Yamaha RS90K, Service Manual

Page: 52 / 841

2-6
INSP
ADJ
COOLING SYSTEM
14. Inspect:
• Cooling system
Decrease of pressure (leaks)
→
Repair as
required.
Inspection steps:
• Attach the cooling system tester 1 and adapter
2
to the coolant filler
3
.
• Apply 100 kPa (1.0 kg/cm
2
, 14 psi).
• Measure the pressure with the gauge.
Cooling system tester:
90890-01325, YU-24460-01
Adapter:
90890-01352, YU-33984
1
2
3
Air bleeding
1. Remove:
• Rear bumper cover 1
2. Bleed air from the cooling system.
1
Air bleeding steps:
• Lift up the tail of the machine.
• Remove the bleed bolt
1 on the heat
exchanger.
• While slowly adding coolant to the coolant filler,
drain the coolant until no more air bubbles
appear.
• Tighten the bleed bolt
1
.
• Add coolant to the coolant cold level
a
.
T
R
.
.
Bleed bolt:
13 Nm (1.3 m · kg, 9.4 ft · lb)
1