3. INSPECTION/ADJUSTMENT PEOPLE 250
Cylinder Head Cover Upper Bolts
VALVE CLEARANCE
· Inspect and adjust valve clearance
while the engine is cold (below 35).
Remove the met-in box and center cover.
Disconnect oil vapor recovery tube and
secondary air cleaner fresh air outlet hose
from cylinder head cover.
Remove two lower bolts and two nuts on the
cylinder head cover.
Place the scooter on its side stand and load a Lower Bolts Nuts
person on the rear carrier for remove the two
upper bolts on the cylinder head cover and Index Mark
remove cylinder head cover.
Turn the A.C. generator flywheel to the top
dead center (TDC) on the compression stroke
so that the "T" mark on the flywheel aligns
with the index mark on the left crankcase
cover.
"T" Mark Top Dead Center Mark
Feeler Gauge
Inspect and adjust valve clearance.
Valve Clearance: IN: 0.1mm
EX: 0.1mm
Loosen the lock nut and adjust by turning the
adjusting nut
Special
Valve Adjuster E036
· Check the valve clearance again after
the lock nut is tightened.
CARBURETOR IDLE SPEED Throttle Stop Screw
· The engine must be warm for accurate
idle speed inspection and adjustment.
Lift up the seat and remove the inspection
cover.
Warm up the engine before this operation.
Start the engine and connect a tachometer.
Turn the throttle stop screw to obtain the
specified idle speed.
Idle Speed: 1700100rpm
When the engine misses or run erratic, adjust
the pilot screw. Pilot Screw
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