Follow these instructions to keep the ATF cooler cleaner working properly:
Replace the two magnetic nonbypass spin-on filters after every 20 hours of use, based on the hour meter, or when you notice a restriction in the ATF flow.
Check the level and condition of the fluid in the tank before each use.
Replace the ATF in the tank when it looks dark or dirty.

Shift Solenoid Valve Removal and Installation (A/T)
NOTE: Do not hold the solenoid valve connector to remove and install the
solenoid valve. Be sure to hold the solenoid valve body.
Remove the mounting bolts, then remove the solenoid valves by ...
VIN, Engine, (Motor), Transmission Numbers, and Paint Codes
Vehicle Identification Number
a.
Manufacturer, Make, and Type of Vehicle
JHM:
Honda Motor Co., Ltd.
Honda passe ...
Cylinder Head Inspection for Warpage
Remove the cylinder head.
Inspect the camshaft.
Check the cylinder head for warpage. Measure along the edges, and three
ways across the center:
If wa ...