Be sure to fill-out and mail in the registration card (or register online at
Click here to register your new Honda online) and mark the date-of-purchase on or after March 1; this will automatically add +1 year of factory warranty to your mower.
The first oil change should be done at either 30 days or 5 hours of use, whichever comes first. Use SAE 10W-30 oil. Subsequent oil changes are at 50 hours/6 months. More scheduled service items are listed in the Maintenance chapter of your owner's manual.
The single biggest service issue for lawn mowers is a clogged carburetor due to stale/decayed fuel. To avoid this problem, either treat the fuel in the tank with stabilizer to extend its life, or fully drain the fuel tank and carburetor. Draining is strongly recommended if you don't expect to use the mower for 45 or more days. Only fill the tank with fresh fuel. If available in your area, pay a little extra per gallon and get ethanol-free fuel.