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Maintenance
Checking / Adding Fuel
To add fuel:
 1.  Remove the fuel cap.
 2.  Fill the tank to about 1-1/2” (3,81 cm) of the bottom 
of the filler neck.  This will allow for fuel expansion.
NOTE:  Do not overfill.  Refer to your engine manual 
for specific fuel recommendations. 
 3.  Install and hand tighten the fuel cap.
Fuel Filter
Carbuerated Models: The fuel filter is located in the 
fuel line between fuel tank and carburetor, near the 
fuel pump.  
Fuel Injected Models: The fuel filter is located in the 
fuel line between the fuel tank and the fuel pump.
If filter is dirty or clogged, replace as follows:
 1.  Disconnect the negative battery cable.
 2.  Place a container below the filter to catch spilled 
fuel.
 3.  Using pliers, open and slide hose clamps from fuel 
filter.
 4.  Remove hoses from filter.
 5.  Install new filter in proper flow direction in fuel line.
 6.  Secure with hose clamps.
 7.  Reconnect the negative battery cable when 
finished.
Change Oil & Filter
 1.  Warm engine by running for a few minutes.  (Refer 
to the engine operator’s manual for oil & filter 
replacement instructions.)
 2.  Place the oil drain hose (A, Figure 19) down 
through the hole (D) in the engine deck.
 3.  Place a small pan under the oil drain hose to catch 
the oil.  Using the appropriate tools, remove the 
cap (B) from the drain hose and drain the engine 
oil into the pan.
 4.  Replace the cap and wipe up any spilled oil.
 5.  Place an absorbent shop cloth under the engine oil 
filter.  Remove the engine oil filter and replace with 
a new one.
 6.  Remove the shop cloth and wipe up any spilled oil.
Engine Maintenance
Refer to engine owner’s manual for all engine 
maintenance procedures and recommendations. 
Inspect Muffler and Spark Arrester
Inspect the muffler for cracks, corrosion, or other 
damage Remove the spark arrester, if equipped, 
and inspect for damage or carbon blockage.  If 
replacement parts are required, make sure to use only 
original equipment replacement parts.
WARNING
Gasoline is highly flammable and must be 
handled with care. Never fill the tank when the 
engine is still hot from recent operation. Do 
not allow open flame, smoking or matches in 
the area. Avoid over-filling and wipe up any 
spills.
Do not remove fuel filter when engine is hot, 
as spilled gasoline may ignite. DO NOT spread 
hose clamps further than necessary. Ensure 
clamps grip hoses firmly over filter after 
installation.
Figure 19.  Engine Oil Drain (Briggs & Stratton 
Vanguard Engine Shown)
A. Oil Drain Hose
B. Cap
C. Oil Filter
D.  Hole for Drain Hose
NOTICE
Do not use gasoline containing METHANOL, 
gasohol containing more than 10% ethanol, 
gasoline additives, premium gasoline, or white 
gas because engine/fuel system damage could 
result.
C
B
A
D
WARNING
Replacement parts must be the same and 
installed in the same position as the orginal 
parts or fire could result.