1. Remove the flywheel..
2. Perform the following procedures to inspect the flywheel.
If there is any malfunction or it exceeds the maximum specification, replace the flywheel..
a. Inspect the surface that contacts the clutch disc for scratches, nicks, and discoloration.

Correct slight scratches and discoloration using sandpaper.
b. Inspect the ring gear teeth for damage and wear.
c. Inspect the runout of the surface that contacts the clutch disc.

i. Install the flywheel..
ii. Measure the runout of the surface that contacts the clutch disc using a dial gauge.
0.1 mm {0.004 in}
Clutch Unit Removal/Installation [C66 M R]
Pilot Bearing Inspection [C66 M R]Stop Vehicle in Safe Place Immediately
If any of the following warning lights turns on, the system may have a
malfunction. Stop the
vehicle in a safe place immediately and contact an Authorized Mazda Dealer.
...
Taking Action
Take the appropriate action and verify that the warning light turns off.
KEY Warning Light
Take the appropriate action and verify that the warning light turns off.
...
Inspecting Engine Oil Level
Be sure the vehicle is on a level
surface.
Warm up the engine to normal
operating temperature.
Turn it off and wait at least 5 minutes
for the oil to return to the oil pan.
Pull out the dipstick, wipe it clean, and
reinsert it fully.
Pull it out again and examine the level ...