Service schedule

Craftsman service schedule, operator's manual 414940, 416806, 421450

Last checked October 1, 2026

Check engine oil level, check for loose fasteners, check controls are workingBefore each use
Change the engine oilEvery 25 hours, or at least once a year
Replace the spark plugBeginning of each season or every 100 hours, whichever first
Check V-belts for deterioration and wearEvery 50 hours
Replace the spark plug and check belts for wearAt least once a year

As printed in the operator's manual, form 414940, 416806, 421450.

Models this schedule covers