Water Hose Routing Diagram; Diagnostic Information And Procedures; Engine Cooling Symptom Diagnosis - Suzuki RMX450Z Service Manual

1F-3 Engine Cooling System:

Water Hose Routing Diagram

"C"
" a "
"B"
4
1. Reservoir tank
2. Reservoir tank inlet hose
3. Clamp
: Bind the reservoir tank inlet hose and magneto lead
wire to the front engine mounting bracket (LH) with
the clamp.
4. Put out the end of reservoir tank overflow hose from
the protector.
5. Cushion
: Stick the cushions on the reservoir tank along the
lines on the surface.

Engine Cooling Symptom Diagnosis

Condition
Engine overheats
Engine over cools
"A"
"C"
"B"
"D"
"A": Face the hose clamp end forward.
"B": Face the screw head to the right side.
"C": Face the screw head backward.
"D": Blue marking
"E": Face the screw head to the left side.

Diagnostic Information and Procedures

Possible cause
Not enough engine coolant.
Radiator core clogged with dirt or scale. Clean.
Clogged engine coolant passage.
Air trapped in the cooling circuit.
Defective water pump.
Use of incorrect engine coolant.
Defective ECT sensor.
Defective ECM.
Extremely cold weather.
Defective ECT sensor.
Defective ECM.
(a)
"E"
"F"
"D"
"C"
3
Correction / Reference Item
Add engine coolant.
Clean.
Bleed air.
Replace.
Replace.
Replace.
Replace.
Put on radiator cover.
Replace.
Replace.
BA02J21602002
"F"
2
1
5
"H"
IA02J1160033-04
"F": White marking
"G": Face the screw head forward.
"H": Face the clamp end backward.
"a": 39°
: 6 N⋅m (0.6 kgf-m, 4.5 lbf-ft)
BA02J21604001
"G"
4