Briggs & Stratton Vanguard 290000 Operator's Manual page 10

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 or remove the starter switch 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 not sure 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: 11
Check the gap (A, Figure 11) 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.
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.
10
Change Engine Oil
See Figure: 12, 13, 14, 15, 16
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 12) and
keep it away from the spark plug(s) (E).
2. Remove the dipstick (A, Figure 13, 14).
3. Remove the oil drain plug (F, Figure 15, 16). Drain the oil into an approved
container.
4. After the oil has drained, install and tighten the oil drain plug (F, Figure 15, 16).
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 (G, Figure 15, 16) and dispose of properly.
3. Before you install the new oil filter, lightly lubricate the oil filter gasket wil 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.
Add oil. See Add Oil section.
5.
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 13, 14) 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 13, 14) and wipe with a clean cloth.
Slowly pour oil into the engine oil fill (C, Figure 13, 14). Do not overfill. After
2.
adding oil, wait one minute and then check the oil level.
3. Install and tighten the dipstick (A, Figure 13, 14).
4. Remove the dipstick and check the oil level. Correct oil level is at the top of the full
indicator (B, Figure 13, 14) on the dipstick.
5. Reinstall and tighten the dipstick (A, Figure 13, 14).
6. Connect the spark plug wire(s) (D, Figure 12) to the spark plug(s) (E).
Service Air Filter
See Figure: 17, 18
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
• Never start and run the engine with the air cleaner assembly (if equipped) or the
air filter (if equipped) removed.
NOTICE Do not use pressurized air or solvents to clean the filter. Pressurized air
can damage the filter and solvents will dissolve the filter.
See the Maintenance Schedule for service requirements.
1. Models without Fuel Tank: Open the fastener(s) (A, Figure 17) and remove the
cover (B).
2. Models with Fuel Tank: Remove the fastener(s) (C, Figure 18) and the cover (B).
3. Remove the nut (D, Figure 17, 18) and retainer (E).
4. Remove the air filter (F, Figure 17, 18).
5. Remove the pre-cleaner (G, Figure 17, 18), if equipped, from the air filter (F).
6. To loosen debris, gently tap the air filter (F, Figure 17, 18) on a hard surface. If the
air filter is excessively dirty, replace with a new air filter.
7. Wash the pre-cleaner (G, Figure 17, 18) in liquid detergent and water. Allow the
pre-cleaner to air dry. Do not oil the pre-cleaner.
8. Assemble the dry pre-cleaner (G, Figure 17, 18), if equipped, to the air filter (F).
9. Install the air filter (F, Figure 17, 18) and secure with retainer (E) and nut (D).
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