PROCEDURE
FOR
SETTING
IDLING
SPEED
AND
CO%
*
If
the engine performance is good, the pilot
screw
I Volume control screw (VCS) need
not be disturbed.
* The idling speed can be adjusted only with
the idling screw.
* If there is a performance deterioration,
clean carburetor and adjust the idling
speed.
NOTE:
Before adjusting the idling speed, correct the free
play of cable assembly throttle to 1-2mm.
ADJUST THE IDLING SPEED
AS
FOLLOWS:
* Warm up the engine adequately and set
the idling screw
so
that the engine runs at
a higher rpm than its idling specification .
* Now turn the pilot screw
in
& out and select
a position where the eng;ne rpm reaches
the maximum. Normally this will occur
between 1 to 4 turns of pilot screw from
full close position.
* Now adjust the idle screw to bring down
the engine revolution to the specified idle
rpm.
* After adjusting the idling rpm check the
CO%
and
readjust
the
pilot
screw
if
necessary.
CARRY
OUT
THE
CO
EMISSION
CHECK
AS
FOLLOWS:
* Warmup the engine by riding the vehicle
for about 4 kms.
* Warmup the measuring instrument as per
the
equipment
manufacturer's
recommendations, before carrying out the
measurements.
* Examine the Muffler Assembly for
any
leakage. If any leakage noticed, ensure to
arrest the leakage before measurement of
co.
* Set the idling speed (900 ± 100 rpm) as
explained
in
chapter
"Periodic
Maintenance" of the vehicle manual.
* Fix a separate special tube made of silicon
rubber to the Body Complete Muffler and
tighten its clamp screw.
* . Insert the sample probe of analyser atleast
600mm inside special tube to prevent the
dilution of exhaust sample with the air.
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