Cylinder Compression; Cylinder Head Cover Removal/Disassembly - Honda MUV700 big red Service Manual

CYLINDER HEADIV ALVE/CAMSHAFT
CYLINDER COMPRESSION
Warm up the engine to normal operating tempera-
ture.
Stop the engine, disconnect the spark plug cap and
remove the spark plug (page 4-8).
Install the compression gauge into the spark plug
hole.
TOOLS :
Compression tester
Adaptor
EEPV303A
MT26J200
(U.S.A. only)
Shift the transmission in neutra1.
Open the throttle all the way and crank the engine
with the starter motor untit the gauge reading stops
rising. The maximum reading is usually reached
within 4 - 7 seconds.
COMPRESSION PRESSURE:
550 kPa (5.6
kgflcm~.
80 psi) at 350 rpm (min"' )
Check that there is no leakage at the gauge connec-
tion.
low compression can be caused by:
- blown cylinder head gasket
- improper valve adjustment
- valve leakage
- worn piston ring or cylinder
High compression can be caused by:
- carbon deposits in combustion chamber or on
piston head
CYLINDER HEAD COVER REMOVAL!
DISASSEMBLY
9-6
REMOVAL
If you plan to remove the cylinder head remove the
following .
- throttle body (page 6-45)
- ex haust system (page 3-25)
Remove the following:
- parking brake lever bracket (page 3-7)
- crossbar (page 3-8)
- upper engine hanger bracket bolts
- upper engine hanger nut and bolt
- hanger bracket and mounting rubbers