1999 SUBARU LEGACY Service Repair Manual

(1) Set arrow mark on camshaft sprocket to
position shown in figure, and measure #2 cylin-
der exhaust valve and #3 cylinder intake valve
clearances.
B2M1235A
(2) Set arrow mark on camshaft sprocket to
position shown in figure, and measure #2 cylin-
der intake valve and #4 cylinder exhaust valve
clearances.
B2M1236A
(3) Set arrow mark on camshaft sprocket to
position shown in figure, and measure #1 cylin-
der exhaust valve and #4 cylinder intake valve
clearances.
B2M1237A
15) After inspection, install the related parts in the
reverse order of removal.
B: ADJUSTMENT
1. 2200 cc MODEL
CAUTION:
Adjustment of valve clearance should be per-
formed while engine is cold.
1) Set #1 cylinder piston to top dead center of
compression stroke by rotating crankshaft pulley
clockwise.
NOTE:
When arrow mark on camshaft sprocket (LH)
comes exactly to the top, #1 cylinder piston is
brought to the top dead center of the compression
stroke.
B2M2027A
13
[W7B1]2-2SERVICE PROCEDURE
7. Valve Clearance

2) Adjust the #1 cylinder valve clearance.
(1) Loosen the valve rocker nut and screw.
(2) Place suitable thickness gauge.
(3) While noting valve clearance, tighten valve
rocker adjust screw.
(4) When specified valve clearance is obtained,
tighten valve rocker nut.
Tightening torque:
10
±1 N´m (1.0±0.1 kg-m, 7.2±0.7 ft-lb)
CAUTION:
IInsert the thickness gauge in at as horizon-
tal a direction as possible with respect to the
valve stem end face.
IAdjust exhaust valve clearances while lift-
ing-up the vehicle.
Valve clearance:
Intake: 0.20
±0.02 mm (0.0079±0.0008 in)
Exhaust: 0.25
±0.02 mm (0.0098±0.0008 in)
B2M2030A
(a) Thickness gauge
(b) Valve rocker nut
(c) Valve rocker screw
3) Ensure that valve clearances are within speci-
fications.
4) Turn crankshaft two complete rotations until #1
cylinder piston is again set to top dead center on
compression stroke.
5) Ensure that valve clearances are within speci-
fications. If necessary, re-adjust valve clearances.6) Similar to adjustment procedures used for #1
cylinder, adjust #2, #3 and #4 cylinder valve clear-
ances.
NOTE:
IBe sure to set cylinder pistons to their respective
top dead centers on the compression stroke before
adjusting valve clearances.
ITo set #3, #2 and #4 cylinder pistons to their top
dead centers on the compression stroke, turn
crankshaft pulley clockwise 90É at a time starting
with arrow mark on left-hand camshaft sprocket
facing up.
B2M2029A
2. 2500 cc MODEL
CAUTION:
Adjustment of valve clearance should be per-
formed while engine is cold.
1) Measure all valve clearances. [W7A2].>
NOTE:
Record each valve clearance after it has been
measured.
B2M1234A
14
2-2[W7B2]SERVICE PROCEDURE
7. Valve Clearance

2) Remove shim of intake side.
(1) Prepare the ST.
ST 498187100 SHIM REPLACER KIT
H1H0491
(2) Rotate the notch of the valve lifter outward
by 45É.
H2M1771A
(3) Set REPLACER No. 1 (A) to intake cam-
shaft.
H2M1772B
(4) Set REPLACER No. 2 (B).
H2M1773B
(5) Set REPLACER No. 3 (C) to hole of
REPLACER No. 1.
H2M1774B
(6) Rotate REPLACER No. 3 (C) until
REPLACER No. 2 (B) pushes away valve lifter.
H2M1775B
(7) Insert tweezers into the notch of the valve
lifter, and take the shim out.
H2M1776A
3) Remove shim of exhaust side.
(1) Prepare the ST.
ST 498187100 SHIM REPLACER KIT
H1H0491
15
[W7B2]2-2SERVICE PROCEDURE
7. Valve Clearance

(2) Rotate the notch of the valve lifter outward
by 45É.
H2M1777A
(3) Set REPLACER No. 1 (A) to exhaust cam-
shaft.
H2M1778B
(4) Set REPLACER No. 2 (B).
H2M1779B
(5) Set REPLACER No. 3 (C) to hole of
REPLACER No. 1.
H2M1780B
(6) Rotate REPLACER No. 3 until REPLACER
No. 2 pushes away valve lifter.
H2M1781
(7) Insert tweezers into the notch of the valve
lifter, and take the shim out.
NOTE:
By using a magnet, the shim can be taken out
without dropping it.
H2M1782A
4) Measure thickness of shim with micrometer.
B2M1240A
16
2-2[W7B2]SERVICE PROCEDURE
7. Valve Clearance

5) Select a shim of suitable thickness using measured valve clearance and shim thickness, using the fol-
lowing table.
Intake valve (mm):S=(V+T)þ0.20
Exhaust valve (mm):S=(V+T)þ0.25
S: Shim thickness to be used
V: Measured valve clearance
T: Shim thickness required
Part No. Thickness mm (in) Part No. Thickness mm (in)
13218AC230 2.22 (0.0874) 13218AC480 2.52 (0.0992)
13218AE000 2.23 (0.0878) 13218AC490 2.53 (0.0996)
13218AC240 2.24 (0.0882) 13218AC500 2.54 (0.1000)
13218AE010 2.25 (0.0886) 13218AC510 2.55 (0.1004)
13218AC250 2.26 (0.0890) 13218AC520 2.56 (0.1008)
13218AE020 2.27 (0.0894) 13218AC530 2.57 (0.1012)
13218AC260 2.28 (0.0898) 13218AC540 2.58 (0.1016)
13218AE030 2.29 (0.0902) 13218AC550 2.59 (0.1020)
13218AC270 2.30 (0.0906) 13218AC560 2.60 (0.1024)
13218AE040 2.31 (0.0909) 13218AC570 2.61 (0.1028)
13218AC280 2.32 (0.0913) 13218AC580 2.62 (0.1031)
13218AC290 2.33 (0.0917) 13218AC590 2.63 (0.1035)
13218AC300 2.34 (0.0921) 13218AC600 2.64 (0.1039)
13218AC310 2.35 (0.0925) 13218AC610 2.65 (0.1043)
13218AC320 2.36 (0.0929) 13218AC620 2.66 (0.1047)
13218AC330 2.37 (0.0933) 13218AC630 2.67 (0.1051)
13218AC340 2.38 (0.0937) 13218AC640 2.68 (0.1055)
13218AC350 2.39 (0.0941) 13218AC650 2.69 (0.1059)
13218AC360 2.40 (0.0945) 13218AC660 2.70 (0.1063)
13218AC370 2.41 (0.0949) 13218AE050 2.71 (0.1067)
13218AC380 2.42 (0.0953) 13218AC670 2.72 (0.1071)
13218AC390 2.43 (0.0957) 13218AE060 2.73 (0.1075)
13218AC400 2.44 (0.0961) 13218AC680 2.74 (0.1079)
13218AC410 2.45 (0.0965) 13218AE070 2.75 (0.1083)
13218AC420 2.46 (0.0969) 13218AC690 2.76 (0.1087)
13218AC430 2.47 (0.0972) 13218AE080 2.77 (0.1091)
13218AC440 2.48 (0.0976) 13218AC700 2.78 (0.1094)
13218AC450 2.49 (0.0980) 13218AE090 2.79 (0.1098)
13218AC460 2.50 (0.0984) 13218AC710 2.80 (0.1102)
13218AC470 2.51 (0.0988) 13218AE100 2.81 (0.1106)
6) Set suitable shim selected in one step before,
to valve lifter.
17
[W7B2]2-2SERVICE PROCEDURE
7. Valve Clearance

7) Turn crankshaft pulley clockwise until arrow
mark on camshaft sprocket is set to position shown
in figure.
B2M1233A
8) Ensure that #1 cylinder intake valve and #3 cyl-
inder exhaust valve are adjusted to specifications.
CAUTION:
IInsert the thickness gauge in as horizontal a
direction as possible with respect to the shim.
IAdjust exhaust valve clearances while lift-
ing-up the vehicle.
Valve clearance:
Intake: 0.20
±0.02 mm (0.0079±0.0008 in)
Exhaust: 0.25
±0.02 mm (0.0098±0.0008 in)
B2M1234A
9) Turn crankshaft two complete rotations. Check
again to ensure that #1 cylinder intake valve and
#3 cylinder exhaust valve clearances are within
specifications. If necessary, re-adjust valve clear-
ances.
10) Further turn crankshaft pulley clockwise.
Using the same procedures as in two steps before,
measure valve clearances.(1) Set arrow mark on camshaft sprocket to
position shown in figure, and check #2 cylinder
exhaust valve and #3 cylinder intake valve
clearances.
B2M1235A
(2) Set arrow mark on camshaft sprocket to
position shown in figure, and check #2 cylinder
intake valve and #4 cylinder exhaust valve
clearances.
B2M1236A
(3) Set arrow mark on camshaft sprocket to
position shown in figure, and check #1 cylinder
exhaust valve and #4 cylinder intake valve
clearances.
B2M1237A
18
2-2[W7B2]SERVICE PROCEDURE
7. Valve Clearance

1. Engine
A: SPECIFICATIONS
EngineModel2200 cc
TypeHorizontally opposed, liquid cooled, 4-cylinder, 4-stroke
gasoline engine
Valve arrangement Belt driven, single over-head camshaft, 4-valve/cylinder
Bore´Stroke mm (in) 96.9´75.0 (3.815´2.953)
Displacement cm
3(cu in) 2,212 (135.0)
Compression ratio 9.7
Compression pressure
(at 200 Ð 300 rpm)kPa (kg/cm
2, psi) 1,079 Ð 1,275 (11.0 Ð 13.0, 156 Ð 185)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timingOpening 4É BTDC
Closing 52É ABDC
Exhaust valve timingOpening 48É BBDC
Closing 12É ATDC
Valve clearanceIntake mm (in) 0.20±0.02 (0.0079±0.0008)
Exhaust mm (in) 0.25±0.02 (0.0098±0.0008)
Idling speed
[At neutral position on MT, or ªPº or
ªNº position on AT]rpm700±100 (No load)
850±50 (A/C switch ON)
Firing order 1®3®2®4
Ignition timing BTDC/rpm 14ɱ8É/700 (MT), 20ɱ8É/700 (AT)
B: SERVICE DATA
NOTE:
STD: Standard, I.D.: Inner Diameter, O.D.: Outer Diameter, OS: Oversize, US: Undersize
Belt ten-
sioner
adjusterProtrusion of adjuster rod 5.2 Ð 6.2 mm (0.205 Ð 0.244 in)
Belt ten-
sionerSpacer O.D. 17.955 Ð 17.975 mm (0.7069 Ð 0.7077 in)
Tensioner bush I.D. 18.00 Ð 18.08 mm (0.7087 Ð 0.7118 in)
Clearance between spacer and bushSTD 0.025 Ð 0.125 mm (0.0010 Ð 0.0049 in)
Limit 0.175 mm (0.0069 in)
Side clearance of spacerSTD 0.2 Ð 0.55 mm (0.0079 Ð 0.0217 in)
Limit 0.81 mm (0.0319 in)
Valve
rocker
armClearance between shaft and armSTD 0.020 Ð 0.054 mm (0.0008 Ð 0.0021 in)
Limit 0.10 mm (0.0039 in)
Cam-
shaftBend limit 0.020 mm (0.0008 in)
Thrust clearanceSTD 0.030 Ð 0.090 mm (0.0012 Ð 0.0035 in)
Limit 0.11 mm (0.0043 in)
Cam lobe heightIntakeSTD 34.00 Ð 38.782 mm (1.3386 Ð 1.5268 in)
Limit 33.84 mm (1.3323 in)
ExhaustSTD 34.00 Ð 39.307 mm (1.3386 Ð 1.5475 in)
Limit 33.84 mm (1.3323 in)
Camshaft journal O.D. 31.928 Ð 31.945 mm (1.2570 Ð 1.2577 in)
Camshaft journal hole I.D. 32.000 Ð 32.018 mm (1.2598Ð 1.2605 in)
Oil clearanceSTD 0.055 Ð 0.090 mm (0.0022 Ð 0.0035 in)
Limit 0.118 mm (0.0046 in)
2
2-3a[S1A0]SPECIFICATIONS AND SERVICE DATA
1. Engine

Cylinder
headSurface warpage limit 0.05 mm (0.0020 in)
Surface grinding limit 0.3 mm (0.012 in)
Standard height 97.5 mm (3.839 in)
Valve
setRefacing angle 90É
Contacting widthIntakeSTD 1.0 mm (0.039 in)
Limit 1.7 mm (0.067 in)
ExhaustSTD 1.4 mm (0.055 in)
Limit 2.1 mm (0.083 in)
Valve
guideInner diameter 6.000 Ð 6.012 mm (0.2362 Ð 0.2367 in)
Protrusion above headIntake 20.0 Ð 20.5 mm (0.787 Ð 0.807 in)
Exhaust 16.5 Ð 17.0 mm (0.650 Ð 0.669 in)
ValveHead edge thicknessIntakeSTD 1.0 mm (0.039 in)
Limit 0.6 mm (0.024 in)
ExhaustSTD 1.2 mm (0.047 in)
Limit 0.6 mm (0.024 in)
Stem diameterIntake 5.945 Ð 5.960 mm (0.2341 Ð 0.2346 in)
Exhaust 5.950 Ð 5.965 mm (0.2343 Ð 0.2348 in)
Stem oil clearanceSTDIntake 0.035 Ð 0.062 mm (0.0014 Ð 0.0024 in)
Exhaust 0.040 Ð 0.067 mm (0.0016 Ð 0.0026 in)
Limit Ð 0.15 mm (0.0059 in)
Overall lengthIntake 120.6 mm (4.75 in)
Exhaust 121.7 mm (4.79 in)
Valve
springFree length 54.30 mm (2.1378 in)
Squareness 2.5É, 2.4 mm (0.094 in)
Tension/spring height214.8 Ð 246.2 N
(21.9 Ð 25.1 kg, 48.3 Ð 55.3 lb)/45.0 mm (1.772 in)
526.6 Ð 581.6 N
(53.7 Ð 59.3 kg, 118.4 Ð 130.8 lb)/34.7 mm (1.366 in)
Cylinder
blockSurface warpage limit (mating with cylinder head) 0.05 mm (0.0020 in)
Surface grinding limit 0.1 mm (0.004 in)
Cylinder bore STDA 96.905 Ð 96.915 mm (3.8151 Ð 3.8155 in)
B 96.895 Ð 96.905 mm (3.8148 Ð 3.8151 in)
TaperSTD 0.015 mm (0.0006 in)
Limit 0.050 mm (0.0020 in)
Out-of-roundnessSTD 0.010 mm (0.0004 in)
Limit 0.050 mm (0.0020 in)
Piston clearanceSTD 0.010 Ð 0.030 mm (0.0004 Ð 0.0012 in)
Limit 0.050 mm (0.0020 in)
Enlarging (boring) limit 0.5 mm (0.020 in)
Piston Outer diameterSTDA 96.885 Ð 96.895 mm (3.8144 Ð 3.8148 in)
B 96.875 Ð 96.885 mm (3.8140 Ð 3.8144 in)
0.25 mm (0.0098
in) OS97.125 Ð 97.135 mm (3.8238 Ð 3.8242 in)
0.50 mm (0.0197
in) OS97.375 Ð 97.385 mm (3.8337 Ð 3.8340 in)
Piston
pinStandard clearance between piston
pin and hole in pistonSTD 0.004 Ð 0.008 mm (0.0002 Ð 0.0003 in)
Limit 0.020 mm (0.0008 in)
Degree of fitPiston pin must be fitted into position with thumb at 20ÉC
(68ÉF).
3
[S1B0]2-3aSPECIFICATIONS AND SERVICE DATA
1. Engine