Briggs & Stratton Engine 277039 Operators Manual

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

3
Know Your Engine
Back
view
Front
view
Primer
Spark plug
Choke
(if equipped)
MufflerOil cap &
 Oil dipstick
Fuel fill Rewind/Starter 
handle
Air cleanerSpeed 
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...

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...

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.
Oil Level is OVER FULL
mark on dipstick.DO NOT OVERFILL...

7
ReadyStart 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. Move speed control to FAST, if equipped. Operateengine 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...

8
Starting Instructions
1. Check oil level. Ensure level is at FULL mark ondipstick. 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. Operateengine in FAST position.
5. Close bail, operator control bar on equipment with this feature.
6. Start your engine. See options below:
Rewind Start
•Grasp...

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....

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...