Briggs & Stratton 313700, 312700, 287700, 28Q700, 28N700 User Manual
...
Before starting this engine, read and understand
Operator/Owner Manual
this
. Failure to follow instructions
in this manual could result in serious injury or death.
28N700, 287700,
28P700, 28Q700, 28S700, 28U700,
310700, 311700, 312700, 313700
For future reference, write your
For future reference, write your
In the Interest of Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Oil & Fuel Recommendations 3. . . . . . . . . . . . . . . . . . . . . .
Starting & Stopping 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Adjustments 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Briggs & Stratton Corporation
Milwaukee, Wisconsin 53201
www.briggsandstratton.com
engine
engine
Model/T ype/Code here.
Date of Purchase here.
Table of Contents
Copyright 1998 by Briggs & Stratton Corporation
Model Type Code
Maintenance Schedule 8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Service, Storage & Specifications 9. . . . . . . . . . . . . . . . . .
Emission System Warranty 10. . . . . . . . . . . . . . . . . . . . . . .
About Engine Warranty 11. . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine Warranty 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FORM NO. 273683-7/98
PRINTED IN U.S.A.
Maintenance, replacement or repair of the emission control devices and systems may be performed by any nonroad engine repair establishment or individual. However, to obtain no charge repairs under the terms and provisions of the
Briggs & Stratton warranty statement, any service or emission control part repair or replacement must be performed by a
factory authorized dealer.
In the Interest of Safety
This safety alert symbol indicates that this message
involves personal safety. Words danger, warning
and caution indicate degree of hazard. Death,
personal injury and/or property damage may occur
unless instructions are followed carefully.
The Briggs & Stratton engine you bought with your equipment is made of the finest material in a state-of-the-art manufacturing
facility . Please understand that Briggs & Stratton sells engines to original equipment manufacturers. It also sells to others in the
distribution chain who may sell to the ultimate consumer, an equipment manufacturer , another distributor or a dealer . As a result,
Briggs & Stratton does not necessarily know the application on which the engine will be placed. For that reason, you should
carefully read and understand the operating instructions of the equipment on which your engine is placed before you operate it.
You should also understand that there are equipment applications for which Briggs & Stratton does not approve the use of its
engines. Briggs & Stratton engines are not to be used on vehicles with less than 4 wheels. They include motor bikes, aircraft
products and All T errain V ehicles. Moreover, Briggs & Stratton does not approve of its engines being used in competitive events .
F0R THA T REASON, BRIGGS & STRATTON ENGINES ARE NOT AUTHORIZED FOR ANY OF THESE APPLICATIONS. Failure to follow this warning could result in death, serious injury (including paralysis) or property damage.
DO NOT run engine in an enclosed area.
(Exhaust gases contain carbon monoxide, an
odorless and deadly poison.)
DO NOT remove fuel tank cap nor fill fuel tank while
engine is hot or running. DO NOT refuel indoors or in
an unventilated area. (Allow engine to cool 2 minutes before refueling.)
DO NOT place hands or feet near moving or rotating parts.
DO NOT store, spill, or use gasoline near an open flame, nor
near an appliance like a stove, furnace, or water heater that
uses a pilot light or can create a spark.
DO NOT refuel indoors or in an unventilated area.
DO NOT operate or tip engine/equipment at such a severe
angle that causes gasoline spillage.
DO NOT operate engine if gasoline is spilled or when smell of
gasoline is present or other explosive conditions exist. (Move
equipment away from spill and avoid any ignition until gasoline
has evaporated.)
DO NOT transport engine with fuel in tank or fuel shut-off
valve open.
DO NOT choke carburetor to stop engine, especially in an enclosed vehicle. (Whenever possible, gradually reduce engine
speed before stopping.)
DO NOT tamper with governor springs, links or other parts to
increase engine speed. (Run engine at speed set for equipment
manufacturer.)
✔ PULL starter cord slowly until resistance is felt. Then pull
cord rapidly to avoid kickback and prevent hand or arm injury.
✔ PREVENT ACCIDENTAL STARTING by removing spark
plug wire from spark plug when servicing engine or equipment. Disconnect negative wire from battery terminal if
equipped with electric starting system.
✔ REMOVE blower housing periodically and clean engine.
Keep cylinder fins and governor parts free of dirt, grass
and other debris which can affect engine speed.
✔ USE fresh gasoline. Stale fuel can gum carburetor and
cause leakage.
✔ CHECK fuel lines and fittings frequently for cracks or
International
Symbols
Safety Alert - Read
Owner’s Manual
DO NOT check for spark with spark plug removed. (Use an
approved tester.)
DO NOT crank engine with spark plug removed. (If engine is
flooded, place throttle in FAST and crank until engine starts.)
DO NOT strike flywheel with a hammer or hard object as this
may cause flywheel to shatter in operation. (T o remove flywheel,
use Briggs & Stratton approved tools only.)
DO NOT operate engine without a muffler . (Inspect periodically
and replace if worn or leaking. If engine is equipped with muffler deflector, inspect periodically and replace if necessary. Replacement parts must be same as on original equipment.)
DO NOT operate engine with an accumulation of grass,
leaves or other combustible material in muffler area.
DO NOT use this engine on any forest covered, brush covered, or grass covered unimproved land unless a spark arrester is installed on muffler . The spark arrester must be maintained in working order by the owner and/or operator. In the
State of California the above is required by law (Section 4442
of the California Public Resources Code). Other states may
have similar laws. Federal laws apply on federal lands.
DO NOT touch hot muffler , cylinder, or fins which can cause
burns.
DO NOT start engine with air cleaner or air cleaner cover re moved (or cover over carburetor air intake, if Sno/Gard engine).
DO NOT attempt to start engine with cutting blade loose or removed. (Blade must be tight, otherwise a kickback may occur.)
✔ Use only Genuine Briggs & Stratton Parts or their
On Off Stop
You are not ready to operate this engine if you
have not read and understood the following
safety items. Read this entire owner’s manual and
the operating instructions of the equipment this
engine powers.
leaks. Replace if necessary.
equivalent. The use of replacement parts which are
not of equivalent quality may damage the engine.
The engine exhaust from this product
contains chemicals known to the State
of California to cause cancer, birth
defects, or other reproductive harm.
Fuel
Shutoff
Fuel
Choke
In the USA and Canada, a 24 hour hot line, 1-800-233-3723, has a menu of pre-recorded messages offering you engine maintenance information.
2
Oil & Fuel Recommendations
Oil
This engine is shipped from Briggs & Stratton without oil.
Before starting engine, check oil level as shown below.
Change and add oil according to chart below. Do not over-fill.
Use a high quality detergent oil classified “For Service SF,
SG, SH,” such as Briggs & Stratton “warranty certified” SAE
30 oil, Part No. 100005. Use no special additives with recommended oils. Do not mix oil with gasoline.
SAE Viscosity Grades
**
*
20 40 60 80 100
-20 0
°F
°C -30
STAR TING TEMPERATURE RANGE ANTICIPATED BEFORE NEXT OIL CHANGE
* Air cooled engines run hotter than automotive engines. The use of
multi-viscosity oil such as (10W-30, etc.) in ambient temperatures
above 40° F (4°C) will result in higher than normal oil consumption.
If multi-viscosity oil is used, check the oil level more frequently to
prevent any possible engine damage due to lack of lubrication.
** Use of SAE 30 oil below 40° F (4° C) will result in hard starting
and possible engine damage due to inadequate lubrication.
-20 -10 0 10 20 30 40
32
Check oil level before starting engine.
Add oil as shown below.
Oil capacity is about 1-1/2 quarts (48 ounces or 1.4 liter).
Oil capacity is about 1-1/2 quarts (48 ounces or 1.4 liters) if
engine is not equipped
with oil filter.
Oil capacity is about 1-3/4 quarts (56 ounces or 1.7 liters) if
engine is equipped with oil filter.
After filling with or changing oil, start and run engine at idle for
30 seconds. Shut engine off. Wait 30 seconds and check oil
level. Add oil, if required, to bring level to Full mark on dipstick.
Fuel
Use clean, fresh, regular unleaded gasoline with a minimum
of 85 octane. Do not mix oil with gasoline. Fresh fuel prevents
gum from forming in fuel system or on essential carburetor
parts. Purchase fuel in quantity that can be used within 30
days. In countries other than the U.S.A., leaded gasoline may
be used if commercially available and unleaded is unavailable.
We recommend the use of Briggs & Stratton Gasoline Additive.
(See your Authorized Briggs & Stratton Service Dealer for
Part No. 5041 or the single-use pouch.) See storage instructions, on page 9.
Note: Some fuels, called oxygenated or reformulated
gasolines, are gasolines blended with alcohols or ethers.
Excessive amounts of these blends can damage the fuel
system or cause performance problems. Do not use gasoline
which contains Methanol. If any undesirable operating
symptoms occur, use gasoline with a lower percentage of
alcohol or ether.
Do not over-fill fuel tank.
Allow space for fuel expansion.
3
2
4
1. Oil drain
2. Oil fill/Dipstick
3. Rotating screen
4. Blower housing
5. Muffler
1
5
6
6. 12V electric starter
Place engine level.
Clean around oil fill.
Remove dipstick.
Wipe with clean cloth.
Tighten dipstick.
Remove & check.
11
7. Air cleaner
8. In-line fuel filter,
12
9
7
8
if equipped
9. Carburetor
10. Oil filter, if equipped
10
11. Spark plug wire
Oil level should
be at FULL
In the USA and Canada, a 24 hour hot line, 1-800-233-3723, has a menu of pre-recorded messages offering you engine maintenance information.
mark.
If oil is required, add
slowly. Recheck level.
Tighten dipstick be-
fore starting engine.
12. Engine Model Type Code
xxxxxx xxxx xx xxxxxxxx
3
Starting & Stopping
Choke operation/engine warm-up
This engine is a lo w emissions engine which operates differently
from previously built engines. It is designed for maximum
performance and life if operated with the choke fully open (in
RUN) and throttle fully open (in FAST). T o open the choke fully
requires an engine warm-up period of several seconds to
several minutes, depending on the temperature.
After starting engine, first open the choke (toward RUN) until
the engine just begins to run smoothly . Then open the choke in
small steps, allowing the engine to accept small changes in
speed and load, until the choke is fully open (in RUN).
During engine warm-up, the equipment can be operated.
To obtain best starting results
Store and fuel lawn mower in level position.
Start lawn mower on hard surface or over previously cut grass.
Do not use a pressurized starting fluid. Starting fluid is
flammable. Severe engine damage or fire may occur.
Periodically remove grass build-up under mower
deck. Remove spark plug wire before removing grass.
When tipping lawn mower to remove grass, keep
spark plug side of engine up.
A warm engine requires less choking than a cold engine.
Starting in cold weather:
Use the correct oil for the starting temperature expected.
De-clutch all possible external loads.
Set speed control at part throttle position.
A warm battery has more starting capacity than a cold battery .
Do not use gasoline left over from summer. Use fresh winter
grade gasoline which has higher volatility to improve starting.
Before starting engine
Move choke control to CHOKE or START position.
If equipment has separate choke and throttle controls, move
throttle control to FAST position.
Note: Choke must fully close. If engine does not start, see
control adjustments on page 5.
Start engine
Always keep hands and feet clear of mower blade or
other rotating machinery.
Electric starter
Turn key to ST AR T or press button. Repeat if necessary with
throttle control in FAST position. Operate engine in FAST
position.
Note: If equipment manufacturer has supplied battery, charge it
before trying to start engine, as equipment manufacturer recommends. Use short starting cycles (15 secs. per min.) to prolong
starter life. Extended cranking can damage starter motor.
PRESS
BUTTON
Typical electric starter
Rewind starter (auxiliary), if equipped
If your engine is equipped
with an auxiliary rewind
starter, grasp rope handle
as illustrated and pull slowly until
resistance is felt. Then pull cord
rapidly to overcome compression, prevent kickback and start
engine. Repeat if necessary with
choke off and throttle control in
FAST position. Operate engine
Rewind starter
in FAST position.
Stop engine
Do not move choke control to CHOKE position to stop engine.
Backfire or engine damage may occur.
Keep throttle control in FAST position. Turn key to OFF.
Always remove key from switch, if equipped, when equipment
is not in use or left unattended.
Typical stop controls
Typical choke and throttle controls
When engine is transported,
Open fuel shut-off valve, if
equipped.
close fuel shut-off valve (if
equipped) to prevent fuel
leakage.
1/4 TURN
Typical fuel shut-off
In the USA and Canada, a 24 hour hot line, 1-800-233-3723, has a menu of pre-recorded messages offering you engine maintenance information.
4
1/4 TURN
Typical fuel shut-off
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