Bulbs
Flower Basics
Flower Beds & Specialty Gardens
Flower Garden
Garden Furniture
Garden Gnomes
Garden Seeds
Garden Sheds
Garden Statues
Garden Tools & Supplies
Gardening Basics
Green & Organic
Groundcovers & Vines
Growing Annuals
Growing Basil
Growing Beans
Growing Berries
Growing Blueberries
Growing Cactus
Growing Corn
Growing Cotton
Growing Edibles
Growing Flowers
Growing Garlic
Growing Grapes
Growing Grass
Growing Herbs
Growing Jasmine
Growing Mint
Growing Mushrooms
Orchids
Growing Peanuts
Growing Perennials
Growing Plants
Growing Rosemary
Growing Roses
Growing Strawberries
Growing Sunflowers
Growing Thyme
Growing Tomatoes
Growing Tulips
Growing Vegetables
Herb Basics
Herb Garden
Indoor Growing
Landscaping Basics
Landscaping Patios
Landscaping Plants
Landscaping Shrubs
Landscaping Trees
Landscaping Walks & Pathways
Lawn Basics
Lawn Maintenance
Lawn Mowers
Lawn Ornaments
Lawn Planting
Lawn Tools
Outdoor Growing
Overall Landscape Planning
Pests, Weeds & Problems
Plant Basics
Rock Garden
Rose Garden
Shrubs
Soil
Specialty Gardens
Trees
Vegetable Garden
Yard Maintenance
How to Test a Lawn Mower Charging System
How to Test a Lawn Mower Charging System. When your power lawn mower will no longer start on its own or hold a charge, the voltage regulator may be damaged. Every power lawn mower runs off a 12-volt charging system. In order for the battery to stay charged, a voltage regulator must create a higher voltage to send back to the battery to make it...
When your power lawn mower will no longer start on its own or hold a charge, the voltage regulator may be damaged. Every power lawn mower runs off a 12-volt charging system. In order for the battery to stay charged, a voltage regulator must create a higher voltage to send back to the battery to make it operational. Testing your mower's charging system should take you about 10 minutes to complete.
Things You'll Need
Voltmeter
Park the lawn mower on a hard, level surface and set the parking brake.
Open the hood of the lawn mower and locate the battery behind the engine. Turn the key clockwise until the mower headlights come on for 15 seconds, which will partially drain the battery.
Start the engine. Turn the voltmeter on and set it to DC current. Place the positive (red) lead from the voltmeter on the positive battery post, and place the negative (black) lead on the negative battery post.
Check the reading on the voltmeter; it should be between 13.0 and 15.0 volts. Turn the engine off and check the reading; it should be between 11.2 and 12.0 volts.
Tips & Warnings
Keep your hands clear of the muffler while the engine is running.
