3. INSPECTION/ADJUSTMENT DOWNTOWN 125i
Adjust by loosening the valve adjusting screw
lock-nut and turning the adjusting screw
until there is a slight drag on the thickness
gauge .
Valve Clearance: IN: 0.1 mm
EX:0.1 mm
Apply oil to the valve adjusting screw lock-
nut threads and seating surface.
Hold the adjusting screw and tighten the lock
nut to the specified torque.
Torque: 0.9 kgf-m (9 N-m)
Special tool:
Valve adjuster A120E00036
After tightening the lock-nut, recheck the
valve clearance.
Install the removed parts in the reverse order
of removal.
IDLE SPEED
It is not necessary to adjust idle speed
for DOWNTOWN125i. The throttle
body is factory preset originally, do not
loosen or tighten the painted bolts and
screws of throttle body. Loosening or
tightening them can cause throttle a idle
and valve with failure.
Warm up the engine before this operation.
Start the engine and connect a tachometer.
Turn the throttle stop screw (1) to obtain the
specified idle speed.
Idle Speed:
DINK 125: 1700 rpm
DOWNTOWN125i: 1850 rpm
When the engine misses or run erratic, adjust
the pilot screw (2).
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