You need to know the frame and engine serial numbers to get title documents for your motorcycle.
You also need these numbers to help your dealer when you order parts.

The frame number 1 is stamped on the steering head as shown in the illustration. The engine serial number 2 Is stamped on the crankcase assembly.
Write down the serial numbers here for your future reference.
Tampering with noise control system prohibited
Location of labelsImmobilizer description (for e-02, 19, 24, 51)
The immobilizer, an anti-theft system, is installed as a
standard equipment.
The immobilizer verifies that the key id agrees with ecm
id by means of radio communication through the
immobilizer antenna. When the id agreement is verified,
the system makes the engine ready to start.
...
Balancer shaft journal bearing removal and
installation
Refer to “engine bottom side disassembly” (page 1d-
49).
Refer to “engine bottom side assembly” .
Removal
Remove the balancer shaft journal bearings (1).
Note
do not remove the bearings (1) unless
absolutely necessary.
Make a note of where the bearings are
r ...
Engine assembly installation
Install the engine in the reverse order of engine removal.
Pay attention to the following points:
before installing the engine, install the collars (1).
Before installing the engine, install the engine
mounting thrust adjusters (2).
Gradually raise the rear side of ...