Briggs & Stratton Vanguard 470000 Series Operating & Maintenance Instructions page 7

ENGINE INFORMATION
MODEL SERIES 540000
1
2
3
4
5
6
7
1. Choke control
2. Breather/Breather tube
3. Spark plug (2 locations)
4. Engine Model label
Model
xxxxxx
5. Oil pressure sensor
6. Oil filter
7. Oil drain plug (2 locations)
8. Rotating screen
9. Carburetor cover (Removed)
GENERAL INFORMATION
This is a twin cylinder, overhead valve (OHV), air-cooled engine.
It is a low emissions engine.
In the state of California, Model Series 540000 engines are
certified by the California Air Resources Board to meet emissions
standards for 1000 hours. Such certification 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.
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . . . . . . . .
Note: For practical operation, the horsepower loading should not
exceed 85% of rated horsepower. Engine power will decrease
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 25°.
12
11
10
9
8
Type Code
xxxx xx xxxxxxxx
85.5 mm (3.36 in.)
78 mm (3.07 in.)
895 CC (54.6 cu. in.)
13
14
3
15
16
17
10. Carburetor
11. Mechanical fuel pump
12. Air cleaner
13. Oil Fill
14. Dipstick
15. Regulator/Rectifier
16. Starter solenoid
17. Starter
18. Exhaust system/Muffler
19. Throttle control (2 locations)
TUNE-UP SPECIFICATIONS
MODEL SERIES 540000
Armature air gap
Spark plug gap
Valve clearance with valve springs installed and piston 1/4 in. (6 mm)
past top dead center (check when engine is cold).
Intake . . . . . . . . . . . . . . . . . . .
Exhaust . . . . . . . . . . . . . . . . .
7
12
7
. . . . . . . . . 0.005 - 0.008 in. (0.13 - 0.20 mm)
. . . . . . . . . . . . . . . . . . . . . . . .
0.004 - 0.006 in. (0.10 - 0.15 mm)
0.004 - 0.006 in. (0.10 - 0.15 mm)
19
18
0.020 in. (0.51 mm)