Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

2 Answers

Mastercraft 18hp B&S lawn tractor Won't start with key BUT am able to "hot wire" by srewdriver blade across starter solenoid - recently put in new - with ignition swith to "on". Good battery, good ground connection, all other connections and wiring seemingly OK with continuity OK; ignition switch OK, circuit breaker OK - So where do I look now - ??? If I replace the starter solenoid again - what is causing it to fail after a couple of starts??

Posted by on


2 Answers

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 5 Answers

Hi NiteRanger shorting out the two large terminals on the solenoid does not mean the solenoid is working !!!! The test for ascertaining whether it works or not is to disconnect the wire on the small terminal and then connect a wire to the positive terminal of battery and briefly touch it to the small terminal if starter operates then solenoid is good.

Posted on Oct 15, 2012

  • Level 1:

    An expert who has achieved level 1.


    An expert who has answered 20 questions.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 26 Answers

If you can cause the engine to turn over by shorting out the solenoid then it is OK.Your problem is probably that there is no power getting to the solenoid from the ignition switch. Connect a test light to the control wire at the solenoid and turn the key, if it doesn't light then follow the wire back to the switch looking for a break in the wire.The wire casing may not be broken while the wire may be open inside so feel for soft spots where wire may be broken. Check your ignition switch is sending power to this wire when in start position, the switch may be faulty.

Posted on Oct 08, 2010


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of.(from cars to computers, handyman, and even drones)
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Solenoid clicks but starter does not kick in to start tractor

Clicking Sound While Attempting to Key Start - Riding Mower
Jul 19, 2002 - Why does the tractor make a clicking sound and not start? ... Thesolenoid connects the battery to the starter motor when the solenoid is energized. ...It can click, but not make a complete connection. ... Starting - Riding Mower · Professional Shop Manuals · Basic Troubleshooting - Lawn & Garden Tractors.

How Do I Tell If the Starter Solenoid Is Bad on My Kohler ... > Real Estate Advice > Basic Real Estate Advice
Most large Kohler engines on riding lawn mowers use an electric starting system. ... A bad solenoid can deny electricity to the starter motor and prevent engine startup. ...Lawn Mower Will Fire but Not Start · Replacing a Solenoid on a Craftsman Lawn Mower or Tractor · How Does a Starter Solenoid on a Lawn Mower Work?

My Bolens lawn tractor won't start. It just clicks when I turn ...

Dec 03, 2015 | Garden

1 Answer

No power going to ignition

Check fuses and check the power across the starting solenoid

Sep 20, 2015 | Cub Cadet LTX 1042 KW 42" 18HP Kawasaki...

1 Answer

Wont start no power to switch

I'm not familiar with your brand and make of lawn tractor but here's a few basics many of them have in common.

Any one of several safety features on newer lawn tractors will prevent it from starting.

Assuming your battery is fully charged, here's a few basic things to check, depending upon your level of skill and motivation:

1. Parking brake: A switch must be engaged when the parking brake is set. Most newer lawn tractors have to have the brake set to allow the starter interlock relay to energize the starter.
2. Blade engagement PTO: The blade PTO switch or lever must be OFF or the tractor starter won't energize.
3. Seat switch: Some (not all) newer lawn tractors won't start if the operator presence seat switch is not closed. (you have to be sitting in the seat or the starter will not be energized.)
4.. Corroded/loose battery terminals or wires. Remove the battery leads and clean the terminals. Check and make certain the battery leads are tight.

You can do some investigative sleuthing by using a multimeter, set in the OHM position, to test switch continuity. Locate and unplug these switches from the wiring harness, one at a time. Insert the meter's test leads into the switch plug's terminals; not the wiring harness. Activate the switch. If your meter shows current pass-through or continuity, the switch is working. If the meter reads OL (for digital meters) or stays at zero, that switch is bad.

If your safety switches are good, you'll have to look deeper.
Some lawn tractors have a fuse panel to protect the electrical circuits and components.
1. If you have a fuse block on your tractor, remove the plastic cover. Most of the fuses in today's tractors are the color coded, plastic cased, automotive type. Remove each fuse and inspect their filaments one at a time. A blown fuse will be easily identified. Replace any blown fuse.
2. The starter interlock relay may be faulty, or have a disconnected/broken wire. Check your wires and terminals. The starter switch itself may be faulty. Use your meter in the OHM setting, put your leads on the starter switch terminals with the switch disconnected and off. Turn on the ignition switch and turn the switch to the start position. If the switch shows current pass-through, the switch is good. If not, replace it.
3. Is your battery discharged? Do you hear a "click" when you try to start your tractor? If you hear a "click" when you turn your key to the start position, and your battery is charged, there's a strong likelihood your starter has malfunctioned and needs to be replaced. (or your engine is seized) If you hear absolutely nothing while trying to crank over the engine, it's a safe bet you're not getting power to the starter because of a safety switch, bad fuse, starter interlock relay, or a broken/disconnected wire somewhere.

Sep 20, 2015 | Cub Cadet LTX 1042 KW 42" 18HP Kawasaki...

1 Answer

Change fuse

Follow red battery cable to solenoid, then follow small red wire to in-line fuse holder. Remove fuse and replace same amp fuse.

Jan 04, 2014 | Cub Cadet LTX 1042 KW 42" 18HP Kawasaki...

1 Answer

Starter won't engage heat gauge goes across to hot when trying to start truck. What causes this?

Voltage drop? I'm guessing you don't have a voltmeter, so turn on the headlights and observe them as someone tries to start the truck. If the lights go out, bad connection at battery, starter, or ground. If the lights get dim, probably the starter-it's drawing power, just not working. If the lights don't change, check for power going to the starter solenoid on the small wire on the starter; voltmeter or test light, check if the small wire to the solenoid has power when key is held in start position-in crank position. There should be battery voltage there when the key is turned to crank. If so, the starter or solenoid is bad. If no power there to solenoid, power is lost somewhere between ignition switch and the starter wire.

Mar 05, 2013 | 1994 Chevrolet C1500

2 Answers

I have a LT4000 riding mower it will not start. i have to jump it at the starter.

Have you checked the solenoid? Does it click when you turn the key? If not then check the solenoid by taking a long screw driver (with a rubber handle) and short between the post if it attempts to start then your ignition switch is bad if not then the solenoid is bad.
Now all of the above assumes that you verified that your battery is good.

Aug 31, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

18hp kohler engine (grasshopper) won't start. Single click from starter/solenoid when key turned. Battery new/charged.

I have a duetz-allis mower with 18hp. kohler eng. won't start, have new seloniod, new circuit breaker, getting fire to switch & out. Still won'tstart

Aug 04, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

3 Answers

Starter clicks

i have a yardman riding mower it just clicks when i try to start it it is not the battery and cant find the solenoid

Jul 21, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

Not finding what you are looking for?
Craftsman 42 in. Deck 19.5hp Lawn Tractor Logo

492 people viewed this question

Ask a Question

Usually answered in minutes!

Top Craftsman Garden Experts

Wade Mobley
Wade Mobley

Level 3 Expert

489 Answers

Dean Gruber

Level 2 Expert

110 Answers

Roland W VanLue
Roland W VanLue

Level 3 Expert

486 Answers

Are you a Craftsman Garden Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides