17.5 hp 42 in. Deck Lawn Tractor – CA Model

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

If no spark appears, check for broken wires, shorts, grounds or a defective stop switch. Once you have confirmed that the stop switch is working, reconnect the spark plug lead.
Alternators power the small engine while it is running, keeping the battery charged by circulating power back through the system. For the easiest method to check your alternator, simply turn on the headlights to your lawn mower or outdoor power equipment.
Loss of spark is caused by anything that prevents coil voltage from jumping the electrode gap at the end of the spark plug. This includes worn, fouled or damaged spark plugs, bad plug wires or a cracked distributor cap.
If the ignition coil does not have spark, it`s time to check its wires. Use a test light to check the continuity on the signal wire and power wire on the ignition coil. If both wires are functional but the coil fails to produce spark, the ignition coil or the ignition control module is bad.
Replacement Plug

The Craftsman 4.5hp mower uses either a Champion model RJ19LM or J19LM spark plug, or equivalent, with the gap set at . 030 inch.

SAE 10W-30 4-Cycle Lawn Mower Oil (20 oz) | CRAFTSMAN.
When the high voltage produced by the ignition system is applied between the center electrode and ground electrode of the spark plug, the insulation between the electrodes breaks down, current flows in the discharge phenomenon, and an electrical spark is generated.
A new lawn battery should last between three and five years. In order to achieve that, however, it`s important to perform regular maintenance. Here are a few tips to help you get the longest life possible out of your battery.
There are a number of possible causes for a lifeless mower, but ultimately only two things are required for an engine to start: fuel and a spark. If the engine isn`t getting a spark at the plug or fuel isn`t reaching the engine, your lawn mower is never going to start.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

I need the spark plug gap for an Ariens ST624E. the spark plug = 21533500
ANSWER : The recommended setting is .030″

What should the spark plug gap be on a weedeater trimmer 25cc
ANSWER : Set it at .025

What does a spark plug gap at – Craftsman sears 18" Chain Saw Chain ( Model 35084 )
ANSWER : Hi, your spark plug gap should be the thickness of a hacksaw blade. use a hacksaw blade. sheers

<!– from fixya rte –>Spark plug gap setting poulan pro 033. – Poulan Pro Prod/Poulan Weedeater Poulan Pro PP5020AV 20" Gas Chain Saw
ANSWER : .025″ plug gap

What is the spark plug gap for a NGK BPM8Y – Echo Cs-400 Chainsaws
ANSWER : 20-25 thou which is around 0.6mm

I have a briggs and strattan 18 horsepower engine on my craftsman mower and it wont start, i replaced the starter and it still wont start! It wont even turn over, in fact it binds the starter, but if I take the spark plug out and try to start it, the starter engages and turns the motor over just fine but of course it wont start cause the spark plug is out! Whats the problem?
ANSWER : Set intake valves @ .004 and exhuats @ .006 with piston a 1/4 inch downstroke from TDC.It sounds like the ACR {automatic compression release}is not working do to valves having to much lash.

What is the spark plug gap for a ryobi string trimmer model # ry30550 ?
ANSWER : I can’t say for sure, but it’s PROBABLY about 0.035″.

Will not start turns over has spark the engine was running and killed and will not restart
ANSWER : If you have good fuel to the plug and a good spark and it still does not start it could be a timing issue, check the flywheel key has not sheared.