Briggs & Stratton 400000 Manual Del Operario página 9

Electronic Fuel Management System
The Electronic Fuel Management System monitors engine temperature, engine speed,
and battery voltage to adjust the choke during engine starting and warm up. There are no
adjustments on the system. If starting or operation problems occur, contact an Authorized
Briggs & Stratton Dealer.
NOTICE Make sure to follow the steps below or the Electronic Fuel Management
System could be damaged.
• Never start the engine if the battery cables are loose.
• Turn the key to the off position before disconnecting, removing and / or installing the
battery.
• Never use a battery charger to start the engine.
• Never disconnect the battery cables while the engine is running.
• When connecting the battery cables, first connect the positive (+) cable and then
connect the negative (-) cable to the battery.
• When charging the battery, turn the ignition switch to the off position and disconnect
the negative (-) battery cable from the battery.
• Do not spray water directly on the Electronic Control Unit.
Carburetor and Engine Speed
Never make adjustments to the carburetor or engine speed. The carburetor was set at the
factory to operate efficiently under most conditions. Do not tamper with the governor spring,
linkages, or other parts to change the engine speed. If any adjustments are required contact
a Briggs & Stratton Authorized Service Dealer for service.
NOTICE The equipment manufacturer specifies the maximum speed for the engine
as installed on the equipment. Do not exceed this speed. If you are unsure what the
equipment maximum speed is, or what the engine speed is set to from the factory,
contact a Briggs & Stratton Authorized Service Dealer for assistance. For safe and
proper operation of the equipment, the engine speed should be adjusted only by a
qualified service technician.
Service Spark Plug
See Figure: 6
Check the gap (A, Figure 6) with a wire gauge (B). If necessary, reset the gap. Install and
tighten the spark plug to the recommended torque. For gap setting or torque, see the
Specifications section.
Note: In some areas, local law requires using a resistor spark plug to suppress ignition
signals. If this engine was originally equipped with a resistor spark plug, use the same type
for replacement.
Service Exhaust System
WARNING
Running engines produce heat. Engine parts, especially muffler, become extremely
hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
• Allow muffler, engine cylinder and fins to cool before touching.
• Remove accumulated debris from muffler area and cylinder area.
• It is a violation of California Public Resource Code, Section 4442, to use or operate
the engine on any forest-covered, brush-covered, or grass-covered land unless the
exhaust system is equipped with a spark arrester, as defined in Section 4442,
maintained in effective working order. Other states or federal jurisdictions may have
similar laws. Contact the original equipment manufacturer, retailer, or dealer to obtain
a spark arrester designed for the exhaust system installed on this engine.
Exhaust system parts are installed by the equipment manufacturer. For specific maintenance
and replacement parts information, contact the equipment manufacturer.
Remove accumulated debris from muffler and cylinder area. Inspect the muffler for cracks,
corrosion, or other damage. Remove the deflector or the spark arrester, if equipped, and
inspect for damage or carbon blockage. If damage is found, install replacement parts before
operating.
WARNING
Replacement parts must be of the same design and installed in the same position as
the original parts. Other parts may not perform as well, may damage the unit, and may
result in injury.
Change Engine Oil
See Figure: 7, 8, 9, 10, 11
Used oil is a hazardous waste product and must be disposed of properly. Do not discard
with household waste. Check with your local authorities, service center, or dealer for safe
disposal/recycling facilities.
Remove Oil
1. With engine off but still warm, disconnect the spark plug wire(s) (D, Figure 7) and
keep it away from the spark plug(s) (E).
2. Remove the dipstick (A, Figure 8).
Oil Drain Plug, if equipped
1. Remove the oil drain plug (F, Figure 8). Drain the oil into an approved container.
Note: Any of the oil drain plugs (F, Figure 8) may be installed in the engine.
2. After the oil has drained, install and tighten the oil drain plug (F, Figure 8).
Quick Oil Drain, if equipped
1. Disconnect the quick oil drain hose (H, Figure 9) from the side of the engine.
2. Turn and remove the oil drain cap (I, Figure 9). Carefully lower the quick oil drain (H)
into an approved container (J).
3. After the oil has drained, install the quick oil drain cap (I, Figure 9). Attach the quick
oil drain hose (H) to the side of the engine.
Change Oil Filter, if equipped
Some models are equipped with an oil filter. For replacement intervals, see the
Maintenance Schedule.
1. Drain the oil from the engine. See Remove Oil section.
2. Remove the oil filter (K, Figure 10) and dispose of properly.
3. Before you install the new oil filter, lightly lubricate the oil filter gasket with fresh,
clean oil.
4. Install the oil filter by hand until the gasket contacts the oil filter adapter, then tighten
the oil filter 1/2 to 3/4 turns.
5. Add oil. See Add Oil section.
6. Start and run the engine. As the engine warms up, check for oil leaks.
7. Stop the engine and check the oil level. Correct oil level is at the top of the full indicator
(B, Figure 11) on the dipstick.
Add Oil
• Make sure the engine is level.
• Clean the oil fill area of any debris.
• See the Specifications section for oil capacity.
1. Remove the dipstick (A, Figure 11) and wipe with a clean cloth.
2. Slowly pour oil into the engine oil fill (C, Figure 11). Do not overfill. After adding oil,
wait one minute and then check the oil level.
Note: Do not add oil at the quick oil drain (H, Figure 9), if equipped.
3. Install and tighten the dipstick (A, Figure 11).
4. Remove the dipstick and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 11) on the dipstick.
5. Reinstall and tighten the dipstick (A, Figure 11).
6. Connect the spark plug wire(s) (D, Figure 7) to the spark plug(s) (E).
Service Air Filter
See Figure: 12, 13
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