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Push the bridge head so that a valve bridge and
two valve stem heads may contact each other
uniformly, and adjust an adjusting bolt so that a
gap of the valve stem head may become 0.
Tighten a locknut after a valve bridge is fixed with
a wrench.
2) Measuring valve clearance
Insert a 0.2 or 0.3 mm thickness gage between
the rocker arm and valve cap / valve bridge, and
adjust the valve clearance. Tighten the adjusting
screw.
mm
Model
Standard valve clearance
3IRH2N 8N
0.15 0.25
4IRI8T
0.25 0.35
[NOTICE]
When tightening a valve bridge locknut of 4-valve
head, tighten a locknut after fixing a valve bridge
with a wrench so that a bridge may not rotate and a
valve may not lean.
3) Apply oil to the contact surface between adjusting
screw and push rod.
4) Adjusting other cylinders
In case of 4-cylinder engines turn the crankshaft 180°
then and make adjustment for the No.3 cylinder. Then
adjust the No.4 and No.2 cylinders in this order.
The cylinder to be adjusted first does not have to be the
No.1 cylinder. Select and adjust the cylinder where the
piston is the nearest to the top dead center after turning,
and make adjustment for other cylinders in the order of
ignition by turning the crankshaft 180° each time.
In case of 3-cylinder engines turn the crankshaft 240° then
and make adjustment for the No.3 cylinder. Then adjust the
No.2 cylinder in this order.
The cylinder to be adjusted first does not have to be the No.1
cylinder. Select and adjust the cylinder where the piston is
the nearest to the top dead center after turning, and make
adjustment for other cylinders in the order of ignition by
turning the crankshaft 240° each time.
