Vanguard OHV V-Twin Repair Manual Page 13
- Page / 85
- Table of contents
- TROUBLESHOOTING
- BOOKMARKS
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Vanguard
TM
Twin-Cylinder OHV Liquid-Cooled Engine
Section 1 - General Information
Page 8
Normal coolant temperature gauge (if equipped) should
read between 175° and 195° F (80° and 90° C) when
engine is running.
If coolant temperature rises above 220° F (105° C), the
temperature light (if equipped) will illuminate. Idle engine
down for a while. Then stop engine. Once engine is
cooled, check coolant level, fan belt tension and clogged
radiator fins.
CLEANING DEBRIS
Daily or before every use, clean accumulated debris
from engine. Keep linkage, springs and controls clean.
Keep area around and behind muffler free of any
combustible debris.
Use the handle on the radiator screen to lift off for
cleaning. Clean screen thoroughly and clean radiator
fins.
Do not use water to clean engine parts. Water could
contaminate fuel system. Low pressure compressed air
may be used. Be careful not to damage radiator fins.
CAUTION: Engine parts should be kept clean
to reduce the risk of overheating and ignition of
accumulated debris
Fig. 3
ADJUST FAN BELT
• Check condition of fan belt.
• Replace if damaged or worn.
To Adjust Fan Belt Tension
1. Loosen bolt and bolt .
2. Fit torque wrench in the square hole located in the
bracket.
3. Apply 115 in. lbs. of torque in the direction of the
arrow.
4. While belt is being tensioned per step 3, torque
bolt to 125 in. lbs. (14 Nm). Torque bolt to
110 in. lbs. (12 Nm).
Fig. 4
AIR CLEANER MAINTENANCE
WARNING: Never operate engine with air
cleaner assembly or air cleaner cartridge
removed.
A properly serviced air cleaner protects internal parts of
the engine from dirt and dust particles in the air. If air
cleaner instructions are not carefully followed, dirt and
dust which should be collected in the cleaner will be
drawn into the engine. These particles are highly
abrasive and will cause the piston rings and cylinder
RADIATOR
CLEAN DEBRIS
CLEAN
HANDLE
DEBRIS
TORQUE
WRENCH
TORQUE
WRENCH
SQUARE
TORQUE
HOLE
FAN BELT
FAN BELT
- Vanguard Twin Cylinder 1
- OHV Liquid-Cooled Engines 1
- MODEL 473100 2
- COMMERCIAL POWER 2
- SAFETY INFORMATION 3
- Table Of Contents 6
- SECTION 1 GENERAL INFORMATION 8
- ENGINE IDENTIFICATION 9
- MAINTENANCE SCHEDULE 10
- FUEL AND OIL RECOMENDATIONS 11
- CHANGING OIL AND OIL FILTER 12
- CHANGE COOLANT 12
- CLEANING DEBRIS 13
- ADJUST FAN BELT 13
- AIR CLEANER MAINTENANCE 13
- REPLACE SPARK PLUG 14
- Vanguard 15
- SECTION 2 16
- TROUBLESHOOTING 16
- STARTER CURRENT DRAW TEST 17
- NO LOAD STARTER CURRENT DRAW 18
- CHECK CARBURETION 21
- FUEL SHUT-OFF SOLENOID 21
- CYLINDER BALANCE TEST 23
- CYLINDER LEAKDOWN TEST 24
- CHECKING COOLING SYSTEM 26
- CHECK OIL PRESSURE SWITCH 27
- CHECK OIL PRESSURE 28
- CHARGING SYSTEM 28
- BATTERY INFORMATION 30
- EQUIPMENT AFFECTING ENGINE 31
- OPERATION 31
- SECTION 3 32
- ENGINE DISASSEMBLY 32
- DISCONNECT FUEL LINES 33
- REMOVE FAN ASSEMBLY 33
- REMOVE CARBURETOR 34
- REMOVE STARTER 35
- REMOVE INTAKE MANIFOLD 36
- REMOVE ALTERNATOR 37
- REMOVE CYLINDER HEADS 37
- REMOVE CRANKCASE COVER 38
- REMOVE CAMSHAFT 39
- REMOVE PISTONS, RODS 39
- CRANKSHAFT 39
- SECTION 4 40
- ENGINE OVERHAUL 40
- Section 4 - Engine Overhaul 41
- BEARINGS 42
- DISASSEMBLY AND INSPECTION 43
- TOOL #19340 44
- NEW PISTON RING 44
- CRANKPIN BEARING 45
- PISTON PIN BEARING 45
- CYLINDER HEAD INSPECTION AND 46
- OIL PUMP 49
- REPLACING WATER PUMP SEAL 50
- REPLACING STARTER SOLENOID 51
- Fig. 102 52
- Fig. 103 52
- Fig. 104 52
- Fig. 105 53
- Fig. 106 53
- Fig. 107 53
- Fig. 108 53
- Fig. 109 54
- Fig. 110 54
- Fig. 111 54
- Fig. 112 54
- Fig. 113 55
- Fig. 114 55
- Fig. 115 55
- Fig. 116 55
- CARBURETOR INSPECTION AND 56
- Fig. 121 57
- Fig. 122 57
- Fig. 123 57
- Fig. 124 57
- Fig. 125 58
- Fig. 126 58
- Fig. 127 58
- Fig. 128 59
- Fig. 129 59
- Fig. 130 59
- Fig. 131 59
- Fig. 132 60
- Fig. 133 60
- Fig. 134 60
- Fig. 135 60
- SECTION 5 62
- ENGINE ASSEMBLY 62
- Fig. 140 63
- Fig. 141 63
- Fig. 142 63
- INSTALL CAMSHAFT 64
- INSTALL GOVERNOR GEAR 64
- INSTALL CRANKCASE COVER 64
- INSTALL STARTER 65
- INSTALL ALTERNATOR 65
- INSTALL ROCKER ARMS 66
- INSTALL FLYWHEEL 66
- INSTALL CYLINDER HEADS 66
- ADJUST VALVE CLEARANCE 67
- INSTALL ARMATURES 67
- INSTALL FAN ASSEMBLY 68
- INSTALL INTAKE MANIFOLD 69
- ELBOW ASSEMBLY 69
- Fig. 164 70
- Fig. 165 70
- Fig. 166 70
- Fig. 167 70
- ADJUST GOVERNOR 71
- INSTALL MUFFLER 71
- INSTALL RADIATOR 72
- INSTALL AIR CLEANER ASSEMBLY 72
- Fig. 176 73
- Fig. 177 73
- Fig. 178 73
- Fig. 179 73
- Fig. 180 74
- Section 5 - Engine Assembly 75
- SECTION 6 76
- FINAL ADJUSTMENTS AND 76
- SPECIFICATIONS 76
- CARBURETOR ADJUSTMENT 77
- Fig. 187 78
- Fig. 188 78
- Fig. 189 78
- Fig. 190 79
- Fig. 191 79
- Fig. 192 79
- Fig. 193 79
- MODEL 473100 SPECIFICATIONS 80
- ENGINE HARNESS 82
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