Takeuchi TB 175 Handbuch Seite 755

2. Inspection and adjustment
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.
Model Standard valve clearance
3TNV82A to 98
4TNV106 (T)
[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.
mm
0.15 to 0.25
0.25 to 0.35
Adjusting bolt
Rock nut
Adjust
clearance
to 0
4-Valve cylinder head
Valve clearance adjustment
Valve
bridge
4 Valve cylinder head
42
Hold
Valve bridge
Clearance 0
Tighten
Adjusting
bolt
Tighten
Wrench