Spark Plug Maintenance; Tune-Up Specifications - Briggs & Stratton Power Built 825 Serie Instrucciones De Mantenimiento & Operación

Rectangular Dual Element Air Cleaner
1. Loosen screw and tilt cover down. Remove pre-cleaner (if equipped) and
cartridge assembly from cover.
2. After servicing pre-cleaner and cartridge, place pre-cleaner, if equipped
(arrows up) over cartridge pleats (pre-cleaner lip will be at bottom of pleats).
3. Install pre-cleaner and cartridge assembly in cover.
4. Insert tabs on cover into slots
5. Tilt cover up and tighten screw securely.
Oval Dual Element Air Cleaner
1. Remove knob and cover. Lift air cleaner off stud.
2. After cleaning, reassemble pre-cleaner on cartridge. Push air cleaner firmly
Ï
down on stud to seat in base.
3. Push cover squarely onto base. Tighten knob securely.
Oil Foam Air Cleaner
To service foam element Ì, wash in liquid detergent and water. Squeeze dry in a
clean cloth. Saturate in engine oil. Squeeze in clean, absorbent cloth to remove
ALL EXCESS oil.
1. Loosen screw and tilt cover down. Remove bracket
cover.
2. Clean bracket, cover and base.
3. Install bracket and foam element in cover.
4. Insert tabs on cover into slots in bottom of base.
5. Tilt cover up and fasten securely with screw.
Fig. 9

SPARK PLUG MAINTENANCE

Clean/replace spark plug every 100 hours or every season, whichever occurs
first. Spark plug wrench is available from any Authorized Briggs & Stratton
Service Dealer.
Note: In some areas, local law requires using a resistor spark plug to suppress
ignition signals. If this engine was originally equipped with resistor spark plug, use
same type of spark plug for replacement.
Spark plug gap Ì should be 0.76 mm (0.030 in).
WARNING
DO NOT attempt to start engine with spark plug removed. Fuel can ignite
and cause a fire or explosion. If you need to check for spark, use only Briggs
& Stratton Spark Tester, to check for spark.
Fig. 9
KEEPING ENGINE CLEAN
Periodically remove grass and chaff build-up from engine. Clean finger guard. Do
not spray engine with water to clean because water could contaminate fuel.
Clean with a brush or compressed air.
If muffler is equipped with spark arrester screen Ë, remove spark arrester screen
for cleaning and inspection every 50 hours or every season. Replace if damaged.
To assure smooth operation, keep governor linkage, springs and controls Ê free
of debris.
Clean cooling system. Chaff or debris may clog engine's air cooling system,
especially after prolonged operation. Remove blower housing and clean as
shown Î.
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 Fuel Stabilizer.
Note: If stabilizer 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.
2. Remove spark plug and pour about 15 ml (1/2 oz) of engine oil into cylinder.
Replace spark plug and crank slowly to distribute oil.
3. Clean chaff and debris from cylinder and cylinder head fins, under finger guard
and behind muffler.
4. When removing the unit from storage, only use fresh gasoline. Perform
operation checks, see maintenance schedule, before starting engine.
Î
in bottom of base.
Í
and foam element from
Store in a clean, dry area. DO NOT store 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.
Need Assistance? Go to the website or call, 1-800-233-3723, (U.S.A. and
Canada) to hear a menu of pre-recorded messages offering engine maintenance
information.
Partial List of Genuine Briggs & Stratton Parts
Part
Oil (20 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil (48 oz.) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil pump kit (uses standard electric drill
to remove oil from engine quickly)
Fuel stabilizer (1 oz., 30 ml single use pouch)
Fuel filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flat air cleaner cartridge . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flat air cleaner pre-cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oval air cleaner cartridge (Model 11, 12)
Oval air cleaner pre-cleaner (Model 11, 12)
Oval air cleaner cartridge (Model 20, 21)
Oval air cleaner pre-cleaner (Model 20, 21)
Resistor spark plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Standard spark plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Long life platinum spark plug . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(used on most OHV engines)
Spark tester . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plug wrench . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
www.briggsandstratton.com
Use our web site at
or check the Yellow Pages™".
Walking fingers logo and Yellow Pages" are registered
trademarks in various jurisdictions.
™

TUNE-UP SPECIFICATIONS

Model 120000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 150000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 200000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Model 210000
Bore . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stroke . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Displacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plug gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 120000 / 150000
Armature air gap . . . . . . . . . . . . . . . . . . . . . . . . . . .
Spark plug gap . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Models 200000 / 210000
Armature air gap . . . . . . . . . . . . . . . . . . . . . . . . . . .
Intake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
** Valve clearance with valve springs installed and piston 1/4 in. (6 mm) past top dead
center (check when engine is cold). See Repair Manual P/N 272147.
4
WARNING
. . . . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . 992030 (5041)
491588 (5043)
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . . . . . . . .
to find a dealer nearest you,
2-11/16 in. (68 mm)
2-13/64 in. (56 mm)
12.48 cu. in. (206 cc)
75 mm (2.970 in.)
56 mm (2.200 in.)
249 cc (15.22 cu. in.)
3.120 in. (79.23 mm)
2.438 in. (61.67 mm)
18.64 cu. in. (305 cc)
3.300 in. (83.81 mm)
2.438 in. (61.67 mm)
. 20.85 cu. in. (342 cc)
0.030 in. (0.76 mm)
0.010 − 0.014 in. (0.25 − 0.36 mm)
0.030 in. (0.76 mm)
0.004 − 0.006 in. (0.10 − 0.15 mm)**
0.009 − 0.011 in. (0.23 − 0.28 mm)**
0.008 − 0.012 in. (0.20 − 0.30 mm)
0.004 − 0.006 in. (0.10 − 0.15 mm)**
0.004 − 0.006 in. (0.10 − 0.15 mm)**
Part No.
100005
100028
5056
694485
493537
690610
273356
692484
273930
802592E
492167E
5066
19368
19374