011 mm
0.86622 to 0.86657 in.
22.025 to 22.040 mm
0.86713 to 0.86771 in.
0.15 mm
0.0059 in.
–
–
Crankshaft
Alignment
–
0.02 mm
0.0008 in.
KiSC issued 09, 2006 A
Summary of Contents for ZD21-EC
Page 1: ...ZD21N EC ZD21 EC ZD28 EC WORKSHOP MANUAL ZERO TURN MOWER KiSC issued 09 2006 A ...
Page 7: ...5 ZD21N EC ZD21 EC ZD28 EC WSM SAFETY INSTRUCTIONS KiSC issued 09 2006 A ...
Page 8: ...6 ZD21N EC ZD21 EC ZD28 EC WSM SAFETY INSTRUCTIONS KiSC issued 09 2006 A ...
Page 11: ...9 ZD21N EC ZD21 EC ZD28 EC WSM DIMENSIONS DIMENSIONS KiSC issued 09 2006 A ...
Page 12: ...G GENERAL KiSC issued 09 2006 A ...
Page 59: ...1 ENGINE KiSC issued 09 2006 A ...
Page 60: ...CONTENTS MECHANISM 1 FUEL SYSTEM 1 M1 1 GOVERNOR 1 M1 KiSC issued 09 2006 A ...
Page 138: ...2 TRANSAXLE KiSC issued 09 2006 A ...
Page 178: ...3 FRONT AXLE KiSC issued 09 2006 A ...
Page 179: ...CONTENTS MECHANISM 1 STRUCTURE 3 M1 KiSC issued 09 2006 A ...
Page 187: ...4 HYDRAULIC SYSTEM KiSC issued 09 2006 A ...
Page 202: ...5 ELECTRICAL SYSTEM KiSC issued 09 2006 A ...
Page 205: ...5 M2 ZD21N EC ZD21 EC ZD28 EC WSM ELECTRICAL SYSTEM ZD28 KiSC issued 09 2006 A ...
Page 206: ...5 M3 ZD21N EC ZD21 EC ZD28 EC WSM ELECTRICAL SYSTEM ZD21N ZD21 KiSC issued 09 2006 A ...
Page 207: ...5 M4 ZD21N EC ZD21 EC ZD28 EC WSM ELECTRICAL SYSTEM ZD28 KiSC issued 09 2006 A ...
Page 237: ...6 ROTARY MOWER KiSC issued 09 2006 A ...
Page 238: ...CONTENTS MECHANISM 1 POWER TRANSMISSION 6 M1 2 LIFTING MECHANISM 6 M2 KiSC issued 09 2006 A ...