17.5 hp 42 in. Deck Lawn Tractor – CA Model

I have an older Crafstman riding mower model 917.270722. It’s 17HP w/ 42 inch deck. Recently it runs fine until about 15 minutes in then shuts off. Until today, I was able to restart it seconds later and it would run for about 5 minutes before doing the same. Today, it ran for 10 minutes, did the same and then died. when I tried to start it it spun slower and slower until eventually, it won’t turn at all. It’s doing nothing. I checked the battery and it’s showing fine. Help?
Experienced gardeners share their insights in answering this question :
The two most likely suspects for the symptom you describe are:
a) Ignition coil failure under high heat.
OR
b) Decompression failure due to normal wear.

For a positive diagnosis try the following:

For scenario a)
Run the engine until it shuts itself down. As quickly as possible, check for spark using a spark tester (availabe at local auto parts store). If no spark when hot, allow to cool down and test again. If good spark when cold and no spark when hot, change the ignition coil.
Proper part number (assuming your machine is still all original) Briggs & Stratton part #492341.

For scenario b)
Run the engine until it shuts itself down. Try to restart but pay close attention to the speed of the spinning starter. Next, remove the spark plug and spin the engine over (WITH SPARK PLUG WIRE WELL OUT OF THE WAY!!) If the engine spins super fast and free you can discount the theory of a bad battery and you will need to adjust the valve lash.

Determine which is the case and reply to this post. I will gladly give a detailed explanation of the valve lash adjustment procedure in another post.

Hope this helps!

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 :

Being Overworked

One of the most common reasons that a lawn mower might stall while it is cutting grass is that it is being overworked. This is a mechanism that is intentionally incorporated into the mower to prevent the motor from being blown.

An improperly routed belt can cause the engine to die when the blades are engaged. To check belt routing, lower the deck to its lowest setting and remove the belt guard by the drive pulley. Next, lift the belt over the pulley and remove the pins that support the deck at the rear.
If your lawn mower starts, runs briefly, then dies these are the four most common reasons that`s happening: Dirty carburetor / clogged carburetor bowl. Old gasoline that has gone bad. Dirty or defective spark plugs.
Condensation inside the gas tank is one culprit, but moisture can also enter the system through a loose or ill fitting gas cap. The best solution is to drain the mower`s gas tank and refill it with fresh gasoline. A clogged fuel filter can also cause a mower engine to die.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
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. If this doesn`t work, you might need a new fuel filter.
Check the Battery

If it measures less than 12 volts, the battery is weak or dead and you`ve likely found the problem. Try recharging the battery using a charger. Or, you can use jumper cables to jump-start a riding lawn mower that uses a 12-volt battery.

Best riding mower overall

The Troy-Bilt Super Bronco XP riding mower is an excellent choice for a variety of lawns. It`s built with a 24HP Kohler engine and a 54-inch cutting deck to let you handle inclines and rough terrain or haul tools, mulch, and potting soil around your property.

Lack of Lubrication. Without adequate lubrication, the gears in the transmission can become reluctant and hard to shift. Check the transmission fluid level regularly and change the fluid based on the schedule recommended in the owner`s manual provided by Troy-Bilt.
As the fuel level drops, a vacuum begins to form in the fuel tank because air can get in to fill the space the consumed fuel occupied. After about 10 or 15 minutes, the vacuum will become strong enough that fuel will stop flowing to the carburetor and the lawnmower will die.
A dirty carburetor is the most common cause of a lawn mower that starts and then dies. Other possible causes include: Stale/Dirty Gas. Faulty Choke.
Over time, a spark plug will wear out. Eventually, the spark will no longer be powerful enough to fully ignite the air and fuel. You are likely to notice power loss including bogging down when cutting grass because of a worn spark plug. Removing and replacing a spark plug is easy.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Toro 149cc Lawn Mower Won't Start – Toro Lawn Mower With Toro Power Tools
ANSWER : Bad carburetor your old fuel jammed up the jet so it won’t get fuel and if it does it will start and shut off So replace the carb or try to clean the jet and run non oxy fuel only

My toro 6.5 hp push mower (2010), has no fire to the plug. I have not abused it. i have a small yard and it just gets normal use. Now it won’t fire. I first changed the fuel and cleaned the carb thinking it was that crappy ethanol again. but i grounded out the spark plug and cranked it…no spark. I think it has to do with the lever you pull back to start it . they have some stupid complicated safety contraption that rides along the fly wheel when you pull back on the handle for starting and shutting off the engine. …it looks worn out already…like a mini brake pad. any ideas?…do i really have to replace this garbage every year or am i on the wrong path here?
ANSWER : Unhook your wire from the coil that goes to shut off mechanism, and see if you have spark then. the wire may be grounded out, or your coil might have took a ****

New battery won’t hold charge
ANSWER : The best way to check for a draw is to remove the neg cable from the battery charge if then place a test light between the battery and the cable if the light is on you have a draw then start to unplug connectors one at a time the first one i would test is the charging system plug first if the diode is bad it will drain the battery

Mower won’t start
ANSWER : This may sound stupid but don’t mean it to…
Have you tried with the choke all the way open? Do you have an automatic cruise? Is the right (correct) pedal being pushed in? These will affect if it starts or not. Also if your drive belt or one of the other belts not being tight enough will affect if it starts or just turns over. Not too many things can stope it from starting with new/good battery AND if its getting gas. Try cleaning your gas line and obviously making sure there is no obstruction around or near your blade, if it does start with blade engaged that is :))
If it doesn’t start with blade engaged, well make sure it’s in neutral. Mine won’t start in reverse but will in forward or neutral.

Hope it helps.

Anthony

I have had a poulan pro 550 series push mower for almost 1 year at the end of the season last year the mower would start briefly and then stop. i have cleaned out the air filter and that did not help.the mower started, i made one revolution around the yard 3/4th of the way the mower quit. I then primed the mower it started then quit and now it will not start at all. Does anyone have any suggestions of what to do. Thanks
ANSWER : There is a little spring that works the carburetor arm. If that popped off then the mower will not run.

My mower will start but won't stay running – Toro LX466 22HP Lawn Tractor 13RT61RH244
ANSWER : I am going to respond 2 times to this post. The first reply will be generic things to check.
First off check the oil level and make sure it is serviced to full.
If your having a lack of fuel (runing lean) you will need to check fuel flow at the carb fuel mainfold. It should fill a spray paint can lid in less than 10 seconds but teting flow rated of the main fuel line. If you have poor flow here… you need to check the fuel filter and the fuel tank outlet port for obstructions.

Good Fuel flow still shutting off…. remove the carb float bow and clean the debris from the bow’ and the treaded area where the fuel solenoid mounts Additionally you will have to again remove the main fuel line and spray carb cleaner in the float needle area to flush out any debris through the fuel hose connection.

For the second response I need to know which engine is installed on your mower by MODEL number if you can locate it. (there are 3 engines) At least try to find the engine model number. If you can not locate it Brand and HP of the engine (I assume 22 hp) Thanks for choosing FixYa,
Kelly

B&S Quantum Power 4hp won’t start with fresh plug,
ANSWER : Did it run before you changed the plug?Gap is correct, flywheel shear pin may be bad, Water in the Gas?

My lawn mower won't start – Brute 7800802 22-Inch 190cc Briggs & Stratton 675 Series Gas Powered FWD Self Propelled Lawn Mower With High Rear Wheels
ANSWER : Your carb is jammed up with ethonal eithier clean t out or replace the carb and run non oxy fuel from now on and u won’t ever have any issues AGIAN