Maintenance – Briggs & Stratton VANGUARD 582447 User Manual
Page 14
14
MAINTENANCE
FAN BELT
♦Check condition of fan belt.
♦Replace if damaged or worn.
To check for correct fan belt tension
When 10 kg (22 lbs.) of force is pressed at center of span
between fan and alternator, there should be 10 to 12 mm
(3/8 − 1/2 in.) of belt movement.
10 − 12 mm
(3/8 − 1/2 Inch)
BELT MOVEMENT
BELT
To adjust for correct tension
[1]. Loosen the 2 bolts (
A
and
B
).
[2]. Place a handle (or similar object) between the
alternator and engine cylinder block. Then move the
alternator towards the outside of the engine, until the
fan belt deflection conforms to the specified value.
Specified fan belt deflection:
10 to 12 mm / 10 kg (3/8 to 1/2 in. / 22 lbs.)
[3]. Temporarily tighten the 2 bolts (
A
and
B
) to fix the
alternator. Then remove the handle. Check fan belt
deflection. If it is within specifications, permanently
tighten the 2 bolts (
A
and
B
) as given below. If not,
repeat the above adjustment procedure.
Specified tightening torque:
A
: 195 kg-cm (170 in-lbs)
B
: 622 kg-cm (45 ft-lbs)
Check the fan belt deflection again.
10 − 12 mm
(3/8 − 1/2 Inch)
BELT MOVEMENT
HANDLE
BELT
B
A
SPARK ARRESTOR
♦If engine muffler is equipped with spark arrestor screen
assembly, remove for cleaning and inspection every 50
hours. Replace if damaged.