Disassembling The Crankcase; Checking The Crankcase; Assembling The Crankcase - Yamaha R1 Series 2015 Service Manual

EAS30389

DISASSEMBLING THE CRANKCASE

1. Place the engine upside down.
2. Remove:
• Crankcase bolt ( 40)
TIP
• Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
• Loosen the bolts in the proper sequence as
shown.
• The numbers embossed on the crankcase in-
dicate the crankcase tightening sequence.
20
10
26 9
24
23
25
11
34
36
12
37
31
13 15
14
3
1
2 4
3. Remove:
• Lower crankcase
ECA13900
NOTICE
Tap on one side of the crankcase with a soft-
face hammer. Tap only on reinforced por-
tions of the crankcase, not on the crankcase
mating surfaces. Work slowly and carefully
and make sure the crankcase halves sepa-
rate evenly.
4. Remove:
• Dowel pins
5. Remove:
• Crankshaft journal lower bearing
• Balancer shaft journal bearing
(from the lower crankcase)
TIP
Identify the position of each part very carefully so
that it can be reinstalled in its original place.
7
8
28
30
18
27 6
29
38 32
40
39 35 33
19
17
16
22
21
5
EAS30390

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
• Oil delivery passages
Obstruction
EAS30397

ASSEMBLING THE CRANKCASE

1. Lubricate:
• Crankshaft journal bearing inner surface
(with the recommended lubricant)
Recommended lubricant
2. Apply:
• Sealant
(onto the crankcase mating surfaces)
Yamaha bond No. 1215
TIP
Do not allow any sealant to come into contact
with the oil gallery or crankshaft journal bear-
ings, or balancer shaft journal bearings.
40
3. Install:
• Dowel pins
5-67
CRANKCASE
Replace.
Blow out with compressed air.
Engine oil
90890-85505
(Three bond No.1215®)