Honda Automobiles HRM215 Harmony Owner's Manual page 76

STORAGE
Removal From Storage
Check your mower as described in the BEFORE MOWING
chapter of this manual.
If the fuel was drained during storage preparation, fill the tank
with fresh gasoline. If you keep a container of gasoline for
refueling, be sure that it contains only fresh gasoline. Gasoline
oxidizes and deteriorates over time, causing hard starting.
If the cylinder was coated with oil during storage preparation, the
engine will smoke briefly at startup. This is normal.