GB
6
STORAGE
Fuel can become stale when stored over 30 days. Stale fuel causes acid and
gum deposits to form in fuel system or on essential carburetor parts. Mix fuel
stabilizer with fuel in tank or storage container. Run engine for a short time to
circulate stabilizer through carburetor and engine. Engine and fuel can be stored
up to 24 months.
If fuel stabilizer is not used, you need to drain gasoline from equipment prior to
storage. Run engine until it stops from lack of fuel.
If FRESH START fuel cap with concentrated slow drip liquid cartridge is used,
there is no need to drain fuel, as long as cartridge contains stabilizer for seasonal
storage.
1. Change oil.
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. When engine is cooled from operating, Store in a clean dry area.
Do not store in same area as a stove, furnace, water heater , or other
appliance that uses a pilot light or has a device that can create a spark.
Engine fumes could ignite.
WARNING
SERVICE
Partial List of Genuine Briggs & Stratton Parts
Oil (48 oz.) 100028............................................
Oil filter (6 cm long) 492932......................................
Oil pump kit (uses electric drill to remove oil from engine quickly) 5056......
Fuel stabilizer (4.2 oz., 125 ml bottle) 5041..........................
Fuel filter (without fuel pump) 5018................................
Fuel filter (with fuel pump) 493629.................................
Air cleaner cartridge 394018.....................................
(all models except model 380000)
Air cleaner pre-cleaner 272490...................................
(all models except model 380000)
Air cleaner (cartridge and pre-cleaner kit) 5050.......................
(all models except model 380000)
Air cleaner cartridge (model 380000) 692519.........................
Air cleaner pre-cleaner (model 380000) 692520........................
Resistor spark plug 496018......................................
Long life platinum spark plug 5066................................
(used on most OHV engines)
Repair Manual 272144.........................................
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 worldwide, including more
than 6,000 Master Service Technicians. Look for these signs
wherever Briggs & Stratton service is offered.
You may find the nearest Authorized Service Dealer in our
dealer locator map at
ww.briggsandstratton.com
or by calling
1-800-233-3723.
ENGINE SPECIFICATIONS
Armature air gap 0.20-0.30 mm (0.008-0.012 in.).....................
Spark plug gap 0.76 mm (0.30 in.)...............................
V alve clearance wi th valve springs installed and piston 6 mm past top dead center
(check when engine is cold). See Repair Manual.
Intake 0.10-0.15 mm (0.004-0.006 in.).............................
Exhaust 0.10-0.15 mm (0.004-0.006 in.)............................
Note: Engine power will decrease 3-1/2% for each 1,000 feet (300 meters)
above sea level and 1% for each 10_ F(5.6_ C) above 77_ F(25_ C). It
will operate satisfactorily at an angle up to 15_. Refer to the equipment
operator manual for safe allowable operating limits on slopes.
MODEL SERIES 290000 & 300000
Bore 68 mm (2.68 in.)..........................................
Stroke 66 mm (2.60 in.)........................................
Displacement 480 cc (29.3 cu. in.).................................
MODEL SERIES 350000
Bore 72 mm (2.83 in.)..........................................
Stroke 70 mm (2.76 in.)........................................
Displacement 570 cc (34.7 cu. in.).................................
MODEL SERIES 380000
Bore 76 mm (2.97 in.)..........................................
Stroke 70 mm (2.76 in.)........................................
Displacement 627 cc (38.2 cu. in.).................................
TECHNICAL INFORMATION
POWER RATINGS
The power ratings for an individual engine model are initially developed by
starting with SAE (Society of Automotive Engineers) code J1940 (Small Engine
Power & Torque Rating Procedure) (Revision 2002-05). Given both the wide
array of products on which our engines are p laced, and the variety of
environmental issues applicable to operating the equipment, it may be that the
engine you have purchased will not develop the rated horsepower when used in
a piece of power equipment (actual “on-site” power). This difference is due to a
variety of factors including, but not limited to, the following: differences in altitude,
temperature, barometric pressure, humidity, fuel, engine lubrication, maximum
governed engine speed, individual engine to engine variability, design of the
particular piece of power equipment, the manner in which the engine is operated,
engine run-in to reduce friction and clean out of combustion chambers,
adjustments to the valves and carburetor, and other factors. The power ratings
may also be adjusted based on comparisons to other similar engines utilized in
similar applications, and will therefore not necessarily match the values derived
using the foregoing codes.
