Briggs & Stratton 351700, 380700, 381700 warranty Engine Parts, General Information, Engine Model

ENGINE PARTS

3	9	10
		11

2

4

1

8

12

7

1. Air cleaner 6

2.Carburetor

3.Rewind starter (if equipped)

4.Blower housing

5.Oil filter (if equipped)

6.Spark plug wire

7.Oil drain plug

8.Oil fill/Dipstick

5 13

14

9.Rotating screen

10.Emission label

11.Engine Model Type Code

	xxxxxx	xxxx xx xxxxxxxx
12.	Fuel pump
13.	Exhaust manifold
14.	12V electric

GENERAL INFORMATION

ENGINE MODEL

This is a twin cylinder, overhead valve (OHV), air-cooled engine. It is a low emissions engine.

In the state of California, Model Series 350000 and 380000 engines are certified by the California Air Resources Board to meet emissions standards for 250 hours. Such certifica- tion does not grant the purchaser, owner or operator of this engine any additional warranties with respect to the performance or operational life of this engine. This engine is warranted solely according to the product and emissions warranties stated elsewhere in this manual.

MODEL SERIES 350000

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.83 in. (72 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.76 in. (70 mm)

Displacement . . . . . . . . . . . . . . . . . . . 34.7 cu. in. (570 cc)

MODEL SERIES 380000

Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.97 in. (75.5 mm)

Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2.76 in. (70 mm)

Displacement . . . . . . . . . . . . . . . . . . . 38.2 cu. in. (627 cc)

For practical operation, the horsepower loading should not exceed 85% of rated horsepower. Engine power will de- crease 3-1/2% for each 1,000 feet (300 meters) above sea level and 1% for each 10° F (5.6° C) above 77° F (25° C). Engine will operate satisfactorily at an angle up to 15° .

THE INTERNATIONAL SYMBOLS USED

ON THE ENGINE OR

IN THIS MANUAL INCLUDE:

Safety Alert	Read Owner’s
	Manual

On Off Oil Stop

Fuel Shutoff Choke Fuel

TUNE-UP SPECIFICATIONS

Armature air gap . . . 0.008 – 0.012 in. (0.20 – 0.30 mm)

Spark plug gap . . . . . . . . . . . . . . . . . . 0.030 in. (0.76 mm)

Valve clearance with valve springs installed and piston 1/4 in. (6 mm) past top dead center (check when engine is cold). See Repair Manual P/N 272144.

Intake . . . . . . . . . . . . . 0.004 – 0.006 in. (0.10 – 0.15 mm)

Exhaust . . . . . . . . . . . 0.004 – 0.006 in. (0.10 – 0.15 mm)

6