QuestionMotor is on a Craftsman mower. I checked for spark with a screw driver in one of the cylinder spark wires close to ground and no spark. I accidently touched the ground with the screwdriver in the spark wire and the second cylinder fired. ???? Whats going on here? I cannot get this to start. Brake is on, Blade disengaged. Seems backwards. Motor Mod # 42E707, Type# 2631 E1, Code # 9810225B
AnswerHello Shane:
>>Sorry for the Delay. This Question was Located in the Question Pool and I can Only Answer Questions from the Question Pool when I am Not Answering My Questions here or at the Other Site I Answer Questions at.
>>You can View a Breakdown/IPL of this Engine at this Site Addy, http://www.smallenginepartswarehouse.com/parts.asp and Select the Shop Online Parts Look Up. Then Select the Model Tab. Then Select the OEM and Enter the Model (5 or 6 Digits) and Type Numbers. Example: XXXXXX-XXXX. Then Double Click on the Model in the Results Area. Select Sectional Index. Now you can Select the Section of the Engine you Wish to View.
From your Description it Sounds like the Ign Coil/Magnetron is Bad and Requires Replacing.
>>The Following is a Basic Instruction File I Made for Checking the Coil/Ign Coil/Magnetron/Armature on Small Engines. Any Input is Appreciated.
>>If the Unit Runs and Quits after 5 Minutes to 3/4 Hrs and will Restart after the Unit Cools (sometimes as little as 30min), then
>>Check for Spark as Soon as the Engine Quits.
>>Have a Good Plug with a Wire Around it Ready and when the Unit Quits Running, Remove the Plug Wire and Attach it to the Standby Plug. Check for Fire.
>> ***Be Careful, The Engine and Plug are Hot and I Suggest you Wear Gloves.***
>>If the Plug is Firing , then
>>Remove the Spark Plug from the Engine and USE IT to Check for Fire.
>>Sometimes a Spark Plug can have a Problem with Not Firing when Hot.
>>**To Check the Ign Coil if the Engine is Not Starting and Running at All; Remove the Spark Plug/s.
>>With a Good Plug, Wrap a Wire Around the Threads of the Plug and Attach the Other End of the Wire to the Engine Block.
>>Check for Fire at the Plug. If No Fire, then
>>Remove the Blower Housing (metal engine cover).
>>The Wire that is Connected to the Coil/Ign Module from the Shut Off Switch needs to be Removed (unplugged) from the Coil/Ign Module.
>>Now Check for Spark at the Plug.
>>If Spark, then the Shut Off Switch or the Wire is Bad.
>>If Still No Spark, then the Coil/Ign Module is Bad. If there are Safety Switches on this Unit and the Coil is Good; you Need to Check the Safety Switches for Being Bad and Check the Oil Guard Switch also.**
>>Your Engine has 1 Coil with 2 Leads. One Half of the Coil may be Bad and Allowing Only 1 Plug to Fire.
>>If you Check the Ign Coil Properly and it is Good, then Let me Know and we can Continue on with More Diagnostics.
>>If you Hit a Snag or this Does Not Correct the Problem, I Hope to be Here if You Require More Assistance. Hope this Helps. Let me Know What Happens, Please. May the All Mighty Bless You and Yours. Be Safe and Happy. Thanks.
Good Luck
Respectfully
John
PS: I am Allowed to Answer 3 Questions a Day. If you See I am Maxxed Out, then Try Submitting your Question at or Just After 8pm EST (US). My New Day Starts then. All Follow up Questions are Accepted at Any Time. Comments and Ratings are Greatly Appreciated. Thanks.
Respectfully
John
