VALVE CLEARANCE
Valve Wrench
Special
Check the valve clearance again after
the lock nut is tightened.
3. INSPECTION/ADJUSTMENT
Cylinder Head Cover
Remove the center cover and the secondary air
inlet tube bolt.
Remove the 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.
Inspect and adjust valve clearance.
Valve Clearance:IN: 0.12 mm EX: 0.12 mm
Loosen the lock nut and adjust by turning the
adjusting nut.
Valve Wrench
CYLINDER COMPRESSION
Warm up the engine before compression test.
Remove the center cover and luggage box.
Remove the spark plug.
Insert a compression gauge.
Open the throttle fully and push the starter button
to test the compression.
Compression: 15 kg/cm - 570 rpm
If the compression is low, check for the following:
‧Leaky valves
‧Valve clearance too small
‧Leaking cylinder head gasket
‧Worn piston rings
‧Worn piston/cylinder
If the compression is high, it indicates that carbon
deposits have accumulated on the combustion
chamber and the piston head.
Feeler Gauge
22
Bolts
Inspect and adjust valve clearance while
the engine is cold (below 35 C).
Round Hole(TDC mark)
Movie S 125i
To Next Page
Loading...
