Poulan PP1644JA User Manual - Page 24

engine acceler

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SERVICE AND ADJUSTMENTS ACCELERATION TEST - • Move throttle control lever from slow (.00 to fast (4) position. If engine hesitates or dies, turn idle mixture screw out (counterclockwise) 1/8 turn. Repeat test and continue to adjust, if necessary, until engine accelerates smoothly. High speed stop is factory adjusted. Do not adjust-damage may result. IMPORTANT: NEVER TAMPER WITH THE ENGINE GOVERNOR, WHICH IS FACTORY SET FOR PROPER ENGINE SPEED. OVERSPEEDING THE ENGINE ABOVE THE FACTORY HIGH SPEED SETTING CAN BE DANGEROUS. IF YOU THINK THE ENGINE-GOVERNED HIGH SPEED NEEDS ADJUSTING, CONTACT YOUR NEAREST AUTHORIZED SERVICE CENTER/ DEPARTMENT, WHICH HAS PROPER EQUIPMENT AND EXPERIENCE TO MAKE ANY NECESSARY ADJUSTMENTS. CASING CLAMP SCREW STOP SCREW SPEED CONTROL LEVER STOP SCREW IDLE SPEED ADJUSTING SCREW FIG. 36 0 SPEED CONTROL LEVER IDLE FUEL ADJUSTING NEEDLE THROTTLE CABLE C) 0 FIG. 35 9 FIG. 37 MAIN FUEL ADJUSTING NEEDLE 24

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SERVICE
AND
ADJUSTMENTS
ACCELERATION
TEST
-
•
Move
throttle
control
lever
from
slow
(.00
to
fast
(4)
position.
If
engine
hesitates
or
dies,
turn
idle
mixture
screw
out
(counterclockwise)
1/8
turn.
Repeat
test
and
continue
to
adjust,
if
necessary,
until
engine acceler-
ates
smoothly.
High
speed
stop
is
factory
adjusted.
Do
not
adjust
-damage
may
result.
IMPORTANT:
NEVER
TAMPER
WITH
THE
ENGINE
GOVERNOR,
WHICH
IS
FACTORY
SET
FOR
PROPER
ENGINE
SPEED.
OVERSPEEDING
THE
ENGINE
ABOVE
THE
FACTORY
HIGH
SPEED
SETTING
CAN
BE
DANGEROUS.
IF
YOU
THINK
THE
ENGINE
-GOVERNED
HIGH
SPEED
NEEDS
ADJUSTING,
CONTACT
YOUR
NEAREST
AUTHORIZED
SERVICE
CENTER/
DEPARTMENT,
WHICH
HAS
PROPER
EQUIPMENT
AND
EXPERIENCE
TO
MAKE
ANY
NECESSARY
ADJUSTMENTS.
CASING
STOP
SCREW
SPEED
CONTROL
CLAMP
LEVER
SCREW
THROTTLE
CABLE
C)
0
FIG.
35
STOP
SCREW
SPEED
CONTROL
LEVER
FIG.
36
IDLE
SPEED
ADJUSTING
SCREW
0
9
IDLE
FUEL
ADJUSTING
NEEDLE
MAIN
FUEL
ADJUSTING
NEEDLE
FIG.
37
24