Question about Craftsman 42 in. Deck 19.5hp Lawn Tractor

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Model #247.28901 17.5 HP, 42" mower starter will not engage when ignition switch module is turned to start mode.

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Could you have connected the battery cables wrong?
On most batteries, the + and - posts are marked with large markings. If you connected the battery backwards, that is, the plus (+) cable to ground (-) and the minus cable to the positive (+) post, it will never start. This will make the starter turn backwards, and the gear will not rise to meet the flywheel gear.---------------------
Get the Starter Turning First. From your Description, it Sounds like the Clutch Safety Switch or the Blade Safety went Bad. PLEASE REMEMBER THAT THE INSTRUCTIONS FOR CHECKING THE SAFETY SWITCHES IS JUST THAT!!! FOR CHECKING ONLY. I NEVER Suggest a Mower be Operated with a Safety Device or Switch Disconnected or Bypassed. Now. On Some Model Mowers you can Simply Unplug the Safety Switch from the Harness. On Other Models you have to Place a Jumper Wire Between the Harness Terminals (on the 4 Post Switch Jumper from Same Color Wire to Same Color Wire). Check the Clutch/Break and the Blade/PTO Safety Switches First. Check the Seat Safety Last. Usually the Seat Safety is Not in the System for Starting the Engine. Just to Ensure Someone is in the Seat when Engaging the Transaxle and/or Blades. If these Check Good, then Use your Jumper Cable Set and Attach the Positive Lead Onto the Positive Post of the Battery. Now Firmly Touch the Large Post on the Starter. If the Starter Turns the Engine Properly, Then Check the Solenoid. Firmly Touch the Small Post at the Base of the Solenoid. If The Starter Does Not Turn and the Solenoid Clicks, Then the Solenoid is Bad.
The manual recommends checking the following,
1) weak or dead battery;
2) corroded battery terminals;
3) faulty solenoid;
4) faulty starter;
5) loose or damaged wiring;
---------- If all checks out ok but still the same problem then, the pinion is stuck or locked on the helex on the top of the starter. Remove the starter,,,, Blow off the helex with compressed air, clean, but do not LUBRICATE! Move it up and down to see if it moves freely...if not,,,,replace the assembly.Also check the gear which engage on the flywheel if its cracked then it needs to be rebuilt.The cost of gear is near to $22.---------------- Thanks. Keep updated for any more query. You can rate this solution and show your appreciation.

Posted on Aug 28, 2010

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Craftsman owners manuals model 944608450


1. Check the 30 amp fuse.
2.Check the clutch/brake switch. You need the clutch pedal depressed.
3.make sure the PTO is disengaged Check the ignition switch connector (red and white wires).
4. Check the wires to the ammeter.

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20 hp 42" deck will not turn over. Will start if I


there is 2 to 3 safety switches on there and any one of them will stop it from running. there is one in the seat, one on the engagement of the mower deck and one in the clutch pedal. some models also had an in-line fuse.

Jul 14, 2011 | Craftsman 20 Hp 42" Deck Lawn Tractor

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My craftsman lt 1000 lawn tractor will not start. When I turn the key the starter motor spins but the gear will not raise up and engage the flywheel. Do I need a new starter? (18 hp b&s 42 Inch cut) If...


Starter motor spins, but does not engage
  1. Check the starter motor for a seized or binding pinion gear.
  2. Remove the flywheel inspection plate and check for a damaged ring gear.
  3. Engine stalls immediately when started
    1. Check the ignition switch condition and operation. The electrical contacts in the run position may be worn or damaged. Try restarting the engine with all electrical accessories in the off position. Sometimes turning the key on an off will help in emergency situations, however once the switch has shown signs of failure, it should be replaced as soon as possible.
    2. Check for loose, corroded, damaged or shorted wires for the ignition system and repair or replace.
    3. Check for manifold vacuum leaks or vacuum hose leakage and repair or replace parts as necessary.
    4. Measure the fuel pump delivery volume and pressure. Low fuel pump pressure can also be noticed as a lack of power when accelerating. Make sure the fuel pump lines are not restricted. The fuel pump output is not adjustable and requires fuel pump replacement to repair.
    5. Check the engine fuel and ignition management system. Inspect the sensor wiring and electrical connectors. A dirty, loose or damaged sensor or control module wire can simulate a failed component.
    6. Check the exhaust system for internal restrictions.

May 12, 2010 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Craftsman mower will start with pull but not with


When it turns over, is it somewhat sluggish (not as fast as before)? I would suspect your battery is weak, and the voltage drops so low that the engine does not spin fast enough to start. Also, without knowing what type mower this is (which model) it could be the voltage drops too low to generate spark (if equipped with an ignition module)

Whereby pull starting it, you aren't loading the voltage down with the starter, and the ignition module still works... So it starts.

Charge the battery per the owners manual. If that doesn't help, you may need a new battery, or you may have a bad connection between the battery and starter solenoid (heavy cables). If a connection has high resistance, it will drop more voltage at a given current.

Jul 30, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

2 Answers

Older Craftsman 43" 17 HP Briggs


Check to make sure battery is above 12.3 volts, secondly bypass the solenoid to the starter by using jumper cables and see if the starter works, if so, you sureley have a safety switch problem, I beleive you have five on this model,
good luck

Jul 02, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Starter energizes, won't turn engine.


your battery is in a weak state also the solenoid is shorting out replace the solenoid

Jun 06, 2009 | Poulan 42-Inch Steel Deck 17.5 HP Briggs &...

1 Answer

Engine cuts out when engaging clutch or engaging blades..


lift the seat and make sure the connector is firmly plugged into the seat switch

Jun 01, 2009 | Craftsman 21 hp 42 in. Deck Yard Tractor -...

1 Answer

1998 craftsman mower w/19.5 hp Briggs and Stratton will not fire.


Hello B-N-L:

>>I Suggest you Check the Ign Module First and then the Safety Switches if the Ign Module (Coil) is Good. Remember that the Ign Module May Check Good, but if the Safety Switches Check Good, then Most likely the Coil is in the Early Stages of Breaking Down and will Cause this Problem.
>>You can Check the Ign Module (Coil) by Using the Following Instruction File.
The Following is an Instruction File I Made for Checking and Repairing this Problem.
>>Run the Engine Until it Quits, then Remove the Spark Plug. Wrap a Wire Around the Threads and Attach the Other End of the Wire to the Engine Block Turn the Engine and See if the Plug Fires.
>>If No, then Disconnect the Shut Off Wire at the Control Bracket First, Check for Fire at the Plug. If Still No Fire at the Plug; Then Disconnect the Shut Off Wire at the Coil (usually requires removal of the blower housing) and Check for Fire at the Plug.
>>If No Fire at the Plug , then the Coil/Ign Module is Bad. The Coil/Ign Module to Flywheel Gap is .020in.
>>On Some Model JD Engines, there is a Igniter that Goes Bad and Not the Coil. The Igniter is the Same as an Ignition Module. If the Plug Fires at Anytime During these 2 Checks, then a Safety Switch or Wire May be the Problem. Yes the Engine will Turn Even with a Bad Seat Safety Safety Switch. Usually if the Engine will Not Turn with the Ign Switch; the Blade Safety or Neutral/Clutch Safety Switch is Usually the Cause of this.
>>The Starter Turns and the Engine Doesn't Fire is an Indication of a Bad Coil/Ign Module or a Faulty Blade Safety Switch.
>>The Blade and Clutch Safety Switches Prevent the Starter from Engaging so the Blades or the Mower Does Not Move when the Starter Turns the Engine.
>>The Seat Safety is Designed to Stop the Engine if the Blades are Engaged or the Clutch Safety is Not Engaged when you Leave the Seat.
>>The Following is an Instruction File for the Safety Switch System. Any Input is Appreciated.
>>The Color Code of the Wires May be Different than those I Use as a Reference in the Instruction File.
>>**PLEASE REMEMBER THAT THE INSTRUCTIONS FOR CHECKING THE SAFETY SWITCHES IS JUST THAT!!! FOR CHECKING ONLY.
>>I NEVER Suggest a Mower be Operated with a Safety Device or Switch Disconnected or Bypassed.
>>**Now. On Some Model Mowers you can Simply Unplug the Safety Switch from the Harness. On Other Models you have to Place a Jumper Wire Between the Harness Terminals (on the 4 Post Switch (Clutch/Brake) Jumper from Same Color Wire (Example: White to White) First and then Check for Fire, Now Include the Black to Black Wires if No Fire.
>>Check the Clutch/Brake and the Blade/PTO Safety Switches First.
>>Check the Seat Safety Last. Usually the Seat Safety is Not in the System for Starting the Engine. Just to Ensure Someone is in the Seat when Engaging the Transaxle and/or Blades. Use a Paper Clip or a Short Wire to Make a Jumper.**
>>Use a Volt/OHM/Continuity Meter and Check the Continuity of the Switch. The Meter should Show when the Contacts are Closed and Open. The Meter will Swing All the Way Over when the Switch Contacts are Closed and Swing Back to the Rest Point when the Switch Contacts are Open.
>>If the Safety Switches Check Good, then Check the Ign Module (Coil).
>>Thanks.

Respectfully

John

Apr 11, 2009 | Craftsman 42 in. Deck 19.5hp Lawn Tractor

1 Answer

MY MOWER WANT START


probably a bad starter hit it on on end with something a hammer or rod a few time and try to start it right away. if that works its a bad starter needs replacing

Feb 26, 2009 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

1 Answer

Craftsman Lawn Tractor - Electrical


make sure you mower deck is not still engaged. that might make it not start with that safety switch.

Oct 04, 2008 | Craftsman 17.5 hp 42 in. Deck Lawn Tractor...

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