Mitsubishi S4S Service Manual page 89

(7)
Inspecting valve timing
It is not necessary to inspeet the valve timing,
provided that all match marks on the timing gears
are aligned. Inspeet the timing for verification as
explained below:
(a) Using a 3 mm [0.12 in.] thick smooth steel
plate, add 3 mm [0.12 in.] clearance to the
inlet and exhaust valves of the No.l cylinder.
ENGINE MAIN PARTS
Exhaust valve
t
Rotatien
Bottom dead center
Valve timing diagram (direct injection type)
Valve timing diagram with 3 mm [0.12 in.] clearance
added (direct injetion type)
(b) Put a 0.05 mm [0.0020 in.] feeler gage
between the top of the valve cap and the
rocker.
(c) Slowly turn the crankshaft to find a position
where the feeler gage is firmly gripped (the
valve starts opening) and a position where the
gage is just ungripped (the valve starts
closing).
(d) Check to make surethese positions agree with
the angular positions shown in the valve
timing diagram with 3 mm [0.12 in.] clearance
added to the valves.
Exhaust valve
t
Rotatien
Bottom dead center
Inlet valve
Rotatien
Exhaust valve
500
74°
Bottom dead center
Valve timing diagram (swirl chamber type)
Rotation
Inlet valve
Bottom dead center
Valve timing diagram with 3 mm [0.12 in.] clearance
added (swirl chamber type)
7-27