How To Install A Spark Plug On A Lawn Mower

Mowers

How to change spark plugs on a lawn mower

Old, muddied or fouled spark plugs won't be able to create the spark required to keep your engine running. If you're having trouble starting your engine or tin can't seem to keep it running, a worn out spark plug could be your event. Replacing spark plugs should be part of your regular lawn mower maintenance. The chore should take merely a few minutes and merely requires a handful of tools.

Wrench and spark plug socket or regular socket
Spark plug gap gauge

Instructions

Locate the spark plug(s). On a walk-behind or riding backyard mower, they're normally most the front of the engine. On zero-turns, await near the back of the engine on the sides.
Disconnect the spark plug lead and clean around the spark plug to remove any debris.
Remove the spark plug using a spark plug socket. Specialized spark plug sockets have safety inserts to protect the plug's ceramic body, just a normal socket tin be used if you don't have one.
Check the gap on the spark plug and set it to the recommended size using a spark plug gap gauge if necessary. Spark plugs should come with the proper gap from the manufacturer, just it never hurts to double-bank check. The proper size for your engine can be institute in your possessor'south transmission.
Replace the spark plug with the new one, starting it past hand to ensure the threads are aligning correctly. One time the plug is started, tighten it the rest of the style with the spark plug socket. Tighten it until the washer on the bottom of the spark plug compresses.
Re-install the spark plug lead.

How to gap a spark plug

If the spark plug gap is as well wide, gently press the gapped side against a hard surface. If it'southward likewise narrow, identify the hole on the spark plug estimate over the ground electrode and carefully pry the gap open up. Remeasure the gap and keep adjusting until information technology's correct. Be conscientious not to utilize also much pressure level or it may pause.

If you need help finding parts for your backyard mower, call your local Hutson store. If you lot don't feel comfortable doing the maintenance yourself, schedule a service with us.

Published September 24, 2022