Briggs & Stratton 12E300 User manual

Briggs & Stratton
Brand
Briggs & Stratton
Model
12E300
Category
Engine
Type
User manual

Briggs & Stratton 12E300 is a versatile and powerful engine that can be used for a variety of applications. With its durable construction and reliable performance, the 12E300 is a great choice for powering lawnmowers, generators, pressure washers, and other equipment.

The 12E300 features a 12.5 hp engine with a displacement of 300 cc. It has a cast-iron sleeve cylinder for durability and a long lifespan. The engine is also equipped with a recoil starter for easy starting.

The 12E300 is designed for easy maintenance and serviceability. It has a spin-on oil filter for quick and easy oil changes. The engine also has a large fuel tank for extended runtime.

Briggs & Stratton 12E300 is a versatile and powerful engine that can be used for a variety of applications. With its durable construction and reliable performance, the 12E300 is a great choice for powering lawnmowers, generators, pressure washers, and other equipment.

The 12E300 features a 12.5 hp engine with a displacement of 300 cc. It has a cast-iron sleeve cylinder for durability and a long lifespan. The engine is also equipped with a recoil starter for easy starting.

The 12E300 is designed for easy maintenance and serviceability. It has a spin-on oil filter for quick and easy oil changes. The engine also has a large fuel tank for extended runtime.

COPYRIGHT by BRIGGS & STRATTON CORPORATION
All rights reserved. No part of this material may be reproduced or transmitted,
in any form or by any means, electronic or mechanical, including photocopying,
recording or by any information storage and retrieval system, without permission
in writing from Briggs & Stratton Corporation.
PRINTED IN U.S.A.
FORM MS−5750−06/18/2008
REPLACES FORM MS−5750−06/24/2008
FILE IN SECT. 2 OF SERVICE MANUAL
12E300
Illustrated Parts List
Model Series
12E300
TYPE NUMBERS
0018 through 0275.
TABLE OF CONTENTS
Blower Housing/Shrouds 6. . . . . . . . . . . .
Camshaft 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Carburetor 4. . . . . . . . . . . . . . . . . . . . . . . . .
Controls 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Crankcase Cover 2. . . . . . . . . . . . . . . . . . .
Crankshaft 2. . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Cylinder Head 3. . . . . . . . . . . . . . . . . . . . . .
Electric Starter 5. . . . . . . . . . . . . . . . . . . . . .
Exhaust System 6. . . . . . . . . . . . . . . . . . . .
Flywheel 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel Supply 4. . . . . . . . . . . . . . . . . . . . . . . .
Governor Spring 5. . . . . . . . . . . . . . . . . . . .
Ignition 5. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Kits/Gaskets − Carburetor 4. . . . . . . . . . .
Kits/Gaskets − Engine 2. . . . . . . . . . . . . . .
Kits/Gaskets − Valves 3. . . . . . . . . . . . . . .
Lubrication 2. . . . . . . . . . . . . . . . . . . . . . . .
Piston Group 2. . . . . . . . . . . . . . . . . . . . . . .
Rewind Starter 5. . . . . . . . . . . . . . . . . . . . . .
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−2 Assemblies include all parts shown in frames. 06/18/2008
2
552
718
15
615
3
307
22
12
20
51
7
993
1022
883
883A
3
868
358 ENGINE GASKET SET
1019 LABEL KIT
1
616
2
306A
307A
27
27
30
32
32A
25
26
28
29
746
742
220
219
24
598
146
741
16
842
441
449
523
847
524
21
12
20
20A
18B
46A
20A
12
20
18
21
46
15B
998
1330 REPAIR MANUAL
1058 OPERATOR’S MANUAL
1319 WARNING LABEL
REQUIRED when replacing parts
with warning labels affixed.
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−3 Assemblies include all parts shown in frames. 06/18/2008
3
383
337
635A
36
238
40
35
238
40
868
51
7
993
1022
619
830
1029
13
1026
45
914
914A
1022
51
7
993
1022
868
1095 VALVE GASKET SET
155
34
192
1023
33
122
5
1034
914B
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−4 Assemblies include all parts shown in frames. 06/18/2008
4
365
51
95
692
104
137
276
186
633A
130
108
127A
633
276
276
51
118
122
117
975
133
134
97
109B
98 51
104
137
276
121 CARBURETOR OVERHAUL KIT
633
633A
127A
134
122
977 CARBURETOR GASKET SET
276
51
137
633
633A
957
190
972
127
127
125A
958
601
187
601
187A
601
187B
633
109C
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−5 Assemblies include all parts shown in frames. 06/18/2008
5
1119
334
851
333
1054
209
209A
505
562
227
632
990
892
356K
188
1230
621
427
773
271A
668
504
222
485
271
270
268
269
309A
813
493B
501
526
503
703
1148
493C
318A
474
474A
597
456
689
459
1210
1211
58
65A
55A
60B
930
608A
188
1230
621
427
773
271A
668
504
190
222G
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−6 Assemblies include all parts shown in frames. 06/18/2008
6
1252
472
493A
318
528
1224
11B
663
281A
731
976
1196A
604A
363
23
1070
1005
455
1036 EMISSIONS LABEL
65
304
37
78
305
613A
613
824
883
864
823
819
863
883A
1251
663
300
832A
836B
836C
1196
472B
332A
1005A
996
1011
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−7 Assemblies include all parts shown in frames. 06/18/2008
7
1 699510 Cylinder Assembly
2 399269 Kit−Bushing/Seal
(Magneto Side)
3 K299819S Seal−Oil
(Magneto Side)
5 699486 Head−Cylinder
7 K∅698210 Gasket−Cylinder Head
11B 695745 Tube−Breather
12 K699485 Gasket−Crankcase
13 699482 Screw
(Cylinder Head)
15 691686 Plug−Oil Drain
15B 695757 Plug−Oil Drain
16 699445 Crankshaft
−−−−−−− Note −−−−−
699454 Crankshaft
Used on Type No(s).
0275.
18 699804 Cover−Crankcase
18B 699677 Cover−Crankcase
20 K692550 Seal−Oil
(PTO Side)
20A K691952 Seal−Oil
(PTO Side)
(Auxiliary Drive)
21 281658S Cap−Oil Fill
22 699478 Screw
(Crankcase Cover/
Sump)
23 699516 Flywheel
24 222698S Key−Flywheel
25 791968 Piston Assembly
(Standard)
−−−−−−− Note −−−−−
791326 Piston
Assembly
(.020” Oversize)
26 791969 Ring Set
(Standard)
(Used After Code Date
05060600).
−−−−−−− Note −−−−−
499631 Ring Set
(Standard)
(Used Before Code
Date 05060700).
791324 Ring Set
(.020” Oversize)
(Used After Code Date
05060600).
692786 Ring Set
(.020” Oversize)
(Used Before Code
Date 05060700).
27 691866 Lock−Piston Pin
28 499423 Pin−Piston
29 690124 Rod−Connecting
30 791584 Dipper−Connecting
Rod
32 691664 Screw
(Connecting Rod)
32A 695759 Screw
(Connecting Rod)
33 499642 Valve−Exhaust
34 499641 Valve−Intake
35 691304 Spring−Valve
(Intake)
36 691304 Spring−Valve
(Exhaust)
37 699661 Guard−Flywheel
40 692194 Retainer−Valve
45 690977 Tappet−Valve
46 696813 Camshaft
46A 695285 Camshaft
51
KzD∅692555 Gasket−Intake
55A 696710 Housing−Rewind
Starter
58 693389 Rope−Starter
(Cut To Required
Length)
60B 699334 Grip−Starter Rope
65 699228 Screw
(Rewind Starter)
65A 699851 Screw
(Rewind Starter)
78 699205 Screw
(Flywheel Guard)
95 691636 Screw
(Throttle Valve)
97 690024 Shaft−Throttle
98 398185 Kit−Idle Speed
104 D691242 Pin−Float Hinge
108 695807 Valve−Choke
109B 695729 Shaft−Choke
109C 791957 Shaft−Choke
117 690048 Jet−Main
(Standard)
118 498977 Jet−Main
(High Altitude)
121 792006 Kit−Carburetor
Overhaul
122 D693749 Spacer−Carburetor
125A 794587 Carburetor
127 D694468 Plug−Welch
127A D691739 Plug−Welch
130 691181 Valve−Throttle
133 398187 Float−Carburetor
134
D398188 Kit−Needle/Seat
137 Dz693981 Gasket−Float Bowl
146 690979 Key−Timing
155 698214 Plate−Cylinder Head
186 692317 Connector−Hose
187 791766 Line−Fuel
(Cut to Required
Length)
187A 791867 Line−Fuel
(Molded)
187B 791874 Line−Fuel
(Molded)
188 699479 Screw
(Control Bracket)
190 699220 Screw
(Fuel Tank)
192 694543 Ball−Rocker Arm
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.
z Included in Carburetor Gasket Set−Ref. No. 977.
∅ Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−8 Assemblies include all parts shown in frames. 06/18/2008
8
209 692571 Spring−Governor
209A 691278 Spring−Governor
219 693578 Gear−Governor
220 691724 Washer
(Governor Gear)
222 699592 Bracket−Control
(Used Before Code
Date 06051500).
222G 793109 Bracket−Control
(Used After Code Date
06051400).
227 692573 Lever−Governor
Control
238 691300 Cap−Valve
268 691025 Control Wire Casing
(Cut to Required
Length)
269 691026 Control Wire
(Cut to Required
Length)
270 691027 Nut
(Control Wire Casing)
271 691028 Lever−Control
271A 698038 Lever−Control
276 D
z271716 Washer−Sealing
281A 793131 Panel−Control
(Used After Code Date
06051400).
−−−−−−− Note −−−−−
697550 Panel−Control
(Used Before Code
Date 06051500).
793122 Panel−Control
(Used After Code Date
06051400).
Used on Type No(s).
0275.
696684 Panel−Control
(Used Before Code
Date 06051500).
Used on Type No(s).
0275.
300 699512 Muffler
−−−−−−− Note −−−−−
699511 Muffler
Used on Type No(s).
0018, 0100, 0111,
0275.
304 699598 Housing−Blower
305 699480 Screw
(Blower Housing)
306A 695710 Shield−Cylinder
307 699483 Screw
(Cylinder Shield)
307A 699234 Screw
(Cylinder Shield)
309A 696818 Motor−Starter
−−−−−−− Note −−−−−
699786 Motor−Starter
Used on Type No(s).
0275.
318 690370 Screw
(Mounting Bracket)
318A 790537 Screw
(Mounting Bracket)
(Used After Code Date
04110800).
−−−−−−− Note −−−−−
699773 Screw
(Mounting Bracket)
(Used Before Code
Date 04110900).
332A 792723 Nut
(Flywheel)
333 695711 Armature−Magneto
334 699477 Screw
(Magneto Armature)
337 491055S Spark−Plug
356K 695731
Wire−Stop
358 791797 Set−Engine Gasket
363 19203 Puller−Flywheel
365 699484 Screw
(Carburetor)
383 19374S Wrench−Spark Plug
427 694255 Nut
(Control Bracket)
441 694262 Bracket−Oil Fill
449 699629 Screw
(Oil Fill Bracket)
455 692591 Cup−Flywheel
456 692299 Plate−Pawl Friction
459 281505S Pawl−Rachet
472 696691 Knob−Choke Shaft
472B 791958 Knob−Choke Shaft
474 694457 Alternator
−−−−−−− Note −−−−−
793640 Alternator
Used on Type No(s).
0275.
474A 698314 Alternator
485 695755 Knob−Control
493A 695744 Bracket−Mounting
493B 691177 Bracket−Mounting
493C 699048 Bracket−Mounting
501 698315 Regulator
503 699889 Strap−Starter
504 694254 Washer Set−Friction
505 691251 Nut
(Governor Control
Lever)
523 693618 Dipstick
−−−−−−− Note −−−−−
790546 Dipstick
Used on Type No(s).
0275.
524 281370 Seal−Dipstick Tube
526 793006
Screw
(Regulator)
528 793006 Hose−Primer
552 692346 Bushing−Governor
Crank
562 691119 Bolt
(Governor Control
Lever)
597 691696 Screw
(Pawl Friction Plate)
598 220624 Shim−End Play
601 791850 Clamp−Hose
604A 793134 Cover−Control
(Used After Code Date
06051400).
−−−−−−− Note −−−−−
695749 Cover−Control
(Used Before Code
Date 06051500).
608A 699335 Starter−Rewind
613 697812 Screw
(Muffler)
613A 699480 Screw
(Muffler)
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.
z Included in Carburetor Gasket Set−Ref. No. 977.
∅ Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION
12E300
Illustrations cover a range of engines. Parts shown without corresponding text may not be used on your specific engine.
5750−9 Assemblies include all parts shown in frames. 06/18/2008
9
615 692576 Retainer−Governor
Shaft
616 692547 Crank−Governor
619 699480 Screw
(Cylinder Head Plate)
621 692310 Switch−Stop
632 692653 Spring/Link−
Mechanical Governor
633 D
z693867 Seal−Choke/Throttle
Shaft
633A D
z691321 Seal−Choke/Throttle
Shaft
635A 692927 Boot−Sparkplug
663 699854 Screw
(Control Panel)
668 694257 Spacer
689 691855 Spring−Friction
692 690572 Spring−Detent
(Choke)
703 698320 Clip
718 690959 Pin−Locating
731 794590 Hood−Snow
741 695087 Gear−Timing
742 692564 Retainer−E Ring
746 790278 Gear−Idler
773 694258 Retainer
813 690635 Clamp
819 699233 Screw
(Muffler Bracket)
823 699209 Screw
(Muffler Adapter)
824 696017 Gasket−Heat Shield
830 694544 Stud
(Rocker Arm)
832A 699892 Guard−Muffler
−−−−−−− Note −−−−−
699313 Guard−Muffler
Used on Type No(s).
0275.
836B 699209 Screw
(Muffler Guard)
836C 699234 Screw
(Muffler Guard)
842 691031 Seal−O Ring
(Dipstick Tube)
847 693617 Dipstick/Tube
Assembly
−−−−−−− Note −−−−−
790545 Dipstick/Tube
Assembly
Used on Type No(s).
0275.
851 493880S Terminal−Spark Plug
863 699849 Bracket
−Muffler
864 699232 Adapter−Muffler
868 K∅692044 Seal−Valve
883 K692237 Gasket−Exhaust
883A K691893 Gasket−Exhaust
892 695747 Switch−Key
914 699480 Screw
(Rocker Cover)
(Bottom)
914A 692557 Screw
(Rocker Cover)
(Top)
914B 697551 Screw
(Rocker Cover)
(Center)
930 696709 Guard−Rewind
957 792647 Cap−Fuel Tank
958 698180 Valve−Fuel Shut Off
972 694260 Tank−Fuel
975 493640 Bowl−Float
976 790221 Primer−Carburetor
(Snap Fit)
−−−−−−− Note −−−−−
695750 Primer−
Carburetor
977 792007 Gasket Set−Carburetor
990 695756 Key−Set
993 K∅694088 Gasket−Cylinder Head
Plate
996 794687 Shield−Carburetor
998 696683 Pipe−Oil
1005 692592 Fan−Flywheel
1005A 794273 Fan
−Flywheel
1011 794544 Tube−Vent
1019 792211 Kit−Label
1022 K∅691890 Gasket−Rocker Cover
1023 499924 Cover−Rocker Arm
1026 790287 Rod−Push
1029 691230 Arm−Rocker
1034 691343 Guide−Push Rod
1036 Label−Emissions
(Available From An
Authorized Briggs &
Stratton Sevice
Dealer)
1054 280275 Tie−Cable
1058 277104 Operator’s Manual
1070 699201 Screw
(Flywheel Fan)
1095 791798 Gasket Set−Valve
1119 699772 Screw
(Alternator)
1148 698418 Screw
(Clip)
1196 696692 Screw
(Snow Hood)
(Carburetor)
1196A 696685 Screw
(Snow Hood)
(Muffler)
1210 498144 Pulley/Spring
Assembly
(Pulley)
1211 498144 Pulley/Spring
Assembly
(Spring)
1224 696824 Nut
(Carburetor Primer)
1230 699847 Screw
(Control Bracket)
1251 696699 Shield−Snow
1252 699234 Screw
(Snow Shield)
1319 794467 Label−Warning
1330 272147 Repair Manual
K Included in Engine Gasket Set−Ref. No.358.
D Included in Carburetor Overhaul Kit−Ref. No. 121.
z Included in Carburetor Gasket Set−Ref. No. 977.
∅ Included in Valve Gasket Set−Ref. No 1095.
REF. PART REF. PART REF. PART
NO. NO. DESCRIPTION NO. NO. DESCRIPTION NO. NO. DESCRIPTION
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Briggs & Stratton 12E300 User manual

Briggs & Stratton
Brand
Briggs & Stratton
Model
12E300
Category
Engine
Type
User manual

Briggs & Stratton 12E300 is a versatile and powerful engine that can be used for a variety of applications. With its durable construction and reliable performance, the 12E300 is a great choice for powering lawnmowers, generators, pressure washers, and other equipment.

The 12E300 features a 12.5 hp engine with a displacement of 300 cc. It has a cast-iron sleeve cylinder for durability and a long lifespan. The engine is also equipped with a recoil starter for easy starting.

The 12E300 is designed for easy maintenance and serviceability. It has a spin-on oil filter for quick and easy oil changes. The engine also has a large fuel tank for extended runtime.

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