Takeuchi TB 175 Handbuch Seite 754

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 cylin-
ders in the order of ignition by turning the crankshaft 240° each time.
The adjustment method of reducing the flywheel turning numbers (for reference):
For 3 cylinder engines
Set No.1 cylinder to the compression T.D.C.and adjust the clearance of the
Next, turn the flywheel once (the suction / exhaust valve of No.1 cylinder is in the position of the overlap
T.D.C. at this time), and adjust the clearance of the
Ignition order of 3 cylinder engines: 1 3 2
Cylinder No.
Valve Suction Exhaust Suction Exhaust Suction Exhaust
No.1
compression
T.D.C
No.1
overlap
T.D.C
For 4 cylinder engines
Set No.1 cylinder to the compression T.D.C. and adjust the clearance of the
Next, turn the flywheel once, and adjust the clearance of the
Ignition order of 4 cylinder engines: 1 3 4 2
Cylinder No.
Valve Suction Exhaust Suction Exhaust Suction Exhaust Suction Exhaust
No.1
compression
T.D.C
No.4
compression
T.D.C
(b)Valve clearance inspection and adjustment
1) Loosen adjusting bolts
In case of 2-valve cylinder head loosen the lock
nut and adjusting screw, and check the valve for
any inclination of valve cap, entrance of dirt or
wear.
In case of 4-valve cylinder head loosen the lock
nut and adjusting screw of rocker arm. Be careful
that excessive tension isn't applied to the valve
bridge, and loosen a locknut of valve bridge.
[NOTICE]
When loosening a locknut of a valve bridge, loosen
the locknut while fixing the valve bridge with a
wrench so that the valve may not lean.
1 2
1 2
mark.
3
mark.
3
Normal
Valve
bridge
4 Valve cylinder head
41
2. Inspection and adjustment
mark of the below table.
The first time
The second time
mark of the bottom table.
4
The first
time
The
second
time
Valve cap
Abnormal
Loosen
Adjusting
bolt
Loosen
Wrench
(R.1)