272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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Section 3 Engine Disassembly Page AFTER DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 ENGINE DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Remove Air Cleaner Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Vertical Crankshaft – Models 290700–380700 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Horizontal Crankshaft – Models 290400–350400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68 Horizontal Crankshaft – Models 351400–380400 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Horizontal Crankshaft – Models 540000–610000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Remove Blower Housing and Fan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 69 Remove Carburetor and Intake Manifold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Vertical Crankshaft – All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Horizontal Crankshaft – All Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Remove Control Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Remove Armatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70 Remove Flywheel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Flywheel Nut – 290000, 300000, 540000, 610000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Flywheel Nut – 350000, 380000 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Flywheel Nut – All Models Except Powerlink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Flywheel Nut – Powerlink . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 72 Remove Breather and Starter Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Remove <strong>Cylinder</strong> Head . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Remove Oil Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 73 Remove Camshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Remove Pistons and Connecting Rods . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 Remove Crankshaft . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74 PARTS IDENTIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 66 65
PARTS IDENTIFICATION 6 7 1 5 3 1 2 3 4 5 6 7 AIR CLEANER BASE ROTATING SCREEN CARBURETOR COVER BLOWER HOUSING INTAKE MANIFOLD AND CARBURETOR CHOKE BRACKET AIR CLEANER SUPPORT 4 8 EXHAUST MANIFOLD 2 9 GOVERNOR LEVER 13 10 11 GOVERNOR CONTROL BRACKET VALLEY COVER 10 12 CYLINDER SHIELDS 11 13 VALVE COVERS 9 8 12 66
Page 1 and 2:
www.mymowerparts.com For Briggs & S
Page 3 and 4:
IN THE INTEREST OF SAFETY DANGER FO
Page 5 and 6:
WARNING Engines give off carbon mon
Page 7 and 8:
BRIGGS & STRATTON MODEL NUMBERING S
Page 9 and 10:
Oil Recommendations Oil has four pu
Page 11 and 12:
CAUTION: DO NOT use petroleum solve
Page 13 and 14:
ÌÌ ÌÌ Fig. 8 ÌÌ Fig.
Page 15 and 16: NOTE: Idle speed may vary according
Page 17 and 18: Remove deposits from combustion cha
Page 19 and 20: The crankcase capacity of Vanguard
Page 21 and 22: 5. Turn fixed speed adjustable cont
Page 23 and 24: Fig. 43 Fig. 45 Oil Cooler 7. With
Page 25 and 26: TUNE-UP PROCEDURE A “Tune-Up,”
Page 28 and 29: Section 2 Troubleshooting Page ELEC
Page 30 and 31: Fouled Plug or Dead Cylinder To tes
Page 32 and 33: Fig. 6 4. Ground the other spar
Page 34 and 35: Charging System Identification Tabl
Page 36 and 37: Testing Alternator Output When test
Page 38 and 39: A Fig. 14 Fig. 15 NOTE: Serv
Page 40 and 41: The battery is not used for the lig
Page 42 and 43: Output Test WHEN CHECKING ALTERNATO
Page 44 and 45: 7. If NO or LOW output is found, be
Page 46 and 47: POWERLINK SYSTEM Some V-Twin engine
Page 48 and 49: If the previous tests have not reve
Page 50 and 51: Installation 1. Before installing b
Page 52 and 53: 3. Attach BLACK test lead to a good
Page 54 and 55: Oil Pressure Test Switch Use Digit
Page 56 and 57: Wiring Diagram For Starter Panel &
Page 58 and 59: 6. Insert BLACK test lead into COM
Page 60 and 61: Governor Test Dynamic Check Perform
Page 62 and 63: GASEOUS FUELED ENGINES TROUBLESHOOT
Page 64 and 65: GASEOUS FUEL CARBURETOR ADJUSTMENT
Page 68 and 69: 21 14 18 20 14 15 16 17 18 19 20 21
Page 70 and 71: Î Î Fig. 4 Horizontal Cranksh
Page 72 and 73: Remove Flywheel Fig. 13 Flywheel Nu
Page 74 and 75: Remove Breather and Starter Motor 1
Page 76 and 77: Section 4 Fuel Systems and Carburet
Page 78 and 79: NOTE: Install the supports over the
Page 80 and 81: Fuel Filter Replace the inline fuel
Page 82 and 83: NOTE: The inspection in Step 2 is p
Page 84 and 85: Fig. 30 Fig. 32 ÎÎÎÎ ÔÔÔ Ô
Page 86 and 87: 21. Position bowl drain as shown. 2
Page 88 and 89: NOTE: The top and bottom edges of t
Page 90 and 91: NOTE: Use LOCTITE® 222 on screw th
Page 92 and 93: Fixed Main Jet Sizes Model 351700 L
Page 94 and 95: Inspect Carburetor Inspect all part
Page 96 and 97: 3. Remove float and inlet needle.
Page 98 and 99: Inspect Carburetor Inspect all part
Page 100 and 101: Check Throttle, Choke Shaft and Bod
Page 102 and 103: ÒÒ ÒÒ ÒÒ Fig. 103
Page 104 and 105: CAUTION: DO NOT press on float to a
Page 106 and 107: Remove Carburetor from Manifold Rem
Page 108 and 109: NOTE: Parts containing rubber, such
Page 110 and 111: Aisan Carburetor Model 610000 Gener
Page 112 and 113: NOTE: Use LOCTITE 222 on screw thr
Page 114 and 115: Section 5 Governor Page GENERAL INF
Page 116 and 117:
3. Loosen governor lever nut (3). 4
Page 118 and 119:
2. If necessary, remove the governo
Page 120 and 121:
Section 6 Cylinder Heads and Valves
Page 122 and 123:
5. Remove intake and exhaust valves
Page 124 and 125:
1. Measure valve stem diameter appr
Page 126 and 127:
Section 7 Starters Page GENERAL INF
Page 128 and 129:
C-Ring Style Disassemble CAUTION
Page 130 and 131:
4. Remove end cap and brush retaine
Page 132 and 133:
Brush retainers can be made from Pa
Page 134 and 135:
Pinion Gear Pinion gear replacement
Page 136 and 137:
Fig. 40 Assemble Pinion Gear 1. Lub
Page 138 and 139:
REWIND STARTER IDENTIFICATION Two r
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ÓÓÓ ÓÓÓ 5. Carefully lift
Page 142 and 143:
ÓÓ ÓÓ ÓÓÓÓÓÓÓÓ ÓÓÓÓ
Page 144 and 145:
Section 8 Lubrication Systems Page
Page 146 and 147:
CRANKCASE BREATHER SERVICE Models 2
Page 148 and 149:
Models 540000, 610000 1. Remove two
Page 150 and 151:
Section 9 Cylinders and Crankcase C
Page 152 and 153:
NOTE: Recondition the cylinder bore
Page 154 and 155:
Insert Bushing Driver #19349 into b
Page 156 and 157:
Section 10 Crankshafts and Camshaft
Page 158 and 159:
INSPECT CAMSHAFT Inspect gear teeth
Page 160 and 161:
Section 11 Pistons, Rings and Conne
Page 162 and 163:
Models 540000, 610000 • Top Compr
Page 164 and 165:
Section 12 Engine Assembly Page ENG
Page 166 and 167:
3. Align timing marks on camshaft a
Page 168 and 169:
Fig. 13 2. Install valve covers wit
Page 170 and 171:
Install Armatures 1. Assemble armat
Page 172 and 173:
ÑÑ ÑÑ Fig. 29 a. Be sure lo
Page 174 and 175:
4. Install breather deflector (4) a
Page 176 and 177:
Final Engine Assembly • Install m
Page 178 and 179:
Section 13 Engine Specifications Pa
Page 180 and 181:
Torque Values Description Torque Ai
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Torque Values Description Air Clean
Page 188 and 189:
Starter Motor Support Block A start
Page 190 and 191:
Drill Size - Decimal Equivalent (In
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