Mitsubishi F9Q User Manual

F9Q ENGINE – Cylinder Head
11A-11-6
VALVE SPRING
(1) Measure the valve spring free height. If the measurement
does not meet the standard value, replace the valve
spring.
Standard value: 45.8 mm
VALVE GUIDE
(1) Measure the inner and outer diameters of the valve guide
to confirm that they are within the standard value range.
Standard value:
Inner diameter 7.00 – 7.02 mm
Outer diameter 12.03 – 12.05 mm
(2) Check that the dimension shown in the illustration meets
the standard value when the valve guide is installed in
the cylinder head.
Standard value: 80.7 – 81.4 mm
VALVE SEAT
Measure at the positions shown in the illustration.
Standard value:
Seat angle 90_
Seat width 1.8 mm
Exterior diameter intake:
Intake 36.9 mm
Exhaust 33.6 mm
TAPPET
Measure the tappet height to check that it meets the standard
value.
Standard value: 34.97 – 34.99 mm
VALVE CLEARANCE CHECK AND ADJUSTMENT
(1) The valve clearances have to be checked/adjusted in
the following sequence.
Cylinder at point of balance Cylinder being checked/
adjusted
1 4
2 3
3 2
4 1
1EN0264
Out of square
Free height
PWEE0001-A
E
Mar. 2001Mitsubishi Motors Corporation Revised
REN0189
90_
1.8 mm
Exterior diameter
REN0190
Y6087AJ
Cylinder at point
of balance
Cylinder being
checked/adjusted

Mitsubishi F9Q Specifications

General

Brand	Mitsubishi
Model	F9Q
Category	Engine
Language	English