Valve Clearance - Honda CBR125R Owner's Manual

VALVE CLEARANCE

INSPECTION
• Inspect and adjust the valve clearance while the
engine is cold (below 35°C/95°F).
• After the valve clearance inspection, check the
engine idle speed (page 5-62).
• Inspect and adjust the valve clearance can be ser-
viced with the engine installed in the frame.
Remove the cylinder head cover (page 8-6).
Remove the timing hole cap and crankshaft hole
cap.
TOOL:
Timing cap wrench
Rotate the crankshaft counterclockwise and align
the "T" mark on the flywheel with the index notch
on the left crankcase cover.
The index line on the cam sprocket must be flush
with the cylinder head surface as shown.
Make sure the piston is at TDC (Top Dead Center) on
the compression stroke.
This position can be obtained by confirming that
there is slack in the rocker arm. If there is no slack, it
is because the piston is moving through the exhaust
stroke to TDC. Rotate the crankshaft one full turn
and match up the "T" mark again.
TIMING HOLE CAP
07709-0010001
or equivalent
CRANKSHAFT HOLE CAP
INDEX NOTCH
INDEX LINE
MAINTENANCE
"T" MARK
ROCKER ARMS
3-11