Briggs and Stratton 3 Cylinder Liquid Cooled Engine Specifications

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

General

Model

430447

580447

Type

Gasoline, 4-cycle, 3 cylinders, in-line, liquid

cooled

Valve mechanism

OHV, gear driven

Bore x stroke mm (in)

68 x 64

(2.680 x 2.520)

72 x 78

(2.834 x 3.070)

Piston displacement cc (cu in)

697 (42.5)

952 (58.1)

Firing order

1-2-3 (front, center, back)

Compression ratio

8.6: 1

Compression pressure (normal)

14.0 kg/cm2 (200 psi) @ 400 rpm

Engine at operating temperature – all spark plugs removed

Compression pressure (minimum)

11.0 kg/cm2 (155 psi) @ 400 rpm

Engine at operating temperature – all spark plugs removed

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)

Dry weight kg (lbs)

60 (132)

62 (137)

Cylinder Head

Type

Single piece casting

Material

Aluminum

Valve Specifications

Valve seat angle

Intake

30

Exhaust

30

Valve timing

Intake

Opens

10 BTDC

235

Closes

45 ABDC

Exhaust

Opens

45 BBDC

235

Closes

10 ATDC

Valve clearance (cold)

Intake mm (in)

.18 (.007 in)

Exhaust mm (in)

.18 (.007 in)

Cylinder Block & Camshaft

Cylinder block

Mono-block, three cylinders, cast iron

Camshaft

Carbon steel

Connecting Rod & Piston

Connecting rod

Carbon steel

Piston Pin Bearing

Machined – Piston pin, press fit

Crankpin Bearing

Material

Replaceable insert

Aluminum alloy

Piston

Heat resistant aluminum alloy

Piston ring

Compression ring

Two, chrome plated

Oil ring

One, combination type, chrome plated

Crankshaft & Crankshaft Bearing

Crankshaft

One piece cast iron

Crankshaft main

bearing

Material

Replaceable insert – Aluminum alloy

LUBRICATING SYSTEM

Lubricating Method

Pressure Lube

Oil Pump

Type

Trochoid

Drive

Gear drive

Oil Filter

Type

Full flow, paper

Oil Capacity

3.3 ltr (3.5 qt)

Oil Pump Relief Valve Opening Pressure

4.8 Bar (70 psi)

Lubrication Oil

API SE class or higher

COOLING SYSTEM

Cooling Method

Liquid cooled, forced circulation

Coolant Capacity (engine only)

Approximately 1.8 ltr (1.9 qt)

Cooling System Pressure

1.0 – 0.75 Bar (15 – 11 psi)

Pressure Cap Capacity

0.9 Bar (13 psi).

Water Pump

Type

Centrifugal

Drive

V-belt

Thermostat

Type

Wax pellet with bypass

Specification

82 C (180 F)

Cooling Fan

Drive

V-belt

AIR INTAKE AND EXHAUST SYSTEM

Intake Manifold

Material

Natural aspirating

Aluminum

Exhaust Manifold

Material

Sideward exhaust

Cast Iron

FUEL SYSTEM

Fuel

Gasoline 85 octane minimum

Fuel Pump

Type

Electric

Delivery Output – Minimum

350 cc/minute (12 fl. oz.)

Fuel Pump Pressure – Maximum

0.25 Bar (3.5 psi)

Carburetor

Make

Aisan Kogyo Co., Ltd {Nikki-optional}

Type

Single barrel, Float Feed

 

Model 430447

Model 580447

Carburetor

Bore diameter

24 mm

26 mm

Venturi diameter

17 mm

22 mm

Governor

Type

Mechanical

Electronic {Optional}

Idle Speed RPM

1500 +/– 100 RPM

(Idle mixture adjustment performed at 1200 RPM)

ELECTRICAL SYSTEM

Battery

Voltage

12V (negative ground)

Capacity

24 AH (28 AH cold)

Charging System

Alternator

28 Volt AC output – Minimum

Regulator/rectifier

14 Amp DC output with charge indicator circuit

Alternator {Optional}

40 Amp DC output – Internally regulated

Starter

Type

12 Volt – Solenoid activated Bendix drive

IGNITION SYSTEM

Voltage

12 v (negative ground)

Type

Transistorized Ignition

Ignition Timing

10□BTDC at idle/17.5 BTDC at 3600 RPM

Spark Plug

N.G.K.

BKR4E

Briggs & Stratton Daihatsu Part No. 491055

Champion

RC12YC

Spark Plug

Gap

0.76 mm (.030”)

Spark Plug

Thread

14 x 1.25 mm

Fastener Specifications

Description Wrench/Socket Size Torque

Alternator Adjuster Bracket

12 mm

19.0 Nm (170 in. lbs.)

Alternator (to bracket)

12 mm

19.0 Nm (170 in. lbs.)

Alternator Bracket (to block)

12 mm

19.0 Nm (170 in. lbs.)

Camshaft Gear

17 mm

41.0 Nm (30 ft. lbs.)

Camshaft Retainer

10 mm

8.0 Nm (70 in. lbs.)

Carburetor (to manifold)

10 mm

8.0 Nm (70 in. lbs.)

Coil Bracket

12 mm

20.0 Nm (180 in. lbs.)

Connector Rod Nuts

12 mm

36.0 Nm (320 in. lbs.)

Crankshaft Pulley

19 mm

88.0 Nm (65 ft. lbs.)

Cylinder Head Bolts (8mm diameter)

12 mm

34.0 Nm (25 ft. lbs.)

Cylinder Head Bolts (9mm diameter)

12 mm

35.0 Nm (26 ft. lbs.)

Exhaust Manifold

12 mm

19.0 Nm (170 in. lbs.)

Fan Pulley

10 mm

7.0 Nm (60 in. lbs.)

Flywheel

14 mm

47.0 Nm (35 ft. lbs.)

Governor Control Bracket

10 mm

8.0 Nm (70 in. lbs.)

Governor Nut

10 mm

10.0 Nm (90 in. lbs.)

Governor Paddle

Phillips

0.9 Nm (8 in. lbs.)

Idler Gear

12 mm

25.0 Nm (220 in. lbs.)

Intake Manifold

10 mm

7.0 Nm (60 in. lbs.)

Main Bearing Screws

14 mm

61.0 Nm (45 ft. lbs.)

Oil Drain Plug

14 mm

25.0 Nm (220 in. lbs.)

Oil Pan

10 mm

8.0 Nm (70 in. lbs.)

Oil Pressure Relief Valve

19 mm

34.0 Nm (25 ft. lbs.)

Oil Pump Gear

12 mm

19.0 Nm (170 in. lbs.)

Oil Pump Pickup

10 mm

8.0 Nm (70 in. lbs.)

Rear Seal Support

10 mm

6.0 Nm (50 in. lbs.)

Rocker Arm Assembly

12 mm Deep

19.0 Nm (170 in. lbs.)

Rocker Arm Adjustment

10 mm

11.0 Nm (95 in. lbs.)

Spark Plugs

16 mm Deep

21.0 Nm (170 in. lbs.)

Starter

14 mm

40.0 Nm (30 ft. lbs.)

Starter Bracket

14 mm

34.0 Nm (25 ft. lbs.)

Starter Solenoid

10 mm

8.0 Nm (70 in. lbs.)

Starter Thru Bolts

10 mm

8.0 Nm (70 in. lbs.)

Timing Gear Case

10 mm

8.0 Nm (70 in. lbs.)

Timing Gear Cover (3 different lengths)

10 mm

8.0 Nm (70 in. lbs.)

Valve Cover

10 mm

6.0 Nm (50 in. lbs.)

Water Pump

12 mm

19.0 Nm (170 in. lbs.)