How to replace the spark plug in your Craftsman walk-behind lawn mower
- When the engine is cool, disconnect the spark plug wire from the spark plug.
- Use a spark plug wrench to loosen and remove the spark plug.
- Use a spark plug gap tool to set the gap between the center electrode and the ground electrode. The gap specifications for your model are in the owner's manual.
- Thread the spark plug into the engine. Then tighten the spark plug with a spark plug wrench.
- Reconnect the spark plug wire and start the mower to make sure it runs.
How to fix your Craftsman walk-behind mower when it won't cut evenly
- If the mower isn't cutting the grass evenly, first make sure that the wheels are set at the same height.
- If a wheel is damaged, replace it to ensure that the mower travels evenly over the lawn.
- Also check that the blade is sharp and undamaged. A dull blade tatters rather than slices the ends of the grass, leaving the tips brown and dry.
- A damaged blade is off balance, so it cuts unevenly. Replace the blade if it's damaged.
Sears PartsDirect has the Craftsman walk behind mower parts for the 650 series with 190cc engine and a 22 inch blade
Trust Sears PartsDirect to have the Craftsman 650 series lawn mower parts you need to fix the equipment quickly when a failure occurs. We also parts for many other models. Use the exploded Craftsman Platinum 7.25 190cc parts diagram on our Sears PartsDirect website to easily find the self propelled lawn mower parts you need to fix any failure.
Sears PartsDirect also has Craftsman 700 Series Platinum mower parts and Craftsman EZ Walk lawn mower parts. Get the parts and accessories that you need for any type of Craftsman mower.