Subaru Legacy III (2000-2003 year). Manual - part 19

PM-26

PERIODIC MAINTENANCE SERVICES

IDLE MIXTURE

15.Idle Mixture

A: INSPECTION AND ADJUSTMENT

1. IDLE MIXTURE

Before measuring the idle mixture, make sure that
the ignition timing and the engine idle speed are
within specifications.
1) Set the gear position at “Neutral” for MT, or “N”
or “P” for AT.
2) Warm up engine sufficiently until cooling fan
starts to operate.
3) Measure the idle mixture with the CO meter.

4) If out of specification, adjust the idle mixture us-
ing CO adjusting screw of mass air flow sensor.
5) After adjusting the CO value, check and adjust
increment coefficient of CO resistor by using Select
Monitor.

(1) Select “Current data display & Save” on the
select monitor.
(2) If out of specified data, adjust the increment
coefficient of CO resistor while rotating CO ad-
justing screw (A).

Specified data:

0.28 — 4.22 V

NOTE:
If driving the vehicle on out of specified data, the
“trouble code 49” is indicated in many case.

Engine idle speed

700

100 rpm

1.0

0.5%

PM-00146

( A )

PM-27

PERIODIC MAINTENANCE SERVICES

TRANSMISSION OIL

16.Transmission Oil

A: REPLACEMENT

1. MANUAL TRANSMISSION

1) Drain gear oil by removing drain plug after allow-
ing the engine to cool for 3 to 4 hours.

NOTE:
• Before starting work, cool off the engine well.
• If transmission gear oil splashes on exhaust
pipe, wipe it clean.

2) Reinstall drain plug after draining gear oil and
tighten it to the specified torque.

Tightening torque:

44 N·m (4.5 kgf-m, 32.5 ft-lb)

NOTE:
• Replace the gasket with a new one.
• Each oil manufacturer has its base oil and addi-
tives. Thus, do not mix two or more brands.
3) Fill transmission gear oil through the oil level
gauge hole up to the upper point of level gauge.

Gear oil capacity:

Single range transmission

3.5

(3.7 US qt, 3.1 Imp qt)

Dual range transmission

4.0

(4.2 US qt, 3.5 Imp qt)

(A) Oil level gauge

(B) Upper level

PM-00029

PM-00030

(B)

(C)

(A)

PM-28

PERIODIC MAINTENANCE SERVICES

ATF

17.ATF

A: INSPECTION

1) Raise ATF temperature to 70 to 80

C (158 to

176

F) by driving for approx. 10 min.

NOTE:
The level of ATF varies with fluid temperature. Pay
attention to the fluid temperature when checking oil
level.

2) Make sure the vehicle is level. After selecting all
positions (P, R, N, D, 3, 2, 1), set the select leveler
in “P” range. Measure fluid level with the engine
idling.

NOTE:
After running, idle the engine for one or two min-
utes before measurement.
3) If the fluid level is below the center between up-
per and lower marks, add the recommended ATF
until the fluid level is found within the specified
range (above the center between upper and lower
marks). When the transmission is hot, the level
should be above the center of upper and lower
marks, and when it is cold, the level should be
found below the center of these two marks.

CAUTION:
• Use care not to exceed the upper limit level.
• ATF level varies with temperature. Remem-
ber that the addition of fluid to the upper limit
mark when the transmission is cold will result
in the overfilling of fluid.

4) Fluid temperature rising speed
• By idling the engine
Time for temperature rise to 70

C (158

F) with at-

mospheric temperature of 0

C (32

F): More than

25 minutes
<Reference>
Time for temperature rise to 30

C (86

F) with atmo-

spheric temperature of 0

C (32

F): Approx. 8 min-

utes
• By running the vehicle
Time for temperature rise to 70

C (158

F) with at-

mospheric temperature of 0

C (32

F): More than

10 minutes
5) Method for checking fluid level upon delivery or
at periodic inspection
Check fluid level after a warm-up run of approx. 10
minutes. During the warm-up period, the automatic
transmission functions can also be checked.

(A) Level gauge

(B) Check line, HOT condition

(D) Lower level

(E) Check line, COLD condition

PI-00105

COLD

HOT

( A )

( C )

( D )

( C )

( D )

( E )

( B )

PM-29

PERIODIC MAINTENANCE SERVICES

ATF

B: REPLACEMENT

1. AUTOMATIC TRANSMISSION FLUID

1) Drain ATF (Automatic Transmission Fluid) by re-
moving drain plug after allowing the engine to cool
for 3 to 4 hours.

NOTE:
Before starting work, cool off the engine well.

2) Reinstall drain plug after draining ATF, and tight-
en it to the specified torque.

Tightening torque:

25 N·m (2.5 kgf-m, 18.1 ft-lb)

3) Pour ATF into the oil charge pipe.

Recommended fluid:

Dexron III type automatic transmission flu-
id

ATF amount:

Refill with the same amount of ATF that
was drained.

4) Check the level of the ATF. Refer to “INSPEC-
TION”.

2. ATF FILTER

NOTE:
ATF filter is maintenance free part. ATF filter needs
replacement, when it has physically damaged or
ATF leaked.
For the replacement procedures of the ATF filter:
<Ref. to AT-73, ATF Filter.>

(A) Front differential drain plug

(B) ATF drain plug

PM-00032

(B)

(A)

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