Briggs & Stratton 120000 User manual

Operator’s Manual
Quick Start Guide
on page 4
BRIGGSandSTRATTON.com
ECopyright Briggs & Stratton Corporation
Milwaukee, Wisconsin 53201 U.S.A.
Form No. 277039-9/06
Printed in U.S.A.
Model 120000 Quantum 600 Series
625 Series
650 Series
675 Series

Safety References
The safety alert symbol is used to identify safety
information about hazards that can result in personal
injury. A signal word (DANGER, WARNING, or
CAUTION) is used with the alert symbol to indicate the
likelihood and the potential severity of injury. In addition,
a hazard symbol may be used to represent the type of
hazard.
DANGER indicates a hazard which, if not
avoided, will result in death or serious
injury.
WARNING indicates a hazard which, if not
avoided, could result in death or serious
injury.
CAUTION indicates a hazard which, if not
avoided, might result in minor or moderate
injury.
CAUTION,when used without the alert
symbol, indicates a situation that could result
in damage to the engine.
This manual contains safety
information to make you aware of
the hazards and risks associated with engines.
Because Briggs & Stratton does not necessarily
know what equipment this engine will power, it is
important that you read the instructions and the
instructions for the equipment this engine powers.
Table of Contents
Safety 2. . . . . . . . . . . . . . . . . . . . . . . . . . .
Features 3. . . . . . . . . . . . . . . . . . . . . . . . . .
QuickStart 4. . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 6. . . . . . . . . . . . . . . . . .
READYSTARTE7. . . . . . . . . . . . . . . . . . .
Starting 8. . . . . . . . . . . . . . . . . . . . . . . . . .
Operating & Stopping 9. . . . . . . . . . . . .
Oil 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fuel 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Fresh StartEFuel Cap 12. . . . . . . . . . . .
Specifications 13. . . . . . . . . . . . . . . . . . .
Maintenance 14. . . . . . . . . . . . . . . . . . . . .
Storage & Service 17. . . . . . . . . . . . . . . .
Warranty Information 18. . . . . . . . . . . . .
SYMBOLS ASSOCIATED
WITH THIS ENGINE:
Explosion
Toxic F u me s
Moving Parts
Shock
Hot Surface
Kickback
Fire
On Off
Fuel Shutoff
Read
Operating
Manual
Fuel
Choke
Oil
Run
Stop
Slow Fast
Hazardous
Chemical
WARNING
The engine exhaust from this product contains
chemicals known to the State of California to cause
cancer, birth defects, or other reproductive harm.
WARNING
Briggs & Stratton does not approve or authorize
the use of these engines on 3-wheel All Terrain
Vehicles (ATVs), motor bikes, fun/recreational
go-karts, aircraft products or vehicles intended for
use in competitive events. Use of these engines in
such applications could result in property damage,
serious injury (including paralysis), or even death.
This engine is shipped from Briggs & Stratton
without oil. If you start the engine without oil, the
engine will be damaged beyond repair and will
not be covered under warranty.
CAUTION

3
Know Your Engine
Back
view
Front
view
Primer
Spark plug
Choke
(if equipped)
Muffler
Oil cap &
Oil dipstick
Fuel fill
Rewind/Starter
handle
Air cleaner
Speed
control lever
Side oil drain plug
(if equipped)

4
See page 10 for details.
HOW?
Unscrew and remove oil cap.
Pour in oil. Replace cap.
WHAT KIND?
High quality SAE 30 motor oil.
HOW MUCH?
To FULL line on dipstick.
Engine holds about 20 oz. (0.61l).
SPECIAL CONCERNS?
Do not overfill.
Do not tip engine.
See page 12 for details.
WARNING
Starting engine creates sparking.
Gasoline and its vapors are
extremely flammable and
explosive. Fire or explosion can
cause severe burns or death.
If fuel spills, wait until it
evaporates before starting
engine.
DO NOT use pressurized starting
fluids.
HOW?
Remove gas cap. Pour in gas. Replace cap.
WHAT KIND?
HOW MUCH?
Fill to one inch below top of fuel fill neck.
SPECIAL CONCERNS?
Fuel equipment outdoors. If fuel spills, wait
until it evaporates before starting engine.
Unleaded, 85 octane or higher.
FULL
ADD OIL
WIPE DIPSTICK.
REPLACE DIPSTICK
AND TIGHTEN CAP.
REMOVE DIPSTICK
TO READ LEVEL.
1
ADD GAS
23 4
This manual contains safety information to make you aware of the hazards and risks
associated with engines. Read the Operating Manual before starting your engine.
1
432

5
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly
pull the cord until you feel
resistance, then pull rapidly.
Broken bones, fractures, bruises or
sprains could result.
Rotating parts can contact or
entangle hands, feet, hair, clothing,
or accessories.
Traumatic amputation or severe
laceration can result.
For complete starting instructions
see page 8.
HOW?
Locate primer bulb. Press with finger. Wait two
seconds between each press.
HOW MANY TIMES?
Press 5times the FIRST TIME you start engine.
For all future starts, press 3 times.
SPECIAL CONCERNS?
Pressing primer too many times can flood
engine with gas. A flooded engine will not start.
See Troubleshooting section.
HOW?
Stand behind equipment.
Close bail, or operator control bar, on
equipment with this feature. If you do not keep
bail held against equipment handle, engine will
not start.
Slowly pull cord until you feel resistance, then
pull quickly.
SPECIAL CONCERNS?
To Stop Engine −
Let go of bail, or operator control bar, which
activates brake and stops engine from running.
WARNING
PUSH PRIMER
1 2 34
PULL STARTER HANDLE
14
If ReadyStart™go to step 4.
If electric start equipped see page 8.
Need assistance? 1-800-233-3723
(USA and Canada ONLY, Pre-recorded message.)
www.briggsandstratton.com
If speed control equipped, start in FAST position.
Also, see warning at right.
2 3

6
Starter Handle will not pull.
•Ensure all external equipment/engine loads are removed
before starting engine. Direct coupled equipment
components must be securely attached such as, but not
limited to, blades, impellors, pulleys, sprockets, etc.
WARNING
Troubleshooting
Engine will not start.
•Drain excess oil from engine to bring level to
FULL mark on dipstick.
•Check air cleaner filter for oil saturation.
If saturated, clean or replace filter.
rOil Level is OVER FULL
mark on dipstick. DO NOT OVERFILL OIL.
Overfilling may cause
smoking, hard starting, spark
plug fouling or oil saturation of
air filter.
CAUTION
rOut of Fuel
rEngine Flooded
rSpark Plug Fouling
•Add gasoline.
•Prime engine.
•Set choke (if equipped) to OPEN/RUN
position, place throttle (if equipped) in FAST
and continue to pull starter handle.
•Remove spark plug. Clean, check gap,
replace. See Maintenance section.
WARNING
•Ensure fuel cap, and air
cleaner are in place
before starting engine.
•Before refueling −turn
engine OFF and let
engine cool at least 2
minutes before
removing gas cap.
•Check fuel lines, tank,
cap, and fittings for
cracks or leaks.
Replace if necessary.
•Do not crank engine
with spark plug
removed.
Engine is Smoking or Running Rough.
•Check for fouled spark plug.
•Check air cleaner filter for oil saturation.
If saturated, clean or replace filter.
If engine is tipped to transport
equipment, to remove debris, to
drain oil, etc., keep the spark
plug side of engine up.
CAUTION
rEngine may have been
tipped during transport.
KEEP SPARK PLUG
UP
rThe bail, operator control bar, is not
engaged which releases the brake from
the flywheel allowing the engine to turn
over.
rPlace equipment on flat level surface.

7
ReadyStartEInstructions
1. Check oil level. Ensure level is at FULL mark on
dipstick. Use a high quality motor oil. Check the oil
recommendations for the correct oil type for
expected starting temperature.
2. Move speed control to FAST, if equipped. Operate
engine in FAST position.
3. Close bail, operator control bar on equipment with
this feature.
4. Start your engine. See options below:
Rewind Start
•Grasp rope handle. Pull slowly until resistance is
felt, then pull rapidly to start engine and avoid
kickback.
WARNING
Electric Start
•Insert key and turn to START.
•Allow engine to warm up.
Go to Operating Engine on page 9.
•Make sure spark plug, muffler, fuel
cap and air cleaner are in place.
•Do not crank engine with spark plug
removed.
•DO NOT start engine if there is a
natural or LP gas leak in area.
•If there is natural or LP gas leakage in
area, do not start engine.
•Do not use pressurized starting fluids
because vapors are flammable.
WARNING
•Start and run engine outdoors.
•Do not start or run engine in
enclosed area, even if doors or
windows are open.
WARNING
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly pull
the cord until you feel resistance,
then pull rapidly.
Broken bones, fractures, bruises
or sprains could result.
Rotating parts can contact or
entangle hands, feet, hair,
clothing, or accessories.
Traumatic amputation or severe
laceration can result.
WARNING
To prolong starter life use short starting cycles
(5 seconds maximum, then wait one minute).
Follow equipment manufacturer’s
recommendations for charging battery.
CAUTION

8
Starting Instructions
1. Check oil level. Ensure level is at FULL mark on
dipstick. Use a high quality motor oil. Check the oil
recommendations for the correct oil type for
expected starting temperature.
2. Open fuel shut-off valve1/4 turn, if equipped.
3. Firmly push primer bulb 3 times, if equipped.
4. Move speed control to FAST, if equipped. Operate
engine in FAST position.
5. Close bail, operator control bar on equipment with
this feature.
6. Start your engine. See options below:
Rewind Start
•Grasp rope handle. Pull slowly until resistance is
felt, then pull rapidly to start engine and avoid
kickback.
WARNING
Electric Start
•Insert key and turn to START.
•Allow engine to warm up.
•Make sure spark plug, muffler, fuel
cap and air cleaner are in place.
•Do not crank engine with spark plug
removed.
•DO NOT start engine if there is a
natural or LP gas leak in area.
•If there is natural or LP gas leakage in
area, do not start engine.
•Do not use pressurized starting fluids
because vapors are flammable.
WARNING
•Start and run engine outdoors.
•Do not start or run engine in
enclosed area, even if doors or
windows are open.
WARNING
Rapid retraction of starter cord
(kickback) will pull hand and arm
toward engine faster than you can
let go. To avoid kickback, slowly pull
the cord until you feel resistance,
then pull rapidly.
Broken bones, fractures, bruises
or sprains could result.
Rotating parts can contact or
entangle hands, feet, hair,
clothing, or accessories.
Traumatic amputation or severe
laceration can result.
WARNING
To prolong starter life use short starting cycles
(5 seconds maximum, then wait one minute).
Follow equipment manufacturer’s
recommendations for charging battery.
CAUTION

9
Operating Engine
After engine has started, let it warm up several seconds
to several minutes, depending on outside temperature.
For maximum performance and life, operate engine
with speed control in FAST, if equipped.
•Do not tip engine or equipment at angle which
causes gasoline to spill.
Periodically remove grass buildup under mower deck.
See Maintenance section.
Engines give off carbon monoxide,
an odorless, colorless, poison
gas.
Breathing carbon monoxide can
cause nausea, fainting or death.
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 combustibles from
muffler area and cylinder area.
•Install and maintain in working order a spark
arrester before using equipment on
forest-covered, grass-covered, brush-covered
unimproved land. The state of California
requires this (Section 4442 of the California
Public Resources Code). Other states may
have similar laws. Federal laws apply on
federal land.
WARNING
•Operate equipment with guards in
place.
•Keep hands and feet away from
rotating parts.
•Tie up long hair and remove
jewelry.
•Do not wear loose-fitting clothing,
dangling drawstrings or items that
could become caught.
WARNING
Stopping Engine
Depending on how your engine is equipped follow the
steps below:
1. Move speed control to SLOW then to STOP, then
release bail −OR −
2. Push stop switch to OFF −OR −
Do not stop engine by moving choke control to
CHOKE (if equipped). Backfire, fire or engine
damage could occur.
CAUTION
3. Turn key to OFF. Remove key and store out of
reach of children.
4. Close fuel shut-off valve if equipped.

10
Oil
Capacity
The engine holds approximately (18 oz.; 0.5 liter).
•Use a high quality SAE 30 weight motor oil.
•Do not use special additives.
•Choose a viscosity according to the table opposite.
Note: Synthetic oil meeting ILSAC
GF-2, API certification mark and API
service symbol (shown at left) with
“SJ/CF ENERGY CONSERVING” or
higher, is an acceptable oil at all
temperatures. Use of synthetic oil
does not alter required oil change
intervals.
Recommendation
°F-20 0 20 40 60 80 100
°C-30 -20 -10 0 10 20 30 40
STARTING TEMPERATURE RANGE BEFORE NEXT OIL CHANGE
*
**
32
Viscosity Grades
* Air cooled engines run hotter than automotive
engines. The use of non-synthetic multi-viscosity oils
(5W-30, 10W-30, etc.) in temperatures above 40°F
(4°C) will result in higher than normal oil
consumption. When using a multi-viscosity oil, check
oil level more frequently.
** 30 weight oil, if used below 40°F (4°C), will result in
hard starting and possible engine bore damage due
to inadequate lubrication.
CAUTION
Checking Oil Level •Check oil level before starting the engine.
•Check level daily, or after every eight (8) hours.
•Keep oil level at FULL.
1. Place engine level
and clean around oil
fill area.
2. Remove dipstick and
wipe clean with cloth.
3. Replace and tighten
dipstick. Remove and
check oil level. Oil lev-
el should be at FULL
line on dipstick.
4. If needed, add oil
slowly - recheck. Do
not over fill.
5. Wipe dipstick clean,
replace and tighten.
Remove and check oil
level. Oil level should
be at FULL line on
dipstick.
Do not overfill. Overfilling with oil may cause the
engine to not start, or hard starting. If over the
FULL mark on dipstick, drain oil to reduce oil
level to FULL mark on dipstick.
CAUTION