Small Engine Problems? Ask an Engine Mechanic for Answers ASAP
Greetings, My name isXXXXX and I am here to help the best I can. My goal is 100% satisfaction. Let's get started.
After starting.. Many of these mowers will run if you do not have the parking brake engaged
as long as the mower deck is not on and the tractor is in neutral
so this is likely not the problem
You are going to think I am Nuts here, but
I think you may just need a new battery
One thing for sure , previously it would not run without engaging parking brake if you left the seat
I have heard that
are you still there
But the electromagenet on the PTO clutch
sorry important phone call from soon to be ex wife..
the PTO clutch requires a LOT of power (amperage
there is another electromagenet under the carburetor that shuts the fuel flow off when the key is turned off
(or when you get off the seat)
It uses power, then stops using power when you get up
i have never had this prob before when the battery needed to be replaced
this allows enough power to operate the switch as soon as the power stops flowing to the carb afterflow solenoid
Does not always act this way... This happens when there is enough power in the battery start the mower, but not enough to power the pto switch and the fuel solenoid
It could also be that the chargin system is not quite keeping things up to snuff
This is a common enough problem that I have put to gether a premade answer for PTO's
why would it not make a sound until i raised up off of seat ?
It just does not have enough power to operate the switch..
Electricity will follow the path of least resistance.
it will go through the carb solenoid because it is easier than going through the PTO
Here is my STANDARD PTO answer.. Not all will apply here, but I just wanted you to know it is a very common problem
First. a battery problem will cause major trouble with the PTO. It takes an enormous amount of battery energy to run an electric clutch. So if your battery is low...or goes down, the pto cannot work. Even if there is enough power to start the engine.
If you bought a battery from a discount store. There is a good possibility that either the battery was bad right off the shelf or that it didn't have the required 350 cca that is the minimum for an electric clutch to work correctly for any length of time.
If the battery keeps going down, you could also have a problem with the charging system. Just a note about charging systems in a lawn mower. YOU CANNOT EVER JUMP-START A LAWNMOWER WITH AN AUTOMOBILE OR YOU WILL RUIN THE CHARGING SYSTEM OF THE MOWER. tHE SYSTEM OF THE CAR WILL BLOW THE MOWER'S CHARGING SYSTEM.
You'd have to have the charging system in the mower checked.
The PTO switch could also be bad causing this problem. This happens fairy often.
Also check the wires that attach to the pto clutch. If they came loose, it won't work. Also check for any corrosion on any of the wire terminals and also the battery post and terminals. Also check to make sure that there is not corrosion on the ground cables.
Last but not least, the PTO itself could be bad.... or at least need adjusted...if it has an adjustment. If you have an adjustable clutch, the setting is .010" between the two halves of the clutch...(in between the slots)
give me just a min on typing , not to good at it : )
no problem.. I am actually eating lunch right now, so enjoying the break (so to speak). Crab Cakes and corn on the cob.
had the clutch (pto) checked , it showed good , have never jumped it with vehicle
I expected the Clutch to be good. Other reasons for charging system to go bad other than jumping.. But, I do not think that is the problem either..
you dont think it is likely a safety switch , the freaky way it is acting ?
I am more believeing it is a connection problem, bad ground, bad battery terminal, frayed wire partially grounding out, bad ignition switch (where it has developed a resistance), or the bad batttery.
You can test the safety switch with a meter..
i know for a fact that before it would not run without setting the brake if you raised up off the seat
But, the confusing part is that it that it does not die when you let go of the parking brake...
Does it die if you are Drving and get up off the seat?
Does you unit have a Module that all the safety features go in to (a small circuit board or replay?
Might have been a mid year change
if so, the moduel could also be bad
There IS a safety switch built INTO the PTO unit..
It is Possible for the PTO to work, without the Safety switch built in not working.
not sure , its a 2002 L120 john deere , that has already cost me a bundle of money , fixing to roll it of a cliff LOL
Just do not drop it on anyone's Head.. Not worth Jail time.
LOL no doubt
I am going to transfer the question to Q&A MODE..
I want to bounce this one off my more experienced brother (37 years running one of largest dealers in state). Sales and service..
We will not be able to instant chat anymore, but we will both be notified via email of replies and follow ups
His shop does not close for another couple hours and I KNOW he is very busy this time of year.
I was Moving today, not helping..
but, saw your question, finished moving, thought I would help
As soon as I get his opinion, one of us will post here again.
We should be able to get you fixed up
only prob is i need it quick , yard looking terrible
If it is a safety switch, you can try this..
I expect that you have a problem with the safety switch under the seat
it is there so that if you are Driving and fall off the seat, it stops the mower from driving off or driving over you
also known as a dead man switch
trains have them too for obvious reasons
I would look at the switch and see if it is being engaged all the way when you sit on the seat
sometimes brackets get bent out of shape of the mounting is just off a bit and you can bend it back to make the switch engage
other times, the switch is broken and you have to replace the switch
Still other times, the connectors are loose on the switch (or off) and need to be taken off, then put back on so the wires are actually connected to this Kill switch.,
You should also examine all wires going to the switch from the switch all the way back to the other end
make sure there are no frayed wires
That would be true of the safety switch on the brake / clutch and the mower PTO switch as well as any that would detect if the rider is in gear
But, the seat switch is designed to kill the engine if you let go of the brake or start up the mower blades without being on the seat
Frankly, I would check ALL the switches the same way, but start with the seat switch because I am betting my $8.50 on it
Dang, I forgot to say, sometimes the switch is just bad and will not "SWITCH".
you check that with a meter.
then replace the switch if it will not switch between open and closed
Also, you can jump the battery to a Vehicle that is NOT running at all. POST to POST + to + and neg to neg
Then start the mower with Both batteries hooked up
see if the PTO will run then..
If it does, Get a new battery or check the connections to the mowers battery
OK, after a conference call with my brother, and his head mechanic in combination with me finding a wiring diagram for your unit, we think we have a 90% answer.
Here is a wiring diagram
WIRING HARNESS (SN 060001- )TMBR>WIRING HARNESS (SN 060001- ) (CONTINUED)
From what we see, there is a module on your unit called an RIO which is a switch that will NOT let the mower engage (or will kill the engine) when you try to mow in reverse.
We believe that you may have a multi pronged problem that may be feeding off each other.
You may have a bad RIO module (prevents mowing in reverse)
AND / Or your unit may have a bad or mis adjusted safety switch that detects to see if the transmission is in Reverse.
AND / OR you may have a bad seat switch..
AND / Or there may be a problem with the wiring harness.
I hope this helps