Adjustment
NOTE:
Valves should be adjusted cold, when the cylinder
head temperature is less than 100°F (38°C).
Adjustment is the same for both intake and exhaust
valves.
Adjust valve clearance at TDC of each cylinder.
Do not rotate the engine counterclockwise. The tim-
ing belt could jump a tooth on the camshaft pulleys.
1. Remove the cylinder head covers.
NOTE: Refer to pages 6-47 (’91-’93),or (’94-’96), 6-48
(’91-’93), or (’94-’96) when installing the cylinder head cover.
FRONT:
No.6 No.5 No.4
EXHAUST
INTAKE
No.6 No.5 No.4
REAR:
No.3 No.2 No.1
INTAKE
EXHAUST
No.3 No.2 No.1
(cont’d)
CRANKSHAFT PULLEY
TDC MARK (WHITE PAINT)
POINTER ON
THE LOWER
COVER
REAR:
Number 1 PISTON at TDC
FRONT:
2. Rotate the crankshaft to set No. 1 piston at TDC.
TDC mark (white paint) on the crankshaft pulley
should align with pointer on the timing lower
cover, and TDC grooves on the camshaft pulleys
should align with timing belt cover plates.
Valve Clearance
Adjustment (cont’d)
3. Manually inspect the rocket arms for independent
operation (see page 6-7, 8 (’94-’96), 6-36, 37 (’91-’93).
4. Adjust valves on No.1 cylinder.
• Adjusting screws are on primary and secondary
rocker arms,
Intake: 0.15-0.19 mm (0.006-0.007 in)
Exhaust: 0.17-0.21 mm (0.007-0.008 in)
5. Loosen the locknut, and turn the adjustment screw
until the feeler gauge slides back and forth with a
slight amount of drag.
INTAKE:
TAPPET ADJUSTER
07MAA–PR70110
FEELER
GAUGE
TAPPET LOCKNUT
WRENCH
07MAA–PR70120
EXHAUST:
NOTE: Use a mirror to check if the special tool is
positioned on the locknut correctly.
FEELER
GAUGE
6. Tighten the locknut and check the clearance again.
Repeat adjustment if necessary.
INTAKE:
FEELER
GAUGE
LOCKNUT
7 x 0.75 mm
20 N·m (2.0 kg-m.
14 Ib-ft)
EXHAUST:
FEELER
GAUGE
LOCKNUT
7 x 0.75 mm
20 N·m (2.0 kg-m,
14 Ib-ft)
7. Rotate the crankshaft 120° clockwise (camshaft pulley
turns 60°). Check that the front intake camshaft pulley
is positioned as shown.
Repeat step 3 to step 6.
Number 4 piston at TDC:
8. Rotate the crankshaft 120° clockwise (camshaft pulley
turns 60°). Check that the front intake camshaft pulley
is positioned as shown.
Repeat step 3 to step 6.
Number 2 piston at TDC:
9. Rotate the crankshaft 120° clockwise (camshaft pulley
turns 60°). Check that the front intake camshaft pulley
is positioned as shown.
Repeat step 3 to step 6.
Number 5 piston at TDC:
10. Rotate the crankshaft 120° clockwise (camshaft pulley
turns 60°). Check that the front intake camshaft pulley
is positioned as shown.
Repeat step 3 to step 6.
Number 3 piston at TDC:
11. Rotate the crankshaft 120° clockwise (camshaft pulley
turns 60°). Check that the front intake camshaft pulley
is positioned as shown.
Repeat step 3 to step 6.
Number 6 piston at TDC: