Cylinder Compression; Cylinder Head Cover Removal - Honda VTR1000F Service Manual

CYLINDER COMPRESSION
Warm up the engine to normal operating tempera-
ture.
Stop the engine and remove the spark plug caps
and spark plugs.
Install the compression gauge into the spark plug
hole.
Shift the transmission in neutral.
Open the throttle all the way and crank the engine
with the starter motor until the gauge reading stops
rising. The maximum reading is usually reached
within 4 - 7 seconds.
COMPRESSION PRESSURE:
1,128 kPa (11.5 kgf/cm2 ,164 psi)
at 350 min- 1 (rpm)
Low compression can be caused by:
-blown cylinder head gasket
- improper valve adjustment
-va lve leakage
-worn piston ring or cylinder
High compression can be caused by:
-carbon deposits in combustion chamber or on
piston head
CYUNDERHEADCOVERREMOVAL
FRONT:
Remove the front fairing (page 2-3).
Remove the spark plug wire from the clamp.
Remove the two bolts and the oil cooler with the
bracket from the frame.
Move the oil cooler forward.
Disconnect the crankcase breather hose from the
cylinder head cover.
Remove the spark plug cap.
Remove the four cylinder head cover bolts, special
washers and the cylinder head cover.
CYLINDER HEAD/VALVE
8-3