Briggs & Stratton Vanguard Diesel 432447 Operator's Manual page 13

MAINTENANCE
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.
[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]. Activate primer pump until resistance is felt.
[6]. Start engine and check for leaks.
VALVE CLEARANCE
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.
Note: If engine is running normally, this check and adjustment
may be omitted.
[1]. Loosen adjusting lock nut.
[2]. Using a wrench to hold adjusting lock nut, adjust with
screwdriver. Determine clearance using a feeler gauge.
[3]. While holding screw driver in place, torque adjusting
lock nut.
Valve clearances (cold):
Int 0.2 mm (0.008 in.)
Exh 0.2 mm (0.008 in.)
Adjusting lock nut torque: 110 kg-cm (95 in. lbs.)
Check valve cover gasket for leakage. Replace if required.
Torque valve cover nuts to 55 kg-cm (48 in. lbs.)
WARNING
Drain/replace fuel filter
Piston Position
No. 1 piston at TDC, of compres No. 1 piston at TDC, of compres-
sion stroke
Rotate Crankshaft 360° clockwise Rotate Crankshaft 360° clockwise
WRENCH
Valve clearance adjustment
13
• Disconnect battery at
negative terminal.
PRIMING
PUMP
FUEL
FILTER
DRAIN
PLUG
SENSOR
WIRE
Cylinder
Int
Exh
Int
Exh
O-RING
1 2 3
D D
D D
D
D
SCREW
DRIVER
FEELER
GAUGE