272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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21 14 18 20 14 15 16 17 18 19 20 21 #2 CYLINDER HEAD #1 CYLINDER HEAD FLYWHEEL AND FAN ALTERNATOR ARMATURES BACKPLATE STARTER MOTOR BREATHER 15 17 27 24 25 16 19 28 23 22 22 23 24 25 26 27 28 CRANKCASE COVER OR SUMP CAMSHAFT AND GOVERNOR SPOOL #2 PISTON AND CONNECTING ROD ASSEMBLY #1 PISTON AND CONNECTING ROD ASSEMBLY CRANKSHAFT VALVES CYLINDER 26 67
ENGINE DISASSEMBLY Preparation • Drain oil. Remove and discard oil filter. • Disconnect choke and throttle control cables. • Remove engine from equipment. • Remove spark plugs. • Remove muffler and exhaust manifold. Remove Air Cleaner Assembly Vertical Crankshaft – Models 290700 – 380700 Fig. 2 Current style: (Round cartridge), Fig. 1. 1. Remove air cleaner cover, cartridge and precleaner. 2. Remove three screws (2) and breather deflector (3). 3. Remove two carburetor mounting nuts (1). 4. Remove air cleaner base and breather tube. Horizontal Crankshaft Models 290400 – 350400 Current style: (Round cartridge), Fig. 3. 1. Remove air cleaner cover, cartridge and precleaner. 2. Remove three screws (1) and breather deflector (2). 3. Remove two air cleaner base mounting screws (3). 4. Remove air cleaner base (4) and breather tube. Fig. 1 Early style: (Square cartridge), Fig. 2. 1. Remove air cleaner cover. 2. Remove four screws (6), lock washers (4) and flat washers (7). 3. Remove air cleaner base (5) and breather tube. Fig. 3 Early style: (Square cartridge), Fig. 4. 1. Remove air cleaner cover. 2. Remove four screws (2). 3. Remove air cleaner base (1) and breather tube. 68
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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.
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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 66 and 67: Section 3 Engine Disassembly Page A
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
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5. Remove intake and exhaust valves
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1. Measure valve stem diameter appr
Page 126 and 127:
Section 7 Starters Page GENERAL INF
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C-Ring Style Disassemble CAUTION
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4. Remove end cap and brush retaine
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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
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ÓÓ ÓÓ ÓÓÓÓÓÓÓÓ ÓÓÓÓ
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Section 8 Lubrication Systems Page
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CRANKCASE BREATHER SERVICE Models 2
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Models 540000, 610000 1. Remove two
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Section 9 Cylinders and Crankcase C
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NOTE: Recondition the cylinder bore
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Insert Bushing Driver #19349 into b
Page 156 and 157:
Section 10 Crankshafts and Camshaft
Page 158 and 159:
INSPECT CAMSHAFT Inspect gear teeth
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Section 11 Pistons, Rings and Conne
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Models 540000, 610000 • Top Compr
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Section 12 Engine Assembly Page ENG
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3. Align timing marks on camshaft a
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Fig. 13 2. Install valve covers wit
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Install Armatures 1. Assemble armat
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ÑÑ ÑÑ Fig. 29 a. Be sure lo
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4. Install breather deflector (4) a
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Final Engine Assembly • Install m
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Section 13 Engine Specifications Pa
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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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272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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