Yamaha 1998 FZS600 5DM1-AE1, Service Manual

Page: 168 / 364

4-56
A
B
CRANKCASE
ENG
NOTE:
CAUTION:
NOTE:
EB412100
DISASSEMBLING THE CRANKCASE
1. Remove:
crankcase bolts 1
15
A Upper crankcase
Loosen each bolt 1 / 4 of a turn at a time, in
stages and in a crisscross pattern. After all
of the bolts are fully loosened, remove
them.
Loosen the bolts in decreasing numerical
order (refer to the numbers in the illustra-
tion).
The numbers embossed on the crankcase
indicate the crankcase tightening se-
quence.
2. Place the engine upside down.
3. Remove:
lower crankcase bolts 1 20
B lower crankcase
4. Remove:
lower crankcase
Tap on one side of the crankcase with a
soft-face hammer. Tap only on reinforced
portions of the crankcase, not on the
crankcase mating surfaces. Work slowly
and carefully and make sure that the
crankcase halves separate evenly.
5. Remove:
dowel pins
oil jet
6. Remove:
crankshaft journal lower bearing
(from the lower crankcase)
Identify the position of each crankshaft jour-
nal lower bearing so that it can be reinstalled
in its original place.
EB412420
CHECKING THE CRANKCASE
1. Thoroughly wash the crankcase halves in a
mild solvent.
2. Thoroughly clean all the gasket surfaces
and crankcase mating surfaces.
3. Check:
crankcase
Cracks / damage
Replace.
oil delivery passages
Obstruction
Blow out with compressed
air.