Makita EM4250CA Quick start guide

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 1 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 2 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 3 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 4 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 5 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 6 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 7 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
170
152
167
153
159
162
154
156
214
160
166
168
169
164 165 163
161
157
155
213
158
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 8 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 9 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
177
178
179
176
184
185
183
182
180
181
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 10 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 11 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
EM4251
1 of 16
06/10/2010
215
PARTS BREAKDOWN
EM4250CA
219
216
220
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 12 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
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
3 625-80280-02 PROTECTOR ASSY, EM4250 1
3 625-80600-01 PROTECTOR ASS'Y 1
4 625-80280-02 PROTECTOR ASSY, EM4250 1
4 625-80610-01 PROTECTOR ASS'Y 1
5 625-80280-02 PROTECTOR ASSY, EM4250 1
5 625-80530-01 PROTECTOR CPL., RBC2510 1
6 004-36054-00 P.H.SCREW M5X40, EM4251 2
7 002-18050-00 NUT, RBC225 2
8 625-40190-00 HANGER ASSY, RBC251 1
9 004-36052-00 SCREW & WASHER ASS'Y, RBC281 1
10 625-45000-00 GRIP, RBC260 1
11 621-45016-00 HANDLE, RBC252 1
12 621-45020-00 HANDLE, EM4250 1
13 625-40070-01 HANDLE HOLDER ASS'Y,EM4250 1
14 922241-7 H.S.H. BOLT M5X25, 4
15 922241-7 H.S.H. BOLT M5X25, 4
16 624-50020-00 CONTROL LEVER ASS'Y, EM4260 1
17 624-30060-02 GEAR CASE ASS'Y, RBC2510 1
18 922241-7 H.S.H. BOLT M5X25,
19 621-25003-00 BALL BEARING 609ZZ, RBC230 1
20 961005-4 H.S.H. BOLT M5X25 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
33 922218-2 H.S.H. BOLT M5X14 WITH WR 1
34 624-95084-00 CAUTION LABEL, EM4250CA 1
35 625-95147-00 CAUTION LABEL, RBC321 1
36 625-80280-02 PROTECTOR ASSY, EM4250 1
37 641-85003-03 PROTECTOR CLAMP, EM4251 1
38 001-17063-00 BOLT M6X30, EM4251 2
39 015-00599-40 TAPPING SCREW, RBC201 1
41 621-50220-30 LEVER , EM4250 1
42 621-50230-60 LEVER, EM4251 1
43 621-50230-50 ADJUST CPL.,EM4251 1
44 624-50020-10 WIRE SET, EM4250 1
45 624-50020-20 WIRE CPL., EM4250 1
46 619-50060-50 SPRING, EM4251 1
47 011-90599-80 S.H.BOLT M5X30, EM4250 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.
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 13 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
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.
48 621-50220-40 NUT M5 , EM4250 1
49 619-50060-60 T. SCREW M4X20, EM4251 2
Y05305 50 592-10240-00 CYLINDER BLOCK SET, EM4251 1 April 2008 production
50 592-10050-04 CYLINDER BLOCK SET, EM4251 1
51 592-15012-00 BALL, EM4251 2
52 592-15005-02 CAMGEAR COVER, EM4251 1
53 592-10040-01 ROCKER COVER CPL., EM4250 1
54 592-15007-00 CAMGEAR COVER GASKET, EM4251 1
55 592-15008-00 ROCKER COVER GASKET, EM4251 1
56 592-15010-00 LEAD VALVE, EM4251 1
57 592-15011-00 RETAINER PLATE, EM4251 1
58 011-90499-80 S.H. BOLT M4X10, EM4251 1
59 004-36051-60 SCREW ASS'Y M5X16(W,SW),EM4251 3
60 011-90595-10 S.H. BOLT M5X14, EM4251 6
61 011-90595-10 S.H. BOLT M5X14, EM4251 2
62 004-36051-40 SCREW M5X14, RBC251 3
63 624-15002-03 CLUTCH CASE, EM4251 1
64 922222-1 H.S.H. BOLT M5X16 3
65 592-65000-00 OIL CASE, EM4251 1
66 592-65001-00 CASE GASKET, EM4251 1
67 592-65002-00 OIL TUBE, EM4251 1
68 592-65003-00 OIL WEIGHT, EM4251 1
69 592-65006-00 OIL GAUGE, EM4251 1
70 021-30699-90 GASKET, RBC230 1
70 021-31699-90 GASKET, EM4251 1
Y05404 71 011-90595-10 S.H. BOLT M5X14, EM4251 4
71 004-36051-80 SCREW ASSEMBLY, RBC230 4
72 065-01099-50 SPARK PLUG CMR6A, EM4251 1
73 592-35038-00 WASHER, EM4251 1
74 624-20030-00 CLUTCH DRUM CPL.,EM4251 1
75 962151-6 RETAINING RING R-32 1
76 060-01299-50 BALL BEARING 6201DD/6201 2RU,RBC261 1
77 961052-5 RETAINING RING S-12 1
78 450569-8 SPACER, EM2650LH 1
79 624-15004-01 PIPE DAMPER 1, EM4251 1
80 624-15005-01 PIPE DAMPER 2, EM4251 1
81 624-15006-01 PIPE BRACKET 1, EM4251 1
82 624-15007-01 PIPE BRACKET 2, EM4251 1
83 922211-6 HEX. SOCKET HAD BOLT M5X12 1
84 922226-3 H. S. H. BOLT M5X18 2
85 521-90020-00 STAND SET, RBC230 1
86 014-00594-80 SCREW M5X14, EH561 2
87 592-20030-00 CRANKSHAFT ASS'Y, EM4251 1
88 044-01299-60 OIL SEAL (L), EM4251 1
89 044-01099-70 OIL SEAL (S), EM4251 1
90 542-15005-00 CLIP, EM4251 1
91 592-25009-00 PISTON, EM4251 1
92 592-20040-00 PISTON RING SET, EM4251 1
93 056-50899-70 CLIP, RST250 2
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 14 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
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.
94 257781-9 PISTON PIN, EM2650LH 1
95 424200-2 SPACER, EM2650LH 2
96 592-35000-01 CAM LIFTER, EM4251 2
97 593-30030-00 CAM GEAR ASSEMBLY, EM4250 1
98 592-35005-01 CAM GEAR SHAFT, EM4251 1
99 592-35006-00 CAM LIFTER SHAFT, EM4251 1
100 592-35007-00 PUSH ROD, EM4251 2
101 593-30020-00 ROCKER ARM ASS'Y, BHX2500 2
102 256200-2 PIN 5 1
103 592-35012-00 VALVE SPRING, EM4251 2
104 592-35013-00 SPRING RETAINER, EM4251 2
105 592-35014-00 EXHAUST VALVE, EM4251 1
106 592-35015-00 INTAKE VALVE, EM4251 1
107 592-50010-02 STARTER COVER ASS'Y, EM4251 1
108 451937-8 REEL, EM2650LH 1
109 266585-8 TAPPING SCREW 5X12 1
110 232258-5 SPIRAL SPRING, EM2650LH 1
111 451938-6 COLLAR, EM2650LH 1
112 325923-4 SWING ARM, EM2650LH 1
113 592-50010-50 STARTER ROPE, EM4251 1
114 424319-7 STARTER KNOB, EM2650LH 1
115 168483-1 PULLEY, EM2650LH 1
116 004-36042-50 SCREW ASS'Y M4X25, RBC201 2
117 023-00499-40 SPACER, EM4251 2
118 592-95008-00 TANK GUARD, EM4251 1
119 004-36051-00 SCREW ASSEMBLY, EH450 2
120 624-95086-00 MODEL LABEL, EM4250CA 1
121 592-60090-00 CARBURETOR, EM4250 1
122 140437-0 PUMP BODY, EM2650LH 1
123 140438-8 AIR PURGE BODY, EM2650LH 1
124 346270-0 PRIMER PUMP COVER, EM2650LH 1
125 424314-7 PRIMER PUMP, EM2650LH 1
126 592-60080-10 METERING DIAPHRAGM, EM4251 1
127 442154-1 METERING DIAPHRAGM GASKET, EM2650L
H
1
128 168575-6 PUMP DIAPHRAGM, EM2650LH 1
129 442155-9 PUMP GASKET, EM2650LH 1
130 519-60020-20 JET, RBC201 1
131 213538-8 O RING 2, EM2650LH 1
132 257964-1 STOP RING E-3, EM2650LH 1
133 325922-6 SWIVEL, EM2650LH 1
134 592-60020-10 THROTTLE VALVE ASS'Y, EM4250 1
135 266581-6 PAN HEAD SCREW M3X8 2
136 520-60081-10 PLUG, RBC230 1
137 266582-4 TAPPING SCREW 3X24 4
138 234183-6 CONICAL COMPRESSION SPRING 5-9 1
139 413140-9 WASHER, EM2650LH 1
140 352010-6 INLET SCREEN 1
Y05305 141 592-30160-00 INSULATOR COMPLETE 1 April 2008 production
141 592-30050-02 INSULATOR, EM4251 1
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 15 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
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.
142 002-17050-00 NUT M5, EW110R 2
143 002-27060-00 NUT, G3510R 1
144 002-27060-00 NUT, G3510R 1
Y05305 145 592-35047-00 INSULATOR GASKET, EM4251 1
145 592-35018-01 INSULATOR GASKET, EM4251 1
146 592-35040-00 CARBURETOR GASKET, EM4250 1
147 592-35020-00 CARBURETOR INSULATOR, EM4251 1
Y05305 148 011-90598-70 SOCKET HEAD BOLT, RBC230 2
148 004-36051-80 SCREW M5X18 2
149 014-90699-72 ADJUST SCREW M6X16, EM4251 1
150 524-60041-50 CAP, EM4251 1
151 525-95003-00 CAP , EM4250 1
152 592-15009-00 BREATHER PIPE, EM4251 1
153 593-30010-00 CLEANER PLATE ASSY, EM4250 1
154 593-30050-00 AIR CLEANER PLATE CPL, EM4250 1
155 531-65007-01 CHECK VALVE, EM4251 1
156 424316-3 CHECK VALVE 1
157 592-35025-00 CHECK VALVE PLATE, EM4251 1
158 593-35016-00 SEPARATOR PLATE,MS2514 1
159 592-35022-00 CHOKE LEVER, EM4251 1
160 593-35012-00 AIR CLEANER ELEMENT,EM4250 1
161 024-01399-70 O RING P14, EM4251 1
162 213540-1 O RING 15, EM2650LH 1
163 592-35023-01 CHOKE PLATE, EM4251 1
164 592-35026-00 PLATE, EM4251 1
165 021-30699-90 GASKET, RBC230 1
166 593-35008-00 AIR CLEANER COVER,EM4250 1
167 592-35030-01 PIPE, EM4251 1
168 014-00594-80 SCREW M5X14, EH561 1
169 592-35031-00 SCREW M5X68(W,SW SUS),EM4251 2
170 345918-1 HOSE CLAMP 1
171 592-30010-00 EXHAUST MUFFLER, EM4251 1
172 592-35016-01 MUFFLER GASKET, EM4251 1
173 592-35034-00 MUFFLER COVER, EM4251 1
174 011-90595-20 SOCKET HEAD BOLT M5X40, RBC201 2
175 014-00599-62 SCREW, EW110R 1
176 592-65024-00 FUEL TANK, EM4251CA 1 EM4250CA
176 592-65004-00 FUEL TANK, EM4251 1 EM4250
177 592-60030-00 TUBE, EM4251 1
178 523-65039-00 FILTER, RBL500 1
179 056-10599-90 HOSE CLAMP, EM4251 1
180 592-60120-00 FUEL TANK CAP, EM4251 1
181 525-60670-00 STRAP, RBC2510 1
182 810455-9 CAUTION PLATE 1
183 503-65002-00 PLATE, RBC230 1
184 503-65003-00 PLATE RBC230 1
185 519-65003-02 DAMPER, EH450 1
186 592-70120-11 IGNITION COIL, BHX2500 1
Y05352 187 592-70010-21 FLYWHEEL 1
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 16 of 17
PB_12-2011_rev 5

PARTS BREAKDOWN
EM4251
1 of 16
06/10/2010
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.
187 592-70010-20 FLYWHEEL, EM4251 1
188 592-75001-00 PLUG CAP, EM4251 1
189 065-40099-31 PLUG CAP SPRING,RBC221 1
190 592-70030-00 WIRE CPL.,EM4251 1
191 525-70180-01 WIRE COMPLETE, RBC201 1
192 525-75003-00 GROMMET, EH561 1
193 001-13061-60 BOLT ASS'Y, RBL500 1
194 003-12060-00 WASHER, G2400R 1
Y05655 195 004-37042-00 SCREW ASS'Y M4X20, BHX2500 2
195 014-00499-20 SCREW M4X20, RST250 2
196 592-85000-00 CLUTCH SHOE, EM4251 2
197 592-85001-00 SPRING, EM4251 1
198 592-85002-00 CLUTCH BOLT, EM4251 2
199 267812-6 WASHER 6 2
200 592-55008-00 CYLINDER COVER, EM4251 1
201 004-36051-00 SCREW ASSEMBLY, EH450 2
202 004-36041-60 SCREW M4X16(W,SW),EM4251 2
203 592-75000-00 PLUG COVER, EM4251 1
204 056-60599-80 CLAMP, RBC201 1
205 592-95010-01 TRADE MARK LABEL, EM4250 1
206 625-85082-00 PROTECTOR CLAMP, RBC2510 1
207 001-17063-00 BOLT M6X30, EM4251 2
208 625-80280-02 PROTECTOR ASSY, EM4250 1
208 625-80420-05 PROTECTOR CPL., EM4250 1
209 592-30080-11 SPARK ARRESTER, EM4251 1
210 592-35039-00 PIPE, EM4250 1
211 424201-0 CHECK VALVE 2
Y05305 212 011-90597-80 S.H. BOLT M5X12, RBC230 1
212 004-36051-00 SCREW ASSEMBLY 1
213 592-35035-00 SEPARATOR GASKET, EM4251 1
214 593-35009-00 AIR CLEANER ELEMENT,EM4250 1
215 B-14118 9" STAR BLADE 4T, RBC310 1
215 B-01878 9 STAR BLADE 4T, RBC310 1
216 123143-2 BAND ASSEMBLY 1
217 624-90000-00 TOOL SET 1
Y05305 218 592-35046-00 INTAKE PIPE 1
Y05305 219 213078-6 O RING 10, BHX2500 1
220 072-21046-00 OIL BOTTLE 1
220 072-21050-00 OIL BOTTLE, EM4251 1
PARTS BREAKDOWN
EM4250
EM4250CA
rev 5_12/05/2011
Page 17 of 17
PB_12-2011_rev 5