Briggs & Stratton 252700 Manual

Briggs

Stratton

OPERATING

AND

MAINTENANCE

INSTRUCTIONS

MODELS

220700

220799

252700

252799

THE

INTEREST

SAFETY

NOT

RUN

ENGINE

EXCESSIVE

SPEEDS.

Operating

engine

excessive

speeds

increases

the

hazard

personal

iniurv

NOT

TAMPER

WITH

PARTS

WHICH

MAY

INCREASE

THE

GOVERNED

SPEED.

For

rotary

lawnmower

safety,

A.N.S.I.

Standard

Safety

Specifications

for

Power

Lawn

Mowers

specify

maximum

blade

tip

speed

19.000

feet

per

minute

(96.5

meters

per

second),

primarily

reduce

the

hazard

from

thrown

objects.

Rotary

lawnmower

manufacturers

select

the

governed

top

speed

the

engine

based

the

length

and

design

the

cutter

blade

and

design

other

mower

parts.

All

rotary

lawnmowers

should

checked

for

conformance

the

A.N.S.I.

Standard

Safely

Specifications

for

Power

Lawn

Mowers

blad^

tip

speed,

the

engine

repaired

replaced,

mower

parts

arc

changed.

DANGER;

GASOLINE

VAPOR

HIGHLY

FLAMMABLE.

Refuel

outdoors

preferably,

only

well

ventilated

areas.

NOT

STORE,

SPILL

USE

GASOLINE

NEAR

OPEN

FLAME

devices

such

stove,

furnace,

water

heater

which

utilize

pilot

light,

devices

that

can

create

spark.

gasoline

accidentally

spilled,

move

machine

away

from

area

spill

and

avoid

creating

any

source

ignition

until

oasoHne

vaoors

have

dissipated.

NOT

REFUEL

GASOLINE

TANK

WHILE

ENGINE

RUNNING.

NOT

RUN

THE

ENGINE

ENCLOSED

AREA.

Exhaust

gases

contain

carbon

monoxide,

odorless

and

deadly

p'oison.

PREVENT

ACCIDENTAL

STARTING

always

remove

the

spark

plug

from

the

engine,

before

working

the

engine

eguioment

driven

the

engine.

Except

for

adjustment;

NOT

operate

engine

air

cleaner

coverdlrectly

over

carburetor

alrintake

removed.

Removal

such

part

could

create

fire

hazard.

NOT

OPERATE

WITHOUT

MUFFLER

TAMPER

WITH

THE

EXHAUST

SYSTEM.

Damaged

mufflers

spark

arresters

could

create

fire

hazard.

Inspect

periodically

and

replace

necessary.

NOT

STRIKE

FLYWHEEL

with

hard

object

metal

tool

this

may

cause

flywheel

shatter

operation,

causing

personal

Injury

Center*^'^^

damage.

Use

Briggs

Stratton

approved

tools

only,

and

doubt,

contact

your

Authorized

Briggs

Stratton

Service

ALWAYS

KEEP

HANDS

AND

FEET

CLEAR

ROTATING

PARTS.

THE

INTEREST

ENVIRONMENT

Increased

exhaust

noise

level.

Therefore,

examine

the

muffler

periodically

sure

functioning

effectively.

purchase

new

muffler,

see

SERVICE

AND

REPAIR

INFORMATION.

^NING;

this

engine

not

equipped

with

spark

arrester

and

used

any

forest

covered,

brush

covered,

grass

covered

iorTinn

maintained

effktive

operator,

State

California

the

above

required

law

(Section

4442

the

California

Public

Resources

elL?

®®

apply

federal

lands.

See

your

Authorized

Briggs

Stratton

Service

Center

lor

sparK

arrestsr

murllar

options.

SERVICE

REPAIR

INFORMATION

service

repair

needed,

contact

Authorized

Briggs

Stratton

Service

Center.

Toserve

you

promptly

and

efficiently,

the

Service

Center

will

need

the

model,

type

and

code

number

your

engine.

Each

Authorized

Service

Center

carries

stock

original

Briggs

Stratton

repair

parts

and

equipped

with

special

service

tools.

Trained

mechanics

assure

expert

repair

service

all

Briggs

Stratton

engines.

Major

engine

repairs

should

not

attempted

unless

you

have

the

proper

tools

and

thorough

knowledge

internal

com¬

bustion

engine

repair

procedure.

Your

nearest

service

center

listed

the

"Yellow

Pages”

under

"Engines,

Gasoline”

"Gasoline

Engines."

one

over

26,000

authorized

dealers

available

serve

you.

This

illustrated

book

includes

“Theories

Operation,”

common

specifications,

and

detailed

infor¬

mation

covering

the

adjustment,

tune-

and

repair

procedures

for

through

H.P.

single

cylinder

models.

available

from

any

Authorized

Briggs

Stratton

Service

Center.

Order

Part

Number

270962.

VcAbw

pages

FORM

NO.

270862-4/80

PRINTED

U.S.A.

fBRIGGS&

STRATTON^

BRIGGS

STRATTON

CORP.

Milwaukee,

Wisconsin

53201

BEFORE

STARTING

REWIND

STARTER

GRIP

FORM

NO.

270862-4/80

PRINTED

U.S.A.

READ

THE

OPERATING

INSTRUCTIONS

THE

EQUIPMENT

THIS

ENGINE

POWERS

Use

high

quality

detergent

oil

classified

"For

Service

SC,

SD,

MS.”

Detergent

oils

keep

the

engine

cleaner

and

retard

the

formation

gum

and

varnish

deposits.

Nothing

should

added

the

recommended

oil.

RECOMMENDED

SAE

VISCOSITY

GRADES

*lf

not

available,

synthetic

oil

may

used

having

5W-20.5W--30

5W-40

viscosity.

FILL

SUMP

WITH

OIL

Place

engine

level.

Clean

area

around

oil

fill

before

removing

oil

fill

plug,

dipstick

,oil-minder.

OIL

FILL

PLUG

Remove

oil

fill

plug

(optional)

oil-

minder.

Fill

crankcase

point

overflowing.

POUR

SLOWLY.

Capacity

pints

(1.42

liters).

Replace

oil

fill

plug

olirminder.

EXTENDED

OIL

FILL.

(Optional)

Remove

cap

and

dipstick.

FILL

FULL

MARK

dipstick,

POUR

SLOWLY.

Capacity

pints

(1.42

liters).

When

checking

oil

level,

screw

dipstick

assembly

firmly

but

slowly

until

cap

bottoms-

tube.

NOT

OVERFILL.

Dipstick

assembly

must

securely

assembled

into

tube

all

times

when

engine

operating.

Charge

battery

before

use

engines

equipped

with

(OPTIONAL)

volt

electric

starter

motor.

See

equipment

manufacturers'

recommendations.

FILL

FUEL

TANK

Use

clean,

fresh,

"regular

grade

leaded

low-lead"

gasoline.

NOT

MIX

OIL

WITH

GASOLINE.

NOTE:

The

use

"lead-free”

gasoline

produces

fewer

combustion

deposits,

but

may

shorten

valve

life

carburetor

adjustment

too

lean.

STARTING

Start,

store

and

fuel

engine

level

position.

OPEN

FUEL

VALVE

CHOKE

ENGINE;

Engine

may

equipped

with

either

manual,

remote

choke-a-matic

controls.

MANUAL

CHOKE:

Move

lever

illustrated.

REMOTE

CHOKE:

Move

equipment

control

lever

"CHOKE"

position.

CHOKE-A-MATIC:

Move

lever

"Full

Choke"

“Start”

position.

NOTE;

This

should

fully

choke

carburetor.

does

not,

remote

control

must

re-adjusted.

See

ADJUSTMENT

section.

NOTE:

warm

engine

requires

less

choking

than

cold

engine.

GOVERNOR

SPEED

CONTROL

LEVER:

Move

governor

speed

control

lever

far

possible

toward

"RUN”

START

ENGINE

DANGER:

ALWAYS

KEEP

HANDS

AND

FEET

CLEAR

MOWER

BLADE

OTHER

ROTATING

MACHINERY.

Rewind

Starter.

Graspstartergripasillustrated

and

pull

out

cord

rapidly

overcome

compression

and

prevent

kick-

back.

Repeat

necessary

with

choke

opened

slightly.

When

engine

starts

open

choke

gradually.

Electric

Starter.

{Optional)

Turn

key

"Start"

position

and/or

press

starter

button

powered

equipment.,When

engine

starts

open

choke

gradually.

NOTE:

fuel

drips

out

carburetor

while

trying

start

engine,

the

engine

over-choked.

Pull

starter

several

times

push

starter

switch

with

choke

open.

COLD

WEATHER

STARTING

HINTS

sure

use

the

proper

oil

for

the

temperature

expected.

Declutch

all

possible

external

loads.

Set

throttle

part-throttle

position.

slightly

richer

fuel

mixture,

obtained

turning

carburetor

needle

valve

1/8

turn,

counterclockwise,

will

usually

improve

cold

starting.

warm

battery

has

much

starting

capacity

than

cold

battery.

Use

fresh

winter

grade

fuel.

When

equipment

not

operation,

provide

protection

from

direct

exposure

weather.

STOP

ENGINE

Move

engine

governor

speed

control

lever

"STOP"

key

“OFF"

position.

CAUTION:

Always

remove

key

from

switch

when

leaving

mower

unattended

when

mower

not

use.

MAINTENANCE

rHECK

OIL

LEVEL

regularly

—

after

each

five

hours

operation.

SURE

OIL

LEVEL

MAINTAINED.

rHANGE

OIL

after

first

five

hours

operation.

Thereafter

change

every

hours

operation.

Remove

oil

drain

plug

and

drain

oil

while

engine

warm.

Replace

drain

plug.

Remove

oil

fill

plug,

oil-minder

dipstick

and

refill

with

new

oil

proper

grade.

Replace

oil

fill

plug,

oil-

minder

dipstick.

SERVICE

AIR

CLEANER

Clean

and

re-oil

foam

element

three

month

intervals

every

hours,

whicljever

occurs

first.

NOTE;

Service

often

under

dusty

conditions.

STANDARD

OIL

FOAM

AIR

CLEANER

emoye

two

screws

and

lift

off

complete

air

cleaner

assembly.

Remove

screen

and

spacers

from

foam

element.

Remove

foam

element

from

air

cleaner

body.

Wash

foam

element

kerosene'or"nqulci

detergent

and

water

remove

dirt.

Wrap

foam

cloth

and

squeeze

dry.

Saturate

foam

engine

oil.

Squeeze

remove

excess

oil.

Assemble

parts

—

securely

fasten

carburetor

with

screws.

When

assembling

make

certain

the

lip

the

foam

element

extends

over

edge

the

air

cleaner

body.

The

foam

element

lip

will

form

protective

seal.

DUCTED

OIL

FOAM

AIR

CLEANER

Same

standard

except

after

foam

element

removed,

the

element

support

and

inside

body

should

cleaned

before

assembly

the

air

cleaner.

CARTRIDGE

AIR

CLEANER

Remove

air

cleaner

stud,

screw

and

cover.

Replace

cover

gasket

damaged.

Remove

plate

screw,

washer

arid

plate.

Remove

cartridge

and

clean

air

cleaner

body

carefully

prevent

dirt

from

entering

carburetor.

Brush

dirt

from

body

thru

holes

Into

duct.'

Clean

cartridge

tapping

gently

flat

surface.

very

dirty,

replace

cartridge

wash

low

non¬

sudsing

detergent

and

warm

wat,er

solution.

Rinse

thoroughly

from

OUTSIDE

until

water

clear.

Cartridge

must

allowed

stand

and

air

dry

thoroughly

before

using.

Reassemble

air

cleaner.

CAUTION:

Petroleum

solvents,

such

kerosene,

are

not

used

clean

cartridge.

They

may

cause

deterioration

the

cartridge.

NOT

OIL

CARTRIDGE.

NOT

USE

PRESSURIZED

AIR

CLEAN

DRY

CARTRIDGE.

CLEAN

COOLING

SYSTEM

•—

Grass,

chaff

dirt

may

clog

the

rotating

screen

and

the

air

cooling

system

after

prolonged

service

cutting

tall

dry

grasses

hay.

Yearly

every

100

hours,

whichever

occurs

first,

remove

the

blower

housing

and

clean

the

area

shown

avoid

overspeeding,

overheating

and

engine

damage.

Clean

often

necessary.

DANGER:

Periodically

clean

muffler

area

remove

all

grass,

dirt

and

combustible

debris,

SPARK

PLUG

—

Clean

and

reset

gap

.030"

every

100

hours

operation.

CAUTION:

not

blast

clean

spark

plug.

Spark

plug

should

cleaned

scraping

wire

brushing

and

washing

with

commercial

solvent.

Sparking

can

bccur

wire

terminal

does

not

fit

firmly

spark

plug,

stop

switch

vibrates

against

spark

plug.

Reform

terminal

repair

switch

necessary.

REMOVE

COMBUSTION

DEPOSITS

every

100-300

hours

operation.

Remove

cylinder

head

and

cylinder

head

shield.

Scrape

and

wire

brush

the

combustion

deposits

from

cylinder,

cylinder

head,

top

piston

and

around

valves.

Use

soft

brush

remove

deposits.

Re-assemble

gasket,

cylinder

head

and

cylinder

head

shield.

Turn

screws

down

finger

tight.

Torque

cylinder

head

screws

staggered

sequence

165

inch

pounds

(18.65

Nm).

SPARK

ARRESTER

EQUIPPED

MUFFLER

—

engine

muffler

equipped

with

spark

arrester

screen

assembly,

remove

every

hours

for

cleaning

and

inspection.

Replace

damaged.

ADJUSTMENTS

CARBURETOR

ADJUSTMENTS

Minor

carburetor

adjustment

may

required

com¬

pensate

for

differences

fuel,

temperature,

altitude

load.

ADJUST

CARBURETOR

—

Turn

needle

valve

clock¬

wise

until

just

closes.

CAUTION:

Valves

may

damaged

turning

them

too

far.

Now

open

needle

valve

turns

counterclockwise.

idle

valve

same

manner

and

open

114

turn.

This

initial

adjustment

will

permit

the

engine

started

and

warmed

prior

final

adjustment.

Place

governor

speed

control

lever

“FAST"

position.

Turn

needle

valve

until

engine-slows

(clockwise

—

lean

mixture).

Then

turn

out

past

smooth

operating

point

(rich

mixture).

Now

turn

needle

valve

midpoint

between.rich

and

lean.

Next,

adjust

idle

RPM.

Rotate

throttle

counter¬

clockwise

and

hold

against

stop.

Adjust

Idle

speed

adjusting

screw

obtain

1750

RPM.

Holding

throttle

against

idle

stop,

turn

idle

valve

(lean)

and

out

(rich).

Set

midpoint

between

rich

and

lean.

Re-check

idle

RPM.

Release

throttle.

engine

will

not

accelerate

properly,

the

carburetor

should

re-adjusted,

usually

slightly

richer

mixture.

CONTROL

ADJUSTMENTS

Proper

choke

and

stop

switch

operation

dependent

upon

proper

adjustment

remote

controls

the

powered

equipment.

CHECK

OPERATION

CHOKE

CONTROLS:

Move

remote

control

lever

"Choke"

position.

The

carburetor

choke

should

closed.

ADJUST

CHOKE:

Place

remote

control

lever

equipment

"CHOKE"

position.

Loosen

control

casing

clamp

screw.

Move

casing

and

wire

direction

shown

arrow.

Tighten

casing

clamp

screw.

ADJUST

CHOKE-A-MATIC

CONTROLS;

Place

remote

speed

control

lever

equipment

FAST

(high

speed)

position.

Loosen

control

casing

clamp

screw

“C.”

Move

control

easing

“A”

and

wire

until

lever

“E”

lines

with

bottom

edge

tang

"F."

Tighten

casing

clamp

screw

“C.”

Move

remote

control

"STOP”

position.

Lever

should

make

good

contact

with

stop

switch,

equipped.

GOVERNOR

SPEED

CONTROL

ADJUSTMENTS

The

acceptable

operating

speed

range

1800

3600

RPM.

Idle

speed

1750

RPM.

The

manufacturer

the

equipment

which

the

engine

used,

specifies

the

top

governed

load

speed

which

the

engine

may

operated.

NOT

EXCEED

this

speed.

increase

engine

speed

move

control

direction

shown

arrow.

Refer

illustration.

GENERAL

INFORMATION

These

engines

are

single

cylinder,

L-head,

air-cooled

type.

MODEL

SERIES

220700

220799

fo'’®.

-7/16"

(87.31

mm)

Stroke.

2-3/8"

(60.33

mni)

Displacement

.22.04

cu.

In.

(361.2

cc)

Horsepower.;

H.P.

Max.,@

3600

RPM

Torque

(Ft.

Lbs.)

.16.8

Max.

2400

RPM

MODEL

SERIES

252700

252799

Bore.

-7/16"

(87.31

mm)

Stroke.

2-5/8"

(66.68

mm)

Displacement

.24.36

cu.

in.

(399.2

cc)

Horsepower.

Max.

3600

RPM

Torque

(Ft.

Lbs.)

.16.8

Max.

2800

RPM

The

horsepower

ratings

listed

above

are

established

accordance

with

the

Society

Automotive

Engineers

Test

Code-J607.

For

practical

operation,

the

horsepower

should

not

exceed

85%

these

ratings.

Engine

power

will

decrease

3’/^%

for

each

1,000

feet

(304.8

above

sea

level

and

for

each

10®

above

60®

(16®

C).

some

areas,

local

law

requires

the

use

resistor

spark

plug

suppress

ignition

signals.

engine

was

originally

equipped

with

resistor

spark

plug,

sure

use

the

same

type

spark

plug

for

replacement.

TUNE-UP

SPECIFICATIONS

Champion

Autolite

Robert

Bosch

CJ-8

235

WS9E

J-8

295

RCJ-8

245

WSR9E

RJ-8

306

—

.030"

(.76

mm)

Spark

Plug

Type

Short

Plug

Long

Plug

Resistor

Short

Plug

Resistor

Long

Plug

Ignition

Point

Gap.020"

(.51

mm)

Intake

Valve

Clearance

.005"-.007"

(.13-.18

mm)

Exhaust

Valve

Clearance..009"-,011"

(.23-.28

mm)

WARNING:

For

electrical

safety

always

remove

cable

from

negative

{-)

side

the

battery

before

attempting

any

repairs

maintenance.

Typical

Wiring

Diagrams

STORAGE

INSTRUCTIONS

Engines

stored

over

days

should

completely

drained

fuel

prevent

gum

deposits

forming

essential

carburetor

parts,

fuel

filter

and

tank.

Note:

The

use

fuel

additive,

such

STA-BIL,

equivalent,

will

minimize

the

formation

fuel

gum

deposits

during

storage.

Such

additive

may

added

the

gasoline

the

fuel

tank

the

engine,

the

gasoline

storage

container.

All

fuel

should

removed

from

the

tank.

Run

the

engine

until

stops

from

lack

fuel.

The

small

amount

fuel

that

remains

the

sump

the

tank

should

removed

by.absorbing

with

clean,

dry

cloth.

While

engine

still

warm,

drain

oil

from

crankcase.

Refill

with

fresh

oil.

Remove

spark

plug,

pour

one

ounce

(29.6

cc)

engine

oil

into

cylinder

and

crank

slowly

distribute

oil.

Replace

spark

plug.

Clean

dirt

and

chaff

from

cylinder,

cylinder

head

fins,

blower

housing,

rotating

screen

and

muffler

areas.

Store

clean

and

dry

area.

BRIGGS

STRATTON

ENGINES

ARE

MADE

UNDER

ONE

THE

FOLLOWING

PATENTS

28.960

3.149.618

3.276.439

3,526,146

3,625.071

3831.268

2.999,491

3,194.224

3.305,223

3.572.218

3,650,354

3,882.336

2,999.562

3,236.937

3.457.804

3,572.307

3,745.393

3.901.199

3.114.851

3,242,741

3.465.740

3,625.492

738345

961

724

3,118.433

3,252.449

3.968.854

3.971.353

3,991.152

4.168.288

DESIGN

0-213.4760-215.769

0-224,170

0-247.177

OTHER

PATENTS

PENDING

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