Hot Engine Operations
14. (22R–E ENGINE)
ADJUST VALVE CLEARANCE
(a) Warm up the engine to normal operating temperature.
(b) Stop the engine and remove the cylinder head cover.
(c) Set No.1 cylinder to TDC/compression.
• Turn the crankshaft with a wrench to align the
timing marks at TDC. Set the groove on the pulley
to the ”O” position.
• Check that the rocker arms on No.1 cylinder are
loose and rocker arms on No.4 cylinder are tight.
If not, turn the crankshaft one complete revolution
and align marks as above.
(e) Turn the crankshaft one complete revolution (360 )
and align timing marks in the manner mentioned
above. Adjust only the valves indicated by arrows.
(f) Reinstall the cylinder head cover.
16. ADJUST IDLE SPEED
(a) Preparation
• Install air cleaner
• Connect all pipes and hoses of air intake system
Use a thickness gauge to measure between the
valve stem and rocker arm. Loosen the lock nut
and turn the adjusting screw to set the proper
clearance. Hold the adjusting screw in position,
and tighten the lock nut.
Recheck the clearance. The thickness– gauge
should move with a very slight drag.
(d) Adjust the clearance of half of the valves.
• Adjust only the valves indicated by arrows.
Valve clearance:
Intake 0.20 mm (0.008 in.)
Exhaust 0.30 mm (0.012 in.)
–MAINTENANCE MAINTENANCE OPERATIONS
MA–11
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