Power Unit Cooling System: 1F-3
Diagnostic Information and Procedures
Powerhead Cooling System Diagnosis
Z9J0111604001
Service Instructions
Thermostat Removal and Installation
Z9J0111606001
Removal
1) Remove the ring gear cover.
Refer to “Ring Gear Cover Removal and Installation”
in Section 1D (Page 1D-2).
2) Loosen the clip (1) and remove the water return
hose (2) from thermostat cover (3).
3) Remove the two bolts (4) securing the thermostat
cover (3), then remove the cover with thermostat.
4) Remove the thermostat (5) and cover seal (6) from
thermostat cover.
Installation
Installation is reverse order of removal with special
attention to the following steps.
• Assemble thermostat (1), cover seal (2) and
thermostat cover (3).
Condition Possible cause Correction / Reference Item
Overheating powerhead Water inlet screen obstructed. Clean.
Water passage obstructed. Clean or replace.
Pump plate not sealing. Check and repair.
Water pump impeller damage. Replace.
Water pump housing and/or plate worn. Replace.
Water pump housing seal worn. Replace.
Water tube grommet damaged. Replace.
Thermostat damaged / defective. Replace.
Water pressure valve damaged /
defective.
Replace.
Overcooling powerhead Thermostat damaged / defective. Replace.
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I9J011160005-01
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I9J011160006-01
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I9J011160007-01
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I9J011160008-01
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