6 - 2
COOL
RADIATOR
EAS00455
CHECKING THE RADIATOR
1. Check:
• radiator fins
Obstruction
→
Clean.
Apply compressed air to the rear of the radi-
ator.
Damage
→
Repair or replace.
NOTE:
_
Straighten any flattened fins with a thin, flat-
head screwdriver.
2. Check:
• radiator inlet hose
• radiator outlet hose
• radiator filler hose
• coolant reservoir hose
• radiator pipe assembly
Cracks/damage
→
Replace.
3. Measure:
• radiator cap opening pressure
Below the specified pressure
→
Replace
the radiator cap.
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a. Install the radiator cap tester
1
and radiator
cap tester adapter
2
to the radiator cap
3
.
b. Apply the specified pressure for ten sec-
onds and make sure there is no drop in
pressure.
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4. Check:
• radiator fan motor
Damage
→
Replace.
Malfunction
→
Check and repair.
Refer to “COOLING SYSTEM” in chapter 8.
Radiator cap opening pressure
110.0 ~ 140.0 kPa
(1.10 ~ 1.40 kg/cm
2
,
15.6 ~ 19.9 psi)
Radiator cap tester
90890-01325, YU-24460-01
Radiator cap tester adapter
90890-01352, YU-33984
Summary of Contents for 2004 YP400
Page 1: ...2004 YP400 S 5RU1 AE1 SERVICE MANUAL ...
Page 2: ......
Page 8: ......
Page 9: ...GEN INFO 1 ...
Page 11: ...GEN INFO ...
Page 28: ...SPEC 2 ...
Page 30: ...SPEC ...
Page 77: ...CHK ADJ 3 ...
Page 137: ......
Page 138: ...CHAS 4 ...
Page 210: ......
Page 211: ...ENG 5 ...
Page 286: ...COOL 6 ...
Page 288: ...COOL ...
Page 299: ...FI 7 ...
Page 301: ...FI ...
Page 342: ...ELEC 8 ...
Page 378: ...8 34 ELEC LIGHTING SYSTEM ...
Page 404: ......
Page 405: ...TRBL SHTG 9 ...
Page 415: ......
Page 416: ...YAMAHA MOTOR CO LTD 2500 SHINGAI IWATA SHIZUOKA JAPAN ...