30
KEY PART
NO. NO.
DESCRIPTION
1 592890
Cylinder
Assembly
3
299819s Seal-Oil (Magneto Side)
4 493279
Sump-Engine
5 590411
Head-Cylinder
7 799875
Gasket-Cylinder
Head
8 590395
Breather
Assembly
9 699472
Gasket-Breather
10 691125
Screw
(Breather
Assembly)
11 691781
Tube-Breather
11A 691923 Tube-Breather
(Air Cleaner Primer Base)
12 692232
Gasket-Crankcase
13
590422
Screw (Cylinder Head)
15 691680
Plug-Oil
Drain
16 797017
Crankshaft
20
399781s Seal-Oil (PTO Side)
22 691092
Screw
(Crankcase Cover / Sump)
23 691987
Flywheel
24 222698s
Key-Flywheel
(Aluminum)
25
590404
Piston Assembly (Standard)
590405
Piston
Assembly
(.020"
Oversize)
26
590402
Ring Set (Standard)
590403
Ring Set (.020" Oversize)
27 691588
Lock-Piston
Pin
28 298909
Pin-Piston
29 797306
Rod-Connecting
32
691664
Screw (Connecting Rod)
(1/4-28 x 1.09)
32A
695759
Screw (Connecting Rod)
(1/4-28 x 1.52)
33 590394
Valve-Exhaust
34 590393
Valve-Intake
35 691270
Spring-Valve
(Intake)
36 691270
Spring-Valve
(Exhaust)
37 793756
Guard-Flywheel
40 692194
Retainer-Valve
43 691997
Slinger-Governor/Oil
45 690548
Tappet-Valve
46 691449
Camshaft
48
N/A
Short Block (Not Available
At This Printing)
50 794305
Manifold-Intake
KEY PART
NO. NO.
DESCRIPTION
51 794306
Gasket-Intake
54
691650
Screw (Intake Manifold)
55 691421
Housing-Rewind
Starter
58 697316
Rope-Starter
60 281434s
Grip-Starter
Rope
60A 799716 Grip-Starter
Rope
65
690837
Screw (Rewind Starter)
78
691108
Screw (Flywheel Guard)
81 691740
Lock-Muffl
er
Screw
89 692348
Plug-Oil
(Cylinder)
97 696565
Shaft-Throttle
104 797622 Pin-Float
Hinge
108 795935 Valve-Choke
109 795936 Shaft-Choke
117 590440 Jet-Main
(Standard)
118
798661
Jet-Main (High Altitude)
(5000 > 9000 Feet)
121 498260 Kit-Carburetor
Overhaul
125 799866 Carburetor
127 694468 Plug-Welch
130 696564 Valve-Throttle
133 398187 Float-Carburetor
134 398188 Kit-Needle/Seat
137 796610 Gasket-Float
Bowl
141 796193 Kit-Choke
Shaft
163 795629 Gasket-Air
Cleaner
187 791766 Line-Fuel
(Cut To Required Length)
188
693999
Screw (Control Bracket)
190
690940
Screw (Fuel Tank)
202 691829 Link-Mechanical
Governor
209
699056
Spring-Governor (No Color)
222 593582 Bracket-Control
227 690783 Lever-Governor
Control
276 271716 Washer-Sealing
287
690940
Screw (Dipstick Tube)
291 593208 Thermostat
300 593581 Muffl
er
304 790826 Housing-Blower
305
691108
Screw (Blower Housing)
(1/4-20 x .62)
305A 590763
Screw (Blower Housing)
(1/4-20 x .78)
306 790836 Shield-Cylinder
MODEL NUMBER 126M02-0303-F4
BRIGGS & STRATTON 4-CYCLE ENGINE
3
• Do not operate the machine while under
the infl uence of alcohol or drugs.
• Never operate machine in wet grass.
Always be sure of your footing: keep a
fi rm hold on the handle; walk, never run.
• Disengage the drive system, if so equipped,
before starting the engine (motor).
• If the equipment should start to vi brate
abnormally, stop the engine (motor) and
check immediately for the cause. Vibra-
tion is generally a warning of trouble.
• Always wear eye protection when op er-
at ing machine.
• Use extra care when approaching blind
corners, shrubs, trees, or other objects
that may obscure vision.
• When loading or unloading this machine,
do not exceed the maximum recom-
mended operation angle of 15°.
• Wear proper Personal Protective Equip-
ment (PPE) while operating this ma-
chine, including (at a minimum) sturdy
footwear, eye protection, and hearing
protection. Do not mow in shorts or
open toed footwear.
Always let someone know you are outside
mowing.
III. SLOPE OPERATION
Slopes are a major factor related to slip &
fall accidents, which can result in severe
injury. All slopes require extra caution. If
you feel uneasy on a slope, do not mow it.
DO:
• Mow across the face of slopes: nev er
up and down. Exercise extreme caution
when changing direction on slopes.
• Remove obstacles such as rocks, tree
limbs, etc.
• Watch for holes, ruts, bumps or hidden
objects. Uneven terrain could cause a
slip and fall accident. Tall grass can hide
obstacles.
DO NOT:
• Do not mow near drop-offs, ditches or
embankments. You could lose your foot-
ing or balance.
• Do not mow on wet grass or excessively
steep slopes. Poor footing could cause a
slip and fall accident.
IV. SAFE HANDLING OF GASOLINE
To avoid personal injury or property dam-
age, use extreme care in handling gaso-
line. Gasoline is extremely fl ammable and
the vapors are explosive.
• Extinguish all cigarettes, cigars, pipes
and other sources of ignition.
• Use only an approved container.
• Never remove gas cap or add fuel with
the engine running.
• Allow engine to cool before refueling.
• Never refuel the machine indoors.
• Never store the machine or fuel contain-
er where there is an open fl ame, spark
or pilot light such as a water heater or on
other appliances.
• Never fi ll containers inside a vehicle, on
a truck or trailer bed with a plastic liner.
Always place containers on the ground
away from your vehicle before fi lling.
• Remove gas-powered equipment from
the truck or trailer and refuel it on the
ground. If this is not possible, then
refuel such equipment with a portable
container, rather than from a gasoline
dispenser nozzle.
• Keep the nozzle in contact with the rim
of the fuel tank or container opening at
all times until fueling is complete. Do
not use a nozzle lock-open device.
• If fuel is spilled on clothing, change
clothing immediately.
• Never overfi ll fuel tank. Replace gas
cap and tighten securely.
V. GENERAL SERVICE
• Never run a machine inside a closed area.
• Never make adjustments or repairs with
the engine (motor) running. Dis con nect the
spark plug wire, and keep the wire away
from the plug to prevent ac ci den tal starting.
• Keep all nuts and bolts tight to be sure the
equipment is in safe working condition.
• Never tamper with safety devices.
Check their proper operation reg u lar ly.
Never do anything to interfere with the
intended function of a safety device
or reduce the protection provided by a
safety device.
• Keep machine free of grass, leaves, or
other debris build-up. Clean oil or fuel spill-
age. Allow machine to cool before storing.
• Stop and inspect the equipment if you
strike an object. Repair, if nec es sary,
before restarting.
• Never attempt to make wheel height
adjustments while the engine is running.
• Grass catcher components are sub ject
to wear, dam age, and de te ri o ra tion,
which could expose moving parts or
allow objects to be thrown. Frequently
check com po nents and replace with
man u fac tur er’s recommended parts,
when necessary.
• Mower blades are sharp and can cut.
Wrap the blade(s) or wear gloves, and
use extra caution when ser vic ing them.
• Do not change the engine governor set-
ting or overspeed the engine.
• Maintain or replace safety and instruc-
tion labels, as necessary.
