I would suggest you take it back to the dealer you purchased it from, as it is still under a warranty.
Now if you bought from a big box store like Blows or Home Cheepo,
I would suggest you contact them, of course they will send you to a authorized Repair dealer.
Sorry I can't help you more, as my familiarity is with the good old metal
equipment of yesteryear.
Possibly you kept your old mower, so you can use it till the new one repaired.
