Depending on the length of time the power was interrupted, your system may require GPS initialization.

If initialization is not necessary, the system proceeds directly to the Startup Confirmation screen.
If the system fails to locate a sufficient number of satellites to locate your position within 10 minutes, the following screen is displayed.

If you are experiencing GPS reception problems:
Rocker Arm Assembly Removal
Remove the cylinder head cover.
Loosen the rocker arm adjusting screws (A).
Unscrew the rocker shaft mounting bolts two turns at a time in the
sequence shown.
...
Steering Gearbox Removal and Installation
Special Tools Required
Ball Joint Thread Protector, 14 mm 071AF-S3VA000
Ball Joint Thread Protector, 10 mm 07AAF-SECA120
Universal Lifting Eyelet 07AAK-SNAA120
1.8 Support Bolt 07AAK-SNAA500 ...
Recommended Engine Oil
• Genuine Honda Motor Oil
• Premium-grade 0W-20 detergent oil with an API Certification Seal on the
container.
Oil is a major contributor to your engine’s
performance and longevity. If you ...