272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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Governor Test Dynamic Check Perform dynamic check exactly in order shown. 1. Start engine and check RPM. Top governed speed should be: a. 3600 RPM – 60 cycle applications. b. 3000 RPM – 50 cycle applications (YELLOW or RED loop removed). 2. Manually move throttle link to wide open throttle (WOT), Fig. 53. Engine should not exceed 4000 RPM (approximately). Static Check To determine whether a governor problem is being caused by the actuator or the control module, perform the following static check exactly in order shown. A pair of jumper wires and a known good 12 volt battery is required. 1. Disconnect RED (1) and GREEN (2) wires from control module to actuator. 2. Attach jumper wires from battery to RED and GREEN wires to actuator, Fig. 55. a. Attach 12 volt + (POSITIVE, 4) to RED wire. b. Attach 12 volt – (NEGATIVE, 3) to GREEN wire. Fig. 53 3. With engine running at top governed speed, attach one end of a jumper (2) wire to BLUE wire from control module (1). Attach the other end of the jumper wire (3) to a good ground, Fig. 54. After 4 – 6 seconds engine speed should return to idle (approximately 1750 RPM). Fig. 55 3. Actuator should move throttle lever to wide open position (5), Fig. 56. a. If actuator does not move it is defective. Replace. b. If actuator moves throttle to WOT, position, the module is defective. Replace. NOTE: Idle speed may vary according to equipment manufacturers specifications. 4. Remove jumper wire from ground. Engine should return to top governed speed. Replacing Actuator Fig. 56 Fig. 54 Removal 1. Disconnect RED and GREEN wires from control module to actuator. 59
2. Remove air cleaner assembly. 3. Disconnect governor link at carburetor. 4. Remove governor control bracket with actuator. 5. Disconnect governor link from actuator and remove throttle return spring. 6. Remove two screws, nuts and actuator from control bracket. Installation 1. Assemble actuator to governor control bracket (3), Fig. 57. Torque screws (4) and nuts (1) to 30 in. lbs. (3 Nm). NOTE: Hold screws (2) with a wrench when torquing nuts. Screws must NOT turn while torquing nuts. 2. Assemble governor link to actuator. Make sure link snaps into hole in actuator grommet. 3. Assemble throttle return spring through slot in governor control bracket with open end of spring facing out and through small hole in governor bracket. 4. Assemble governor control bracket assembly to engine. a. Torque four 8mm screws to 150 in. lbs. (17 Nm). b. Torque two 6mm screws to 70 in. lbs. (10 Nm). Fig. 57 5. Rotate actuator lever to position shown and connect governor link to carburetor. 6. Connect RED and GREEN wires from control module to actuator. 60
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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.
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 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 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
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NOTE: Use LOCTITE 222 on screw thr
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Section 5 Governor Page GENERAL INF
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3. Loosen governor lever nut (3). 4
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2. If necessary, remove the governo
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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
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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
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Pinion Gear Pinion gear replacement
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Fig. 40 Assemble Pinion Gear 1. Lub
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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
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Section 10 Crankshafts and Camshaft
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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
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Page 184 and 185:
Page 186 and 187:
Torque Values Description Air Clean
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Starter Motor Support Block A start
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Drill Size - Decimal Equivalent (In
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272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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