Adjustments, Warning, Carburetor adjustment – Briggs & Stratton 380700 EN User Manual

Page 15

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15

ADJUSTMENTS

TO ADJUST REMOTE THROTTLE CONTROL

If the engine does not start or if it runs roughly, the remote
throttle control may need adjustment. See your authorized
Briggs & Stratton dealer or follow the instructions below.

[1]

Remove air cleaner. Move throttle control to FAST.
(Swivel should be against throttle stop.)

[2]

If not, loosen casing clamp screw. Move casing
and wire in direction shown by arrow until swivel is
against throttle stop.

[3]

Tighten casing clamp screw. Replace air cleaner.

CASING CLAMP SCREW

SWIVEL

EXHAUST MANIFOLD

THROTTLE STOP

CARBURETOR ADJUSTMENT

WARNING

The manufacturer of the equipment on which this
engine is installed specifies top speed at which the
engine will be operated. DO NOT EXCEED this speed.

Differences in fuel, temperature, altitude or load may require
minor carburetor adjustment. Air cleaner and its cover must
be assembled to carburetor before starting engine.
The carburetor on this engine is low emission. It is
equipped with an idle mixture valve with a limiter (see
inset), which allows some adjustment, and an idle speed
adjustment screw. DO NOT remove limiter caps. DO NOT
force beyond limits.

TO ADJUST CARBURETOR

CARBURETOR

THROTTLE LEVER

CYL # 1

IDLE MIXTURE

VALVES

CYL # 2

IDLE SPEED SCREW

LIMITER CAP

[1]

Start engine and warm up approximately 5 minutes
before adjusting.

[2]

With engine running, place throttle control in SLOW.

[3]

Rotate carburetor throttle lever against the idle
speed screw and hold it.

[4]

Turn idle speed screw to obtain 1200 rpm.

[5]

While still holding carburetor throttle lever against
idle speed screw, set cylinder #1 idle mixture valve
midway between limits.

[6]

Then set cylinder #2 idle mixture valve midway
between limits.

[1]

Readjust the idle speed to 1200 rpm, if governed idle
spring is red, or 900 rpm, if governed idle spring is white.

[2]

Release carburetor throttle lever. Move throttle
control to FAST position. Engine should accelerate
smoothly. If it does not, readjust idle mixture valves
slightly counterclockwise.

Governed idle spring

GOVERNED IDLE SPRING

(RED OR WHITE)

EXHAUST

MANIFOLD

Engines operated at about 3000 to 5000 feet (900 to 1500
meters) above sea level may require a high altitude carbu-
retor main jet. If erratic performance is observed, contact a
Briggs & Stratton Authorized Service Dealer for cost to
install/purchase a high altitude carburetor main jet.

Add sales tax if you live in any of the following states: **A

L

5%

, CT 6

%

, FL

6

.5

%

, G

A

4%

, K

Y

6%

, MI 6

%

, MN 6

%

,

M

O

4.225%,

N

Y

8.5%,

O

H

5%,

T

N

6%,

T

X

6.25%,

W

A

6.5%,

W

I 5

%

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ides

of this

or

der

for

m

c

a

re

fully

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in the amount of $_______

(U.S. Dollars, please)

j

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TURE (REQUIRED FOR CREDIT CARD ORDERS)

EXPIRA

TION DA

TE

----------------------

Parts List

Shipping & Handling

**Add State Sales T

a

x

T

otal

$2.00

$1.50

------------ ------------

T

o

purchase a complete list of Genuine Briggs & Stratton Parts for your engine, fill in

both sides of this order form carefully

.

W

e

cannot fill your order without the correct

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ype/Code.

Allow 3 to 4 weeks for delivery

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