Makita EM4251CA Quick start guide

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Prior to April 2008
steel-made cowling
(141 and 142 are included.)
140
210190
146
49
144
143
147
142
141
Implemented April 2008
(146 and 190 are integrated to 140)
To receive 217, the air intake portion has been modified.
210 Change from Pan head screw to Hex. socket head bolt
147 Change from Pan head screw to Hex. socket head bolt
217
218
49
144
140
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168
150
165
151
157
160
152
154
212
158
164
166
167
162 163 161
159
155
153
211
156
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175
176
177
174
182
183
181
180
178
179
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216
220
221
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Tech Bulletin Fig. No Part No. Description Q'ty Unit Notes
1 624-10030-00 SHAFT PIPE CPL.,EM4251 1
2 324893-4 SHAFT, EM2650LH 1
8 627-15015-01 SPACER, EM4251 1
8 627-15015-00 SPACER, EM4251 1
9 625-40190-00 HANGER ASSY, RBC251 1
10 004-36052-00 SCREW & WASHER ASS'Y, RBC281 1
11 621-40160-00 HANDLE SET, RBC2510 1
12 627-40040-10 LOOP HANDLE, EM4251 1
13 621-40140-10 GUARD STAY, EM4251 2
Y04526 14 621-40160-20 HANDLE HOLDER, RBC2510 1
14 621-40160-20 HANDLE HOLDER, RBC2510 1
15 621-40160-30 SCREW, RBC2510 2
16 624-50030-00 CONTROL LEVER ASS'Y, EM4251 1
17 624-30060-02 GEAR CASE ASS'Y, RBC2510 1
18 922241-7 H.S.H. BOLT M5X25 1
19 621-25003-00 BALL BEARING 609ZZ, RBC230 1
20 961005-4 RETAINING RING S-9, 6832 1
21 962103-7 RETAINING RING R-24 1
22 060-00699-90 BALL BEARING 626ZZ, EM4251 1
23 624-30080-02 CUTTER SHAFT SET, RBC2510 1
24 060-01099-10 BALL BEARING DDU, RBC2510 1
25 003-14260-00 INNER SNAP RING, RBC230 1
26 621-85016-01 RECEIVE WASHER, EM4251 1
27 621-80030-01 CLAMP CPL. WASHER, EM4251 1
28 625-85050-01 NUT, RBC255 1
29 621-85002-00 GUARD, RBC230 1
30 014-00593-90 SCREW ASSEMBLY 2
31 625-30110-12 OIL BOLT M6X9, RBC201 1
32 004-31050-60 PAN HEAD SCREW, RBC252 1
34 624-95085-00 CAUTION LABEL, EM4251CA 1
35 621-80080-03 PROTECTOR ASS'Y, RBC321 1
36 641-85003-03 PROTECTOR CLAMP, EM4251 1
37 001-17063-00 BOLT M6X30, EM4251 2
38 015-00599-40 TAPPING SCREW, RBC201 1
40 619-50060-30 LEVER, EM4251 1
41 621-50230-60 LEVER, EM4251 1
42 621-50230-50 ADJUST CPL.,EM4251 1
43 624-50030-10 WIRE SET, EM4251 1
44 624-50030-20 WIRE CPL.,EM4251 1
45 619-50060-50 SPRING, EM4251 1
46 011-90597-20 S.H. BOLT M5X20, EM4251 2
47 641-50111-60 NUT M5, EM4251 2
48 619-50060-60 T. SCREW M4X20, EM4251 4
Y05305 49 592-10240-00 CYLINDER BLOCK SET, EM4251 1 April 2008 production
49 592-10050-04 CYLINDER BLOCK SET, EM4251 1
50 592-15012-00 BALL, EM4251 2
51 592-15005-02 CAMGEAR COVER, EM4251 1
52 592-10040-01 ROCKER COVER CPL., EM4250 1
53 592-15007-00 CAMGEAR COVER GASKET, EM4251 1
Products with multiple versions are listed in subsiding order with the newest version on top not indented.
Corresponding bulletins are attached. Select bulletin name or attachment to view.
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Tech Bulletin Fig. No Part No. Description Q'ty Unit Notes
Products with multiple versions are listed in subsiding order with the newest version on top not indented.
Corresponding bulletins are attached. Select bulletin name or attachment to view.
54 592-15008-00 ROCKER COVER GASKET, EM4251 1
55 592-15010-00 LEAD VALVE, EM4251 1
56 592-15011-00 RETAINER PLATE, EM4251 1
57 011-90499-80 S.H. BOLT M4X10, EM4251 1
Y05610 58 011-90595-10 S.H. BOLT M5X14, EM4251 3
58 004-36051-60 SCREW ASS'Y M5X16(W,SW),EM4251 3
59 011-90595-10 S.H. BOLT M5X14, EM4251 6
60 011-90595-10 S.H. BOLT M5X14, EM4251 2
Y05610 61 011-90595-10 S.H. BOLT M5X14, EM4251 3
61 004-36051-40 SCREW M5X14, RBC251 3
62 624-15002-03 CLUTCH CASE, EM4251 1
63 922222-1 H.S.H. BOLT M5X16 3
64 592-65000-00 OIL CASE, EM4251 1
65 592-65001-00 CASE GASKET, EM4251 1
66 592-65002-00 OIL TUBE, EM4251 1
67 592-65003-00 OIL WEIGHT, EM4251 1
68 592-65006-00 OIL GAUGE, EM4251 1
69 021-30699-90 GASKET, RBC230 1
69 021-31699-90 GASKET, EM4251 1
Y05404 70 011-90595-10 S.H. BOLT M5X14, EM4251 4
70 004-36051-80 SCREW ASSEMBLY, RBC230 4
71 065-01099-50 SPARK PLUG CMR6A, EM4251 1
72 592-35038-00 WASHER, EM4251 1
73 624-20030-00 CLUTCH DRUM CPL.,EM4251 1
74 962151-6 RETAINING RING R-32 1
75 060-01299-50 BALL BEARING 6201DD/6201 2RU,RBC261 1
76 961052-5 RETAINING RING S-12 1
77 450569-8 SPACER, EM2650LH 1
78 624-15004-01 PIPE DAMPER 1, EM4251 1
79 624-15005-01 PIPE DAMPER 2, EM4251 1
80 624-15006-01 PIPE BRACKET 1, EM4251 1
81 624-15007-01 PIPE BRACKET 2, EM4251 1
82 922211-6 HEX. SOCKET HAD BOLT M5X12, EM2650L
H
1
83 922226-3 H. S. H. BOLT M5X18 2
84 521-90020-00 STAND SET, RBC230 1
85 014-00594-80 SCREW M5X14, EH561 2
86 592-20030-00 CRANKSHAFT ASS'Y, EM4251 1
87 044-01299-60 OIL SEAL (L), EM4251 1
88 044-01099-70 OIL SEAL (S), EM4251 1
89 542-15005-00 CLIP, EM4251 1
90 592-25009-00 PISTON, EM4251 1
91 592-20040-00 PISTON RING SET, EM4251 1
92 056-50899-70 CLIP, RST250 2
93 257781-9 PISTON PIN, EM2650LH 1
94 424200-2 SPACER, EM2650LH 2
95 592-35000-01 CAM LIFTER, EM4251 2
96 593-30030-00 CAM GEAR ASSEMBLY, EM4250 1
97 592-35005-01 CAM GEAR SHAFT, EM4251 1
98 592-35006-00 CAM LIFTER SHAFT, EM4251 1
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Tech Bulletin Fig. No Part No. Description Q'ty Unit Notes
Products with multiple versions are listed in subsiding order with the newest version on top not indented.
Corresponding bulletins are attached. Select bulletin name or attachment to view.
99 592-35007-00 PUSH ROD, EM4251 2
100 593-30020-00 ROCKER ARM ASS'Y, BHX2500 2
101 256200-2 PIN 5 1
102 592-35012-00 VALVE SPRING, EM4251 2
103 592-35013-00 SPRING RETAINER, EM4251 2
104 592-35014-00 EXHAUST VALVE, EM4251 1
105 592-35015-00 INTAKE VALVE, EM4251 1
106 592-50010-02 STARTER COVER ASS'Y, EM4251 1
107 451937-8 REEL, EM2650LH 1
108 266585-8 TAPPING SCREW 5X12, EM2650LH 1
109 232258-5 SPIRAL SPRING, EM2650LH 1
110 451938-6 COLLAR, EM2650LH 1
111 325923-4 SWING ARM, EM2650LH 1
112 592-50010-50 STARTER ROPE, EM4251 1
113 424319-7 STARTER KNOB, EM2650LH 1
114 168483-1 PULLEY, EM2650LH 1
115 004-36042-50 SCREW ASS'Y M4X25, RBC201 2
116 023-00499-40 SPACER, EM4251 2
117 592-95008-00 TANK GUARD, EM4251 1
118 004-36051-00 SCREW ASSEMBLY, EH450 2
119 624-95087-00 MODEL LABEL, EM4251CA 1
120 592-60090-00 CARBURETOR, EM4250 1
121 140437-0 PUMP BODY, EM2650LH 1
122 140438-8 AIR PURGE BODY, EM2650LH 1
123 346270-0 PRIMER PUMP COVER, EM2650LH 1
124 424314-7 PRIMER PUMP, EM2650LH 1
125 592-60080-10 METERING DIAPHRAGM, EM4251 1
126 442154-1 METERING DIAPHRAGM GASKET, EM2650
L
1
127 168575-6 PUMP DIAPHRAGM, EM2650LH 1
128 442155-9 PUMP GASKET, EM2650LH 1
129 519-60020-20 JET, RBC201 1
130 213538-8 O RING 2, EM2650LH 1
131 257964-1 STOP RING E-3, EM2650LH 1
132 325922-6 SWIVEL, EM2650LH 1
134 266581-6 PAN HEAD SCREW M3X8, EM2650LH 2
136 266582-4 TAPPING SCREW 3X24, EM2650LH 4
137 234183-6 CONICAL COMPRESSION SPRING 5-9, EM2 1
138 413140-9 WASHER, EM2650LH 1
139 352010-6 INLET SCREEN, EM2650LH 1
Y05305 140 592-30160-00 INSULATOR COMPLETE 1 April 2008 production
140 592-30050-02 INSULATOR, EM4251 1
141 002-17050-00 NUT M5, EW110R 2
142 002-27060-00 NUT, G3510R 1
143 002-27060-00 NUT, G3510R 1
Y05305 144 592-35047-00 INSULATOR GASKET, EM4251 1
144 592-35018-01 INSULATOR GASKET, EM4251 1
145 592-35040-00 CARBURETOR GASKET, EM4250 1
146 592-35020-00 CARBURETOR INSULATOR, EM4251 1
Y05305 147 011-90598-70 SOCKET HEAD BOLT, RBC230 2
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Tech Bulletin Fig. No Part No. Description Q'ty Unit Notes
Products with multiple versions are listed in subsiding order with the newest version on top not indented.
Corresponding bulletins are attached. Select bulletin name or attachment to view.
147 004-36051-80 SCREW M5X18 2
148 014-90699-72 ADJUST SCREW M6X16, EM4251 1
149 524-60041-50 CAP, EM4251 1
150 592-15009-00 BREATHER PIPE, EM4251 1
151 593-30010-00 CLEANER PLATE ASSY, EM4250 1
152 593-30050-00 AIR CLEANER PLATE CPL, EM4250 1
153 531-65007-01 CHECK VALVE, EM4251 1
154 424316-3 CHECK VALVE, EM2650LH 1
155 592-35025-00 CHECK VALVE PLATE, EM4251 1
156 593-35016-00 SEPARATOR PLATE,MS2514 1
157 592-35022-00 CHOKE LEVER, EM4251 1
158 593-35012-00 AIR CLEANER ELEMENT,EM4250 1
159 024-01399-70 O RING P14, EM4251 1
160 213540-1 O RING 15, EM2650LH 1
161 592-35023-01 CHOKE PLATE, EM4251 1
162 592-35026-00 PLATE, EM4251 1
163 021-30699-90 GASKET, RBC230 1
164 593-35008-00 AIR CLEANER COVER,EM4250 1
165 592-35030-01 PIPE, EM4251 1
166 014-00594-80 SCREW M5X14, EH561 1
167 592-35031-00 SCREW M5X68(W,SW SUS),EM4251 2
168 345918-1 HOSE CLAMP, EM2650LH 1
169 592-30010-00 EXHAUST MUFFLER, EM4251 1
170 592-35016-01 MUFFLER GASKET, EM4251 1
171 592-35034-00 MUFFLER COVER, EM4251 1
172 011-90595-20 SOCKET HEAD BOLT M5X40, RBC201 2
173 014-00599-62 SCREW, EW110R 1
174 592-65024-00 FUEL TANK, EM4250CA 1 EM4251CA
174 592-65004-00 FUEL TANK, EM4251 1 EM4251
175 592-60030-00 TUBE, EM4251 1
176 523-65039-00 FILTER, RBL500 1
177 056-10599-90 HOSE CLAMP, EM4251 1
178 592-60120-00 FUEL TANK CAP, EM4251 1
179 525-60670-00 STRAP, RBC2510 1
180 810455-9 CAUTION PLATE, EM2650LH 1
181 503-65002-00 PLATE, RBC230 1
182 503-65003-00 PLATE RBC230 1
183 519-65003-02 DAMPER, EH450 1
184 592-70120-11 IGNITION COIL, BHX2500 1
Y05352 185 592-70010-21 FLYWHEEL 1
185 592-70010-20 FLYWHEEL, EM4251 1
186 592-75001-00 PLUG CAP, EM4251 1
187 065-40099-31 PLUG CAP SPRING,RBC221 1
188 592-70030-00 WIRE CPL.,EM4251 1
189 525-70180-01 WIRE COMPLETE, RBC201 1
190 525-75003-00 GROMMET, EH561 1
191 001-13061-60 BOLT ASS'Y, RBL500 1
192 003-12060-00 WASHER, G2400R 1
Y05610 193 011-90499-70 SOCKET HEAD BOLT, BBX7600 2
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Tech Bulletin Fig. No Part No. Description Q'ty Unit Notes
Products with multiple versions are listed in subsiding order with the newest version on top not indented.
Corresponding bulletins are attached. Select bulletin name or attachment to view.
193 004-37042-00 SCREW ASS'Y M4X20, BHX2500 2
193 014-00499-20 SCREW M4X20, RST250 2
194 592-85000-00 CLUTCH SHOE, EM4251 2
195 592-85001-00 SPRING, EM4251 1
196 592-85002-00 CLUTCH BOLT, EM4251 2
197 267812-6 WASHER 6, EM2650LH 2
198 592-55008-00 CYLINDER COVER, EM4251 1
199 004-36051-00 SCREW ASSEMBLY, EH450 2
200 004-36041-60 SCREW M4X16(W,SW),EM4251 2
201 592-75000-00 PLUG COVER, EM4251 1
202 056-60599-80 CLAMP, RBC201 1
203 592-95010-01 TRADE MARK LABEL, EM4250 1
207 592-30080-11 SPARK ARRESTER, EM4251 1
209 424201-0 CHECK VALVE, EM2650LH 2
Y05305 210 011-90597-80 S.H. BOLT M5X12, RBC230 1
210 004-36051-00 SCREW ASSEMBLY 1
211 592-35035-00 SEPARATOR GASKET, EM4251 1
212 593-35009-00 AIR CLEANER ELEMENT,EM4250 1
215 282020-8 HOSE CLAMP, EM2650LH 1
216 620-70030-02 BAND ASS'Y, EM4251 1
Y05305 217 592-35046-00 INTAKE PIPE 1
Y05610 218 213078-6 O RING 10, BHX2500 1
219 624-90060-00 TOOL KIT, EM4251 1
219 624-90000-00 TOOL SET 1
220 072-21046-00 OIL BOTTLE 1
220 072-21050-00 OIL BOTTLE, EM4251 1
221 B-60143 TRIMMER HEAD, RBC253 BUMP FEED 1
213 002-27050-00 NUT M5, RBC230 4
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