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Adjust the blade belt
As good luck would have it, I have one of these mowers.
As I see it, there are only two adjustments possible:
1) the for/aft positioning of the mower deck as determined by the length of the central front deck positioning rod.
2) the amount of tension on the spring that holds the engage idler against the belt. That can be changed by moving the bracket that anchors the spring.
I've had my unit for several years now and replaced blades, spindles, and pulleys (I mow far too many rocks) but never had to adjust the blade drive belt.
Hope this helps
Craftsman 42 in....
on Jun 26, 2015
1998 craftsman mower w/19.5 hp Briggs and Stratton will not fire.
>>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).
Craftsman 42 in....
on Jun 11, 2015
Craftsman model 917-258870 can the trans fluid be
The fan and cooling fins of transmission should be kept
clean to assure proper cooling.
Do not attempt to clean fan or transmission while engine is
running or while the transmission is hot. To prevent
possible damage to seals, no not use high pressure water
or steam to clean transaxle.
, Inspect cooling fan to be sure fan blades are intact and
o inspect cooling fins for dirt, grass clippings and other
materials° To prevent damage to seals, do not use
compressed air or high pressure sprayer.
TRANSAXLE PUMP FLUID
The transaxle was sealed at the factory and fluid maintenance
is not required for the life of the transaxle. Should
the transaxle ever leak or require servicing, contact your
nearest authorized service center/department.
Craftsman 42 in....
on May 30, 2015
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