272144 Vanguard Twin Cylinder OHV BRIGGS & STRATTON.pdf

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Remove Flywheel Fig. 13 Flywheel Nut – Models 290000, 303000, 540000, 610000 1. Prevent the flywheel from turning with Flywheel Strap Wrench, #19433 (5) around outer rim of flywheel, Fig. 14. 2. Turn the flywheel nut COUNTERCLOCKWISE (arrow) with a 1/2” breaker bar (4) and a 30 mm socket to remove. Fig. 15 Flywheel – All Models EXCEPT Engines with PowerLink NOTE: See the special procedure at the end of this section for flywheel removal on engines with the PowerLink system. 1. Reinstall flywheel nut (2). Turn nut down flush with top of threads, Fig. 16. 2. Install Flywheel Puller #19203 (1). 3. Tighten puller screws equally until flywheel loosens. CAUTION AVOID INJURY! Fig. 14 Models 350000, 380000 1. Place Flywheel Holder #19321 (6) on fan retainer with lugs of flywheel holder engaging slots on the fan retainer, Fig. 15. • DO NOT strike the flywheel with a hard object or a metal tool. This could cause the flywheel to shatter in operation. • Use approved flywheel removal tools. NOTE: If engine is equipped with rewind starter hub remove starter hub screw first. Then remove flywheel nut. 2. Turn the flywheel nut COUNTERCLOCKWISE (arrow) with a 1/2” breaker bar (4) and a 30 mm socket to remove NOTE: Do not remove fan retainer and fan at this time. Fig. 16 71
Flywheel – Models WITH PowerLink CAUTION AVOID HAND AND/OR FINGER INJURY! • The flywheel magnets are VERY POWERFUL and can rapidly draw the flywheel to the engine. Exercise caution and use the proper tools when servicing the flywheel. Required Tools NOTE: The components of Flywheel Puller #19534, are shown in Fig. 17. This tool is RE- QUIRED to service the flywheel on engines with the PowerLink system. 1. Puller 2. <strong>Vanguard</strong> Pilot 3. Intek Pilot 4. Screws Fig. 18 5. Place the flywheel puller over the pilot. Back out the puller screw (5) until the flange on the puller is flush with the flange on the flywheel, Fig. 19. 6. Align the holes in the puller flange with the holes in the flywheel. Install the puller screws (4) and tighten until the screws are flush with the flange on the puller. 7. While holding the hex on the puller, tighten the puller screw until the flywheel loosens. 8. Continue tightening the puller screw until the flywheel is clear of the stator and can be lifted from the crankshaft. Leave the puller screw in this position. 9. Leave the puller attached to the flywheel, and place the flywheel on a clean work surface with the ring gear side down, until the flywheel is ready to be installed. CAUTION: Use extreme care when handling the flywheel. The alternator magnets are fragile and easily damaged. Fig. 17 1. Remove the ignition coils from the engine. 2. Remove the flywheel nut, fan retainer and fan from the flywheel. 3. Mark the flywheel (arrow) as shown to locate the flywheel keyway when reinstalling, Fig. 18. 4. Install the correct pilot over the crankshaft as shown. Fig. 19 72
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www.mymowerparts.com For Briggs & S
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IN THE INTEREST OF SAFETY DANGER FO
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WARNING Engines give off carbon mon
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BRIGGS & STRATTON MODEL NUMBERING S
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Oil Recommendations Oil has four pu
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CAUTION: DO NOT use petroleum solve
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ÌÌ ÌÌ Fig. 8 ÌÌ Fig.
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NOTE: Idle speed may vary according
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Remove deposits from combustion cha
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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 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 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
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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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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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