INTAKE MANIFOLD AND REED VALVES
POWR
5-20
E
CHECKING THE REED VALVES
1. Check:
•
Reed valve
Cracks/damage
→
Replace.
2. Measure:
•
Valve bending
Out of specification
→
Replace.
3. Measure:
•
Valve stopper height
Out of specification
→
Replace.
INSTALLING THE INTAKE MANIFOLD
Install:
•
Intake manifold
NOTE:
• Tighten the intake manifold mounting
bolts in two steps of torque.
• Apply LOCTITE
®
No.572 on the bolts.
Valve bending limit
0.2 mm (0.0079 in)
Valve stopper height
25B:
1.7 - 2.3 mm (0.067 - 0.091 in)
30H:
4.5 - 5.1 mm (0.177 - 0.201 in)
T
R
.
.
Intake manifold mounting bolt
1st: 4 N
•
m (0.4 kgf
•
m, 3.0 ft
•
lb)
2nd: 8 N
•
m (0.8 kgf
•
m, 5.9 ft
•
lb)
1
a
b
Summary of Contents for 25BMH
Page 48: ...FEATURES AND BENEFITS GEN INFO 1 12 E COOLING SYSTEM Fig 7 ...
Page 49: ...1 12 CARACTERISTIQUES ET AVANTAGES GEN INFO F ...
Page 50: ...1 12 MERKMALE UND VORTEILE GEN INFO D ...
Page 51: ...1 12 CARACTERÍSTICAS Y VENTAJAS GEN INFO ES ...
Page 92: ...MAINTENANCE SPECIFICATIONS SPEC 2 8 E DIMENSIONS ...
Page 156: ...GENERAL CHK ADJ 3 26 E NOTE Grease the inner cable and the lock nut 2 Apply Yamaha grease D ...
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Page 446: ...Printed on recycled paper Printed in Japan Oct 2000 1 9 1 25BMH 30HMH YAMAHA MOTOR CO LTD ...