Maintenance Schedule - Briggs & Stratton 405700 Operator Owner's Manual

Maintenance
(see figs.
Also, see Maintenance Schedule. Follow the hourly or
calendar intervals, whichever occur first. More frequent service is
required when operating in adverse conditions.
See any Authorized Briggs & Stratton Dealer for correct
replacement parts (see figs. )
C D
To prevent accidental starting, remove spark plug
Ê
wire and ground it and disconnect battery at
negative terminal before servicing.
Oil service (see fig. )
Check oil level regularly.
Be sure correct oil level is maintained. Check every 8 hours or
daily, before starting engine. See oil filling procedure, Oil
Recommendations.
Change oil.
Change oil after first 8 hours of operation. Change oil while
engine is warm. Refill with new oil of recommended SAE

viscosity grade. (see fig. )
Ë
Change oil filter
Replace oil filter after every 100 hours of operation or every
season, whichever occurs first. Before installing new filter,
lightly oil filter gasket with fresh, clean engine oil. Screw filter
on by hand until gasket contacts oil filter adapter. Tighten 1/2 to
3/4 turn more. Start and run engine at IDLE to check for oil
leaks. Stop engine. Recheck oil level and add oil if required.
Oil pressure
If oil pressure drops below 4 6 psi (.2 .4 kg/cm
pressure switch (if engine is equipped) will either activate a
warning device or stop the engine. Check oil level with dipstick.
If oil level is between ADD and FULL mark on dipstick, do not
try to restart engine. Contact an Authorized Briggs & Stratton
Service Dealer. Do not operate engine until oil pressure is
corrected.
If oil level is below ADD mark on dipstick, add oil to bring level to
FULL mark. Restart engine and check oil pressure. If pressure is
normal, continue to operate engine.
Note: Oil pressure gauge, if engine is equipped, is supplied
by manufacturer of equipment.
Air cleaner, dual element (see fig.
Ë Ì
1. Remove knobs and cover
Í
2. Lift out cartridge and foam pre cleaner
Replace pre cleaner or cartridge if very dirty or damaged.
To service pre cleaner, wash in liquid detergent and water.
Squeeze dry in a clean cloth. Saturate in engine oil. Squeeze in
clean, absorbent cloth to remove excess oil.
To service cartridge, clean by tapping gently on a flat surface.
Do not use petroleum solvents, e.g., kerosene, which will
cause cartridge to deteriorate. Do not use pressurized air,
which can damage cartridge. Do not oil cartridge.
3. Reinstall pre cleaner (mesh side up) and cartridge.
4. Replace cover and knobs.
Maintenance Cont'd
)
Spark plug service (see fig.
Use only Briggs & Stratton Spark Tester
Spark plug gap
Replace spark plugs every season. Spark plug wrench is
available from any Authorized Briggs & Stratton Service
Dealer.
Keep engine clean (see fig.
Periodically remove grass/chaff buildup from engine. Do not
spray engine with water because water could contaminate
fuel. Use a brush or compressed air.
If muffler is equipped with spark arrester screen, remove spark
arrester screen for cleaning and inspection every 50 hours or
every season. Replace if damaged.
Grass or chaff may clog engine's air cooling system, especially
after prolonged service cutting tall, dry grass. Every 100 hours or
every season remove rotating screen, air cleaner cover and
blower housing
prevent overheating and engine damage. To prevent debris
from entering carburetor, it is important to cover the carburetor
2
), an oil
Ð
air intake
cleaning cooling system.
Check valve clearance (intake and exhaust .10 .15mm)

Maintenance Schedule

Follow the hourly or calendar intervals, whichever
occur first. More frequent service is required when
operating in adverse conditions noted below.
First 8 Hours
D Change oil
Every 8 hours or daily
)
D Check oil level
.
D Clean around muffler, linkage and springs
Î
.
Every 25 hours or every season
D Change oil if operating under heavy load or high
ambient temperature
D Service air cleaner pre cleaner*
Every 50 hours or every season
D Change oil
D Clean and inspect spark arrester, if equipped
Every 100 hours or every season
D Service air cleaner cartridge*
D Replace oil filter, if equipped
D Clean cooling system*
Every season
D Replace spark plugs
D Replace in line fuel filter
D Check valve clearance
* Clean more often under dusty conditions,or when
airborne debris is present or after prolonged opera
tion cutting tall, dry grass.
)
Ë
, to check for spark.
Ì
should be .76 mm or 0.030 in.
)
Chaff/debris around exhaust manifold/muffler could
cause a fire. Inspect and clean around muffler
before every use. Keep linkage, springs and
Í
controls free of debris.
Î
Replace in line fuel filter every season. Drain
fuel tank or close fuel shut off valve before
replacing fuel filter.
Ï
to clean internal cooling fins and surfaces to
located above and behind carburetor (inset) when
3
Storage
Engines stored over 30 days need to be protected or drained of
fuel to prevent gum from forming in fuel system or on essential
carburetor parts.
For engine protection, we recommend use of Briggs & Stratton
Gasoline Additive available from an Authorized Briggs &
B
Stratton Service Dealer. Mix Additive with fuel in fuel tank or
storage container. Run engine for a short time to circulate
Additive through carburetor. Engine and fuel can be stored up to
24 months.
Note: If Additive is not used or if engine is operating on gasoline
containing alcohol, e.g. gasohol, remove all fuel from tank and
run engine until it stops from lack of fuel.
1. Change oil. See Oil service. (see figs.
2. Remove spark plugs and pour about 30 ml (1 oz) of
engine oil into cylinders. Replace spark plugs and crank
slowly to distribute oil.
3. Clean grass/chaff from cylinders and cylinder head fins
and behind muffler.
4. Store in a clean and dry area, but NOT near a stove,
furnace or water heater which uses a pilot light or any
device that can create a spark.
Service
See an Authorized Briggs & Stratton Service Dealer. Each one
carries a stock of Genuine Briggs & Stratton Parts and is
equipped with special service tools. Trained mechanics
assure expert repair service on all Briggs & Stratton engines.
Only dealers advertising as Authorized Briggs & Stratton" are
required to meet Briggs & Stratton standards.
When you purchase equipment powered by a
Briggs & Stratton engine, you are assured of
highly skilled, reliable service at more than
30,000 Authorized Service Dealers world
wide, including more than 2,700 Master
Service Technicians. Look for these signs
wherever Briggs & Stratton service is offered.
You may locate your nearest Authorized
Briggs & Stratton Service Dealer in the
Yellow Pages" directory under Engines,

Gasoline" or Gasoline Engines," or Lawn
Mowers" or similar category. Or log on to our dealer locator
map on our web site www.briggsandstratton.com
Note: Walking fingers logo and Yellow Pages" are registered
trademarks in various jurisdictions.
An illustrated shop manual includes Theories of Operation,"
common specifications and detailed information covering
adjustment, tune up and repair of Briggs & Stratton V twin
cylinder OHV, 4 cycle engines. Order P/N 273521 from an
Authorized Briggs & Stratton Service Dealer.
Insist on Genuine Briggs & Stratton replacement parts with our
logo on the box and/or part. Non original parts may not perform
as well and may void your warranty.

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