Kubota W5021-SC Manual

CONTENTS
SPECIFICATIONS----------1
DIMENSIONS 13
M. MECHANISM
1 . E N G I N E - - - - - - - - - - - - M-1
2. TRANSMISSION
[1] AUTOMATIC PRESSURE (EXCEPT -P, -PC, -PCC) M-5
RELIEVING MECHANISM ....................... M-l [1] POWER TRAIN ...................................... M·5
[2] CARBURETOR ........................................ M-3
3. MOWER BLADE CLUTCH
[3] SUB PTO SHAFT
(EXCEPT .p, .T) - - - - - - - - - M-9
(Except -P, -PC, -PCC) ··.......... ······ .. ···· .... ·M-3
G. GENERAL
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S.
[1] IDENTIFICATION ······································5-1
,[2] GENERAL SAFETy··································· 5-1
[3] GENERAL PRECAUTION .......................... 5-3 [3] FUEl SYSTEM ........................................ 5-91
[4] LUBRICANTS AND FUEL.······ ...... ·············S-3
[5] TROUBLESHOOTING ································S-5
[6] SERVICING SPECIFICATIONS··················S-ll
[7] TIGHTENING TORQUES ......................... S-24
(1) Tightening Torques for Important (1) Carburetor ........................................ S-93
S-95 Screws, Bolts and Nuts ...................... S-24 [4] IGNITION SYSTEM ................................
(2) Tightening Torques for General
Use Screws, Bolts and Nuts ................ S-24 (1) Spark PI ug ......................................... 5-95
[8] MAINTENANCE CHECK LIST ................. S-27 (2) Ignition Unit ..................................... S-95
[9] CHECK AND MAINTENANCE ................ S-29 (3) Stop Switch ....................................... S-97
(1) Check Points of Each Use
or Daily·· .. ·.···· ..······ ............................ S-29 CHECKING .. ··· ........· ...... · ..···.... · .... ···..· .. · .... S-99
(2) Check Points of First Month
or Initial 20 Hours ............................. S-33
(3) Check Points of Every 3 Months [6] CHARGING SYSTEM ·····..· ...... ··· ..···..· .... S-103
or 50 Hours ........................................ S-35
(4) Check Points of Every 6 Months
or 100 Hours ...................................... S-35 DISASSEMBLING AND ASSEMBLING ..·.. S-105
(5) Check Points of Every Year SERVICING ... ············ ...... ··· .... ············ ...... S-105
or 300 Hours ...................................... S-41
[10] SPECIAL TOOLS ··...... ···· ...... ·· ..·········· .... ·5-43 (EXCEPT -P, -PC, -PCC) S-111
1.
DISASSEMBLING AND ASSEMBLING .... ···S-47 [2] TRANSMISSION ................................... S-113
[2] ENGINE BODY ·.·· ...... ··· .... ·· .. ······· .... ··· ....·S-51
CHECKING AND ADJUSTING ····.......... ·· .. ·S-51 SERVICING ............................................. S-115
DISASSEMBLING AND ASSEMBLING ....·.. S-51
(1) External Components ....................... S-51
(2) Cylinder Head and Valves ................. S-59 SERVICING ............................................. S-125
(3) Camshaft, Piston and Crankshaft ...... S-61
SERVICING ............................................... S-71
(1) Valves··· .... · .... ···........ ··..........· .... ·..· .... S-71
(2) Cylinder liner .................................... S-77
(4) Connecting Rod, Crankshaft and . : .
Camshaft···········································5-83
~
CHECKING AND ADJUSTING ···················S-91 . : .
(1) Governor ........................................... S-91
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(2) ChokeRod· ............ ··········· ... ···· ...... ··.·S·91
DISASSEMBLING AND ASSEMBLING ·······S-93
CHECKING AND ADJUSTING ···················5-95
[5] STARTING SYSTEM ········..······················S-99
DISASSEMBLING AND ASSEMBLING ··..·S-101
SERVICING ............................................. S-l 01
CHECKING ...... · .................. · ..·.. ·· .. · .......... S-l 03
2. MOWER BLADE CLUTCH AND BLADE - S-105
3. TRANSMISSION
ENGINE S-47
[1] SEPARATING ENGINE ······· ........ · .... · ..·· ..·5-47
[1] SEPARATING TRANSMISSION ....····......S-lll
DISASSEMBLING AND ASSEMBLING ·.... S-111
DISASSEMBLING AND ASSEMBLING .... ·S-l13
4. FRONT WHEEL AND REAR WHEEL--S-121
DISASSEMBLING AND ASSEIVIBLING ··..·S-121
5. HANDLE AND DISCHARGE GUARD --S-129
CHECKING AND ADJUSTING ..........·· .. ···S-129
DISASSEMBLING AND ASSEMBLING .... ·S-129