Briggs & Stratton Vanguard Diesel 432447 Operating & Maintenance Instructions page 15

FUEL FILTER
If the fuel filter warning light comes on while engine is
running, stop engine and drain water from fuel filter.
To drain water:
[1]. Stop engine.
[2]. Place a drain pan under fuel filter and loosen drain
plug approximately 1 turn.
[3]. Water should drain. If necessary, operate priming
pump to drain water, but only until fuel flows from filter.
[4]. Tighten drain plug. Bleed air from fuel line.
[5]. Start engine. Ensure warning light goes out. Check for
leaks.
To replace fuel filter:
[1]. Disconnect sensor wire. Remove drain plug and
discard O-ring.
[2]. Remove fuel filter with filter wrench.
[3]. Screw new filter on by hand until gasket contacts
housing. Then tighten 1/3 turn more.
[4]. Install drain plug with new O-Ring. Connect sensor
wire.
[5]. Bleed air from fuel line. Start engine and check for
leaks.
VALVE CLEARANCE
Note: If engine is running normally, this check and adjustment
may be omitted.
With No. 1 piston at TDC of compression stroke, check valve
clearances for cylinders shown in chart below. Rotate crank-
shaft 360 clockwise to check remaining valves. Adjust in
same order, if required.
Valve clearances (cold):
Int
Exh
Adjusting lock nut torque: 95 in. lbs. (110 kg-cm).
Check valve cover gasket for leakage. Replace if required.
Torque valve cover nuts to 48 in. lbs. (55 kg-cm).
Piston Position
No. 1 piston at TDC, of compres- No. 1 iston at TDC, of com res
sion stroke
Rotate Crankshaft 360 clockwise Rotate Crankshaft 360 clockwise
0.008 in. (0.2 mm)
0.008 in. (0.2 mm)
Cylinder 1 2 3
D D
Int
D D
Exh
D
Int
D
Exh
Disconnect battery at negative terminal.
PRIMING
FUEL
FILTER
DRAIN
PLUG
SENSOR
Drain/replace fuel filter
WRENCH
Valve clearance adjustment
15
MAINTENANCE
WARNING
PUMP
WIRE
SCREW
DRIVER
O-RING
FEELER
GAUGE