These Briggs and Stratton engines are used in various equipment. Here are the most common specifications for 3 Cylinder Liquid Cooled engines. More guides and manuals on this website for Briggs and Stratton 3 cylinder liquid cooled engines including complete service manuals, parts list, operator manuals, and repair articles.
ENGINE SPECIFICATIONS
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General |
Model |
430447 |
580447 |
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Type |
Gasoline, 4-cycle, 3 cylinders, in-line, liquid cooled |
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Valve mechanism |
OHV, gear driven |
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Bore x stroke mm (in) |
68 x 64 (2.680 x 2.520) |
72 x 78 (2.834 x 3.070) |
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Piston displacement cc (cu in) |
697 (42.5) |
952 (58.1) |
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Firing order |
1-2-3 (front, center, back) |
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Compression ratio |
8.6: 1 |
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Compression pressure (normal) |
14.0 kg/cm2 (200 psi) @ 400 rpm Engine at operating temperature – all spark plugs removed |
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Compression pressure (minimum) |
11.0 kg/cm2 (155 psi) @ 400 rpm Engine at operating temperature – all spark plugs removed |
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Dimensions (L x W x H) mm (in) 435 x 395 x 492 435x395x502 (17.1×15.5×19.4) (17.1×15.5×19.7) |
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Dry weight kg (lbs) |
60 (132) |
62 (137) |
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Cylinder Head |
Type |
Single piece casting |
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Material |
Aluminum |
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Valve Specifications |
Valve seat angle |
Intake |
30 |
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Exhaust |
30 |
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Valve timing |
Intake |
Opens |
10 BTDC |
235 |
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Closes |
45 ABDC |
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Exhaust |
Opens |
45 BBDC |
235 |
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Closes |
10 ATDC |
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Valve clearance (cold) |
Intake mm (in) |
.18 (.007 in) |
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Exhaust mm (in) |
.18 (.007 in) |
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Cylinder Block & Camshaft |
Cylinder block |
Mono-block, three cylinders, cast iron |
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Camshaft |
Carbon steel |
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Connecting Rod & Piston |
Connecting rod |
Carbon steel |
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Piston Pin Bearing |
Machined – Piston pin, press fit |
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Crankpin Bearing |
Material |
Replaceable insert |
Aluminum alloy |
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Piston |
Heat resistant aluminum alloy |
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Piston ring |
Compression ring |
Two, chrome plated |
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Oil ring |
One, combination type, chrome plated |
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Crankshaft & Crankshaft Bearing |
Crankshaft |
One piece cast iron |
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Crankshaft main bearing |
Material |
Replaceable insert – Aluminum alloy |
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LUBRICATING SYSTEM
|
Lubricating Method |
Pressure Lube |
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Oil Pump |
Type |
Trochoid |
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Drive |
Gear drive |
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Oil Filter |
Type |
Full flow, paper |
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Oil Capacity |
3.3 ltr (3.5 qt) |
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Oil Pump Relief Valve Opening Pressure |
4.8 Bar (70 psi) |
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Lubrication Oil |
API SE class or higher |
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COOLING SYSTEM
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Cooling Method |
Liquid cooled, forced circulation |
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Coolant Capacity (engine only) |
Approximately 1.8 ltr (1.9 qt) |
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Cooling System Pressure |
1.0 – 0.75 Bar (15 – 11 psi) |
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Pressure Cap Capacity |
0.9 Bar (13 psi). |
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Water Pump |
Type |
Centrifugal |
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Drive |
V-belt |
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Thermostat |
Type |
Wax pellet with bypass |
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Specification |
82 C (180 F) |
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Cooling Fan |
Drive |
V-belt |
AIR INTAKE AND EXHAUST SYSTEM
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Intake Manifold |
Material |
Natural aspirating |
Aluminum |
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Exhaust Manifold |
Material |
Sideward exhaust |
Cast Iron |
FUEL SYSTEM
|
Fuel |
Gasoline 85 octane minimum |
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Fuel Pump |
Type |
Electric |
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Delivery Output – Minimum |
350 cc/minute (12 fl. oz.) |
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Fuel Pump Pressure – Maximum |
0.25 Bar (3.5 psi) |
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Carburetor |
Make |
Aisan Kogyo Co., Ltd {Nikki-optional} |
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Type |
Single barrel, Float Feed |
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Model 430447 |
Model 580447 |
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Carburetor |
Bore diameter |
24 mm |
26 mm |
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Venturi diameter |
17 mm |
22 mm |
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Governor |
Type |
Mechanical Electronic {Optional} |
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Idle Speed RPM |
1500 +/– 100 RPM (Idle mixture adjustment performed at 1200 RPM) |
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ELECTRICAL SYSTEM
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Battery |
Voltage |
12V (negative ground) |
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Capacity |
24 AH (28 AH cold) |
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Charging System |
Alternator |
28 Volt AC output – Minimum |
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Regulator/rectifier |
14 Amp DC output with charge indicator circuit |
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Alternator {Optional} |
40 Amp DC output – Internally regulated |
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Starter |
Type |
12 Volt – Solenoid activated Bendix drive |
IGNITION SYSTEM
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Voltage |
12 v (negative ground) |
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Type |
Transistorized Ignition |
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Ignition Timing |
10□BTDC at idle/17.5 BTDC at 3600 RPM |
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Spark Plug |
N.G.K. |
BKR4E |
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|
Briggs & Stratton Daihatsu Part No. 491055 |
Champion |
RC12YC |
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Spark Plug |
Gap |
0.76 mm (.030”) |
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Spark Plug |
Thread |
14 x 1.25 mm |
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Fastener Specifications
Description Wrench/Socket Size Torque
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Alternator Adjuster Bracket |
12 mm |
19.0 Nm (170 in. lbs.) |
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Alternator (to bracket) |
12 mm |
19.0 Nm (170 in. lbs.) |
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Alternator Bracket (to block) |
12 mm |
19.0 Nm (170 in. lbs.) |
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Camshaft Gear |
17 mm |
41.0 Nm (30 ft. lbs.) |
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Camshaft Retainer |
10 mm |
8.0 Nm (70 in. lbs.) |
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Carburetor (to manifold) |
10 mm |
8.0 Nm (70 in. lbs.) |
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Coil Bracket |
12 mm |
20.0 Nm (180 in. lbs.) |
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Connector Rod Nuts |
12 mm |
36.0 Nm (320 in. lbs.) |
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Crankshaft Pulley |
19 mm |
88.0 Nm (65 ft. lbs.) |
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Cylinder Head Bolts (8mm diameter) |
12 mm |
34.0 Nm (25 ft. lbs.) |
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Cylinder Head Bolts (9mm diameter) |
12 mm |
35.0 Nm (26 ft. lbs.) |
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Exhaust Manifold |
12 mm |
19.0 Nm (170 in. lbs.) |
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Fan Pulley |
10 mm |
7.0 Nm (60 in. lbs.) |
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Flywheel |
14 mm |
47.0 Nm (35 ft. lbs.) |
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Governor Control Bracket |
10 mm |
8.0 Nm (70 in. lbs.) |
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Governor Nut |
10 mm |
10.0 Nm (90 in. lbs.) |
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Governor Paddle |
Phillips |
0.9 Nm (8 in. lbs.) |
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Idler Gear |
12 mm |
25.0 Nm (220 in. lbs.) |
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Intake Manifold |
10 mm |
7.0 Nm (60 in. lbs.) |
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Main Bearing Screws |
14 mm |
61.0 Nm (45 ft. lbs.) |
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Oil Drain Plug |
14 mm |
25.0 Nm (220 in. lbs.) |
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Oil Pan |
10 mm |
8.0 Nm (70 in. lbs.) |
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Oil Pressure Relief Valve |
19 mm |
34.0 Nm (25 ft. lbs.) |
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Oil Pump Gear |
12 mm |
19.0 Nm (170 in. lbs.) |
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Oil Pump Pickup |
10 mm |
8.0 Nm (70 in. lbs.) |
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Rear Seal Support |
10 mm |
6.0 Nm (50 in. lbs.) |
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Rocker Arm Assembly |
12 mm Deep |
19.0 Nm (170 in. lbs.) |
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Rocker Arm Adjustment |
10 mm |
11.0 Nm (95 in. lbs.) |
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Spark Plugs |
16 mm Deep |
21.0 Nm (170 in. lbs.) |
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Starter |
14 mm |
40.0 Nm (30 ft. lbs.) |
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Starter Bracket |
14 mm |
34.0 Nm (25 ft. lbs.) |
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Starter Solenoid |
10 mm |
8.0 Nm (70 in. lbs.) |
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Starter Thru Bolts |
10 mm |
8.0 Nm (70 in. lbs.) |
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Timing Gear Case |
10 mm |
8.0 Nm (70 in. lbs.) |
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Timing Gear Cover (3 different lengths) |
10 mm |
8.0 Nm (70 in. lbs.) |
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Valve Cover |
10 mm |
6.0 Nm (50 in. lbs.) |
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Water Pump |
12 mm |
19.0 Nm (170 in. lbs.) |
