Question about Craftsman 17.5 hp 42 in. Deck Lawn Tractor - CA Model

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Craftsman lt1750 with kohler cv491 engine. I have a new battery,checked the seat switch,made sure the brake was on and pto not engaged but I get nothing. Any ideas?

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Start solenoid def will it start if you jump it off by placeing the red possitive to the starter cable lug. the solenoid is about 15 dollars.

Posted on Aug 31, 2010

  • Dean Gruber Oct 22, 2010

    It could also be a blown fuse or bad safety switch

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For the guy with the craftsman LT1750 . I came a cross a used craftsman LT1750 for 150 cash the the mower was in pretty good shape for being outside in the weather , the seat was all weather cracked no needs to be replaced , The guy that I bought in from said it run before he parked it cause the manderal spindle needed replaced and deck belt which wasn't no big deal ! I was told before I bought it that it need work , Ok so got all that done and tryed to fire it up and it would turn over but no fire !! checked gas it was geting to the carburetor so checked all the swithches the seat , the brake pedeal, the PTO was disengaged . so finaly checked for fire with spark plug test " no fire" changed out the coil pack and then it fired right up !! so it run good for being not started in several years, for some reason it wouldnt fire up !? thinking the solenoid went out , went and bought one for about $15 bucks put it on and no fire like I didnt have nothing turned the key no nothing ! so checked it all that I thought could be the problem but nothing !! WELL FOUND THE PROBLEM !! THE KEY SWITCH HAS A BUNCH OF WIRES BEHIND THE SWITCH ONE OF THOSE WAS LOSE !! TURNED THE KEY WITH ONE HAND AND JIGGLED THE WIRES FROM THE BACK WITH THE OTHER AND BOOM !! IT STARTED !! WIRES WERE NOT MAKING GOOD CONACT !! just lose wires from back of switch !!!
!

Posted on Feb 26, 2013

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1 Answer

Craftsman zero turn 26 hp kohler engine new pto electric clutch does not work


Sad to say it may have never been a bad pto clutch but probably safety switch problem. The running tractor wants you in the seat, brake off, levers over your lap and not backing up for the PTO to stay engaged . There is two push button switches on each lever that lay over your lap ,one on the parking brake,one under the seat. All of these switch wires meet at the PTO switch and all have to agree they are in the position they need to be in to allow electricity to come down the wire to the PTO Clutch.

Dec 22, 2016 | Craftsman Garden

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While I was cutting grass the Engine shut down. Pulled the brake up. Push the PTO back down to shut the blades down. I started the engine, engine runs perfect.


try replacing the battery most with an electric clutch PTO have to have a really strong battery as the alternator system is not strong enough by itself

Jun 16, 2015 | Garden

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Why does engine die when brake released or mower engaged?


The first thing I would check is to make sure the drive belt is not binding somewhere.

May 17, 2014 | Craftsman 20 hp 42 in. Deck Lawn Tractor -...

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Kohler CH640-3075 (one year old and in a Grasshopper 720K) will not turn over. Battery charged.


check fuses first. then check starter solenoid for proper power and then this will lead you to either a safety switch issue or a power issue...

turn key on, pull pto switch... does pto engage, then your problem is at or after the key switch

Oct 08, 2013 | Kohler Engines New 20 HP Kohler Engine...

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When the PTO switch is engaged the motor shuts down the same thing happens when the clutch is let out . I have replaced all the safety switches once before and that solved the problem. I replaced the PTO...


Be sure to check the back end of the seat switch wiring for loose or shorted wires. If the engine is shutting off when the brake pedal is released or the pto is engaged most likely the seat switch has failed. The seat switch connector has a shunt built into it. If the connector is not firmly plugged on the seat switch, it grounds out and when the clutch is released or the deck is engaged, the engine will die. Look closely at the connector and you will see a plunger that is pushed in when it is plugged on the seat switch. If the connector is on the seat switch securely, either the seat switch or the connector might be shorted internally. You need a meter to test this. The seat switch should read open when pushed. I hope this is helpful.

Aug 26, 2011 | Craftsman 20 hp 42 in. Deck Lawn Tractor -...

1 Answer

Problem still exist,engine dies when brake relesases,blade engage,unplug safety switch under the seat


Switch under seat needs to be plugged in and make sure the pto lever for the blades is depressing the safety switch. If you are sitting on seat and seat switch is plugged in properly and it cuts off when brake is released then it is seat switch. It is about a $10.00 part; no big deal to replace.

Oct 27, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

I have a Craftsman GT 5000 Garden Tractor, 25 HP, 48" mower. I recently changed the mower belt and it was working fine for about 2 weeks. The last time I mowed, the mower blades suddenly stopped and I...


Depending on your engine.. Briggs and Stratton or Kohler there are 2 different seat switches that are used to power the PTO clutch. The seat switch can cause the PTO clutch to disengage anytime there is not at least 70 lbs in the seat.

The PTO drive wiring has a 30 amp fuse in it. If by chance a stick went through the belt and tore off the wires at the PTO clutch (Common failure) even after you repair the broken wire you still need to replace the fuse.

Check the PTO clearance gap. It should be 0.012 dis-engaged. Any other value and the clutch will not work correctly. Adjust the clutch if necessary.

There is a 2 pin Pigtail just off of the PTO Clutch that you need to check for voltage at the connector. Probe the back of the wires if you can and your looking for 12V DC under the following conditions.

BRAKE ON or tied down
KEY ON
SEAT (Briggs and Stratton engine only) Someone needs to be sitting on the seat.

Then Pull the PTO Switch out. You should hear the PTO Clutch CLICK. If you hear the click there is no need to check voltage. The PTO switch is a multi function switch and it is quite possible the PTO switch failed. I doubt that the PTO Clutch has failed as they normally give you some kind of noisy indication that they are failing and don't fail straight away.

So.. In short
Check PTO Switch (Red wires) to usually red or brown thru the switch
Check 30 amp fuse
Check PTO clutch wires near PTO clutch (They get torn from something traveling through the pulley)
Check PTO clutch clearance at 0.012
Check Brake switch for an audible click as you depress it some distance No click.. possible bad switch
Listen for Seat switch Click as you slowly add weight to the seat. No Click or any click and it can still be suspect due to the Briggs and Stratton installed engine ones have more than one function.. Ignition and PTO clutch power.

The actual wiring diagram is on page 35 of the owners manal that can be found here:
http://www.managemylife.com/mmh/owner_manuals/27245/CRAFTSMAN-Lawn,-Tractor-L9910386?brand_name_search=917273023

Lastly... check each of the mower deck blade bearings. A seized bearing can cause PTO problems.

Hopefully you have enough information to solve the mystery. If not just respond here and I will help you.

Thanks for choosing FixYa.

Kelly



Oct 06, 2010 | Craftsman Garden

1 Answer

I have a 6 year old Craftsman rider, model 27363 w/18.5 HP Briggs engine and 42'' deck. I tried to start but nothing - no click, ammeter doesn't move, hour meter doesn't run. Checked battery, have 12.8...


The start circuit usually only goes through the clutch/brake switch, and the clutch switch. That way it won't start if the clutch isn't depessed (brake on) and the mower deck turned off. You can test for voltage on the s terminal (start) on your switch. then for 12V+ at the clutch brake switch, then at the clutch switch, finally at the solonoid. The seat switch usually only kills the ignition if you have the PTO engaged, and you leave the seat.

Jul 26, 2010 | Craftsman Garden

1 Answer

Craftsman 42in 15hp Kohler engine dies when either the brake is released or the blades are engaged. Replaced switches, still happens.


You replaced the seat switch? Make sure you trace the seat wiring back to the main harness. Look for any signs of the wire rubbing against metal and shorting to the frame or other metal component.
Good luck, let me know.
Regards,

Aug 22, 2009 | Craftsman Garden

1 Answer

Craftsman model 917.272950 lawn tractor won't start


OPERATOR PRESENCE SYSTEM
Be sure operator presence and interlock
systems are working properly, If your
tractor does not function as described,
repair the problem immediately.
• The engine should not start unless the
clutch/brake pedal is fully depressed
and attachement clutch control is in the
disengaged position.
• When the engine is running, any
attempt by the operator to leave the
seat without first setting the parking
brake should shut off the engine.
• When the engine is running and the
attachment clutch is engaged, any
attempt by the operator to leave the
seat should shut off the engine.
• The attachment clutch should never
operate unless the operator is in the
seat.

Check your seat switch and clutch switch wires be sure that the connection to each switch is making contact and the mechanism that activates the switch is actually activateing them in other words be sure the clutch is pushing the switch in and your seat switch is occupied and be sure all grounding wires a intack
especially from your battery negative to the frame.You also could have a neutral safety switch which requires your transmission to be in neural.
try these things and let us know how we can further help from more of your input.

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