Honda CB900F Service Manual page 254

CRANKCASE/PISTON /C YLINDER
TORQ UE V ALUES
Crankcase bolt, 10 mm
9mm
8mm
6mm
Connecting rod nut
TROU BLESHOOTING
39 Nom (4.0 kqf-m, 29 Ibfoftl
27 Nom (2.8 kqf -rn, 20 lbf-ftl Apply oil to the threads
25 Nom (2.5 kqf -rn, 18 lbf-ft}
12 Nom (1.2 kqf -rn, 9 lbf-ft )
33 Nom (3.4 kqf -rn, 25 lbf-ft) Apply oil to t he t hreads
Cylinder compressio n is t oo low. or engine is hard
to start
Blown cylinder head gasket
Worn, stuck or broken piston ring
Worn or damaged cylinder or piston
Bent valve , or bent and deteriorated valve seat
Cylinder compression is too high . or eng ine overheats
or kn ocks
Carbon deposites on the cylinde r head and /or
piston crown
Piston so unds
Worn Cylinder, piston and /or piston ring
• Worn piston pin hole and piston pin
• Worn con necting rod small end
Excessive smo ke
Worn, stuck or broken pisto n ring
• Wo rn va lve stem sea l
11-2
Excessive noise
Worn connecting rod big end bearing
Bent con necting rod
Wo rn cranksha ft main journal bearing
W o rn transm ission bearing
Engine vibration
• Excessive cra nkshaft runout