13.5hp Briggs And Stratton Intek Lawn Mower Engine

Experienced gardeners share their insights in answering this question :
The small black wire running to the coil (ignition module) is the kill wire. Any of the safety switches on the mower or the key switch can send ground to this switch and turn off the engine. Most commonly the cause is one of the safety switches. A repair shop usually charges 1 to 2 hours of diagnostic time to find the problem. It is actually less expensive to just replace all of the safety switches and the ignition switch than it is to figure out which one is failed. There will be a switch under the seat, one on the transmission for neutral, one on the PTO or deck engagement lever, and one on the brake/clutch. On most modern riding mowers, these switches are run in parellel with each other and only connect ground. Some will connect positive current also to the key switch.
Good luck!

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 :

Your Mower Won`t Start:

Other possible causes include: Loose, Dirty or Disconnected Spark Plug in Your Lawn Mower: Check it out, clean off debris, re-connect and tighten. Dirty Air Filter: Clean or replace. Fuel Not Reaching the Engine: Tap the side of the carburetor to help the flow of gas.

Q. Why is my lawn mower turning over but not starting? The most likely reason is bad gas. Gas that sits for many months during the off-season will eventually break down, gumming up the fuel line and carburetor in the engine and preventing it from starting.
Black smoke may indicate that the mower is “running rich,” or burning too much gasoline. Your lawn mower`s carburetor regulates the ratio of gasoline to air mixture. If the carburetor isn`t getting enough air, the mixture has a higher percentage of gasoline, which can create black exhaust smoke.
The relationship between crank and cam timing events can also cause no spark, especially on Chrysler products. On these vehicles, the PCM won`t trigger the ignition coil if the cam and crank are out-of-sync.
The gap is not a critical value, thankfully. However, if the flywheel and coil ever come in contact with each other while the engine is running, the coil will be damaged and coil output will suffer. If this has happened, the coil must be replaced.
Riding Mower Clicks but Doesn`t Crank

When you hear a click as you turn the key, a weak battery, bad starter solenoid, faulty wiring, failed starter motor or a seized engine could be the cause. This DIY troubleshooting will help you figure out what to fix.

If your Briggs & Stratton engine has a spark but won`t run, then it is most likely a problem with the gas or air intake in the engine. The spark on the spark plug ignites the gas in the piston, but if the air filter is clogged or the gas can`t flow, then the engine won`t start.
1 Start motor engages but the engine doesn`t turn

The simplest cause of this sort of fault is a loose or corroded electrical connection. If there is a fault with the internal windings of the starter motor, bad brushes, or other electrical faults, the starter motor may lack the torque to crank the engine.

A Dirty Carburetor Can Cause a Lawnmower To Start Then Die

By far, the most common issue that causes a stalled motor is a dirty carburetor. The carburetor on your engine is the thing that draws in air and mixes it with the fuel. Contrary to what the movies might make you think, gasoline itself is not very flammable.

Once the engine is cranked, you should look for blue sparks along the spark plug gap. If you can see blue sparks, this proves your ignition coil is working correctly. If you don`t see blue sparks or you see orange sparks, this is a sign that there`s a problem with your ignition coil.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

B &S engine on craftsman riding mower–will not start unless black wire removed from coil—-is this a bad wire…..or switch
ANSWER : The small black wire running to the coil (ignition module) is the kill wire. Any of the safety switches on the mower or the key switch can send ground to this switch and turn off the engine. Most commonly the cause is one of the safety switches. A repair shop usually charges 1 to 2 hours of diagnostic time to find the problem. It is actually less expensive to just replace all of the safety switches and the ignition switch than it is to figure out which one is failed. There will be a switch under the seat, one on the transmission for neutral, one on the PTO or deck engagement lever, and one on the brake/clutch. On most modern riding mowers, these switches are run in parellel with each other and only connect ground. Some will connect positive current also to the key switch.
Good luck!

Mower runs for about 5 min, than dies won’t restart . When cool start up ( craftsman 42 in deck 19.5 hp lawn tractor )
ANSWER : Check for spark when it dies you could have a bad coil

Hi i having a problem starting my mower it a Craftsman LT2000 18.5 Intek OHV Briggs & St i removed the battery and starter and had them both check both are…
ANSWER : Turnes over slow for 2 or 3 turnes then quick and maybe a start or goes bact to compression on engine

I have a craftsman riding mower with a 27hp B&S engine. Have had sooo many problems with it. Now engine will crank but will not start. Have cleaned fuel line out and it just won’t fire. Any suggestions?
ANSWER : Some of the riding mowers has a safety switch under the seat so when you get off it shuts off. If it goes bad it will not start. check by bypassing the switch. For safety make sure it’s in neutral. This is a long shot . But it can be eliminated as a problem after being checked.

Will overfilling motor oil cause the engine not to start?
ANSWER : YeS. if thereS to much oil it cauSeS the engin to run rough or even not Start

Manual mtdproducts Will not start. Engine turns over. No spark to the plug
ANSWER : You need a new coil

Zts 7500 cranks but wont start,dont have a spark,have a new plug
ANSWER : Sounds like your coil is bad. Fortunately they are fairly cheap and fairly easy to install. I would replace the coil.

Model # 917.270810 craftsman riding mower…. Is there a way to check the trany fluid or is the trany just bad…..and when i push in the clutch/brake it doen not stot its a slow stop….what could this be also…… Thanks
ANSWER : The brake caliper is frozen up or the brake pad is gone whats going on with the tranny not wanting to move or what