Question about Craftsman 20 hp 42 in. Deck Lawn Tractor - CA Model

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My craftsman 917271826 has a safety switch problem it sometimes starts and most of the time it wont. how do i disable the safety switches

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Most of the time this nan be done with a short pieice of electrical wire with a spade connecter at each end. unplug the switch and plug in the wire making a connection between yhe two terminals.

Posted on Oct 04, 2009

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Husqy mower, Honda engine. Carbarator and fuel lines clean. Will start and run for 20-30 seconds then dies out. How can i fix this without a $250+ bill.


Hi Joe, The links below are YouTube videos that might get you out of trouble... Also there's videos down the right side of the links that may help as well....... I hope they help......... CHEERS....
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Apr 28, 2016 | Husqvarna Garden

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I have already checked seat safety switches-good. When tractor is running and brake released stops running, why? Also I have checked PTO switch-good.


Hi Dawn, Does your mower have a safety switch on the brake... The links below are YouTube videos that might get you out of trouble...The 1st video is a craftsman mower that stalls out after driving off..... Also there's videos down the right side of the links that may help as well....... I hope they help......... CHEERS...
shows a craftsman mower with problems....
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How to test lawn mower electrical safety switches....
How to test lawn mower electrical safety switches
Shows all safety switches disabled....
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Apr 28, 2016 | Garden

1 Answer

Wont start


Hi John, The links below are youtube videos that might get you out of trouble... Also there's videos down the right side of the links that may help as well....... I hope these help......... CHEERS..
How to test a lawn mower Key switch....
How to test lawn mower key switch
How to test a solenoid....
How to test lawn mower solenoid
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Apr 25, 2016 | Garden

1 Answer

Why does engine cut back, even though the mower still cuts well?


Hi Anonymous, The links below are youtube video's, I hope this helps....CHEERS..
1st shows a craftsman mower with problems....
Craftsman Lawn Tractor stalling out
2nd shows a craftsman seat safety switch disabled....
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4thHow to test lawn mower electrical safety switches....
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5th How to test a solenoid....
How to test lawn mower solenoid
6th How to test a lawn mower Key switch....
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Apr 16, 2016 | Garden

1 Answer

Soloenoid wiring diagram


Hi Ronnie, These three links below are youtube videos, 1st shows how to test your switches, The 2nd shows how to disable a seat switch and the 3rd shows how to test a solenoid, I hope this helps mate...... CHEERS..

How to test lawn mower electrical safety switches

Seat Safety Craftsman Disablement

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Apr 13, 2016 | Garden

1 Answer

I have a 1998 Craftsman lawn tractor. It will crank but it will not start. Battery is fully charged. I have checked the fuel line and the fuel filter. Both fine. I have also repalced the spark plug. Never...


I am guessing that one of the safety switches is preventing the engine from getting a spark. To test for this, go get an inline spark tester from the auto parts store (about $10). Hook it up and try to start the engine. If no spark, then find your safety switches and clean them with electrical contact cleaner and then blow them out with compressed air. Another option is to replace the switches. The switches are located in the following locations...1. under the seat. 2. On the PTO lever or switch. This is the lever that turns on the blades. 3. On the clutch pedal. This one is usually hidden pretty well. sometimes under the tractor deck, sometimes inside the pedestal behind the engine. 4. On the reverse part of the transmission. (optional) not all mowers have this one.
Dirty safety switches are probably the #1 reason a mower won't start, and also the most costly to have a shop diagnose. If you decide to take it to a shop, just have them replace all the safety switches. It is probably cheaper than paying for 1 - 2 hours of diagnostic time.
Good luck!

Nov 02, 2010 | Craftsman 42" Briggs Stratton 20 hp Gas...

1 Answer

Craftsman mid-engine mower with an inconsistent starting problem


It's usually the seat switch that goes bad. take the switch out and tape the switch button down to see if it will start.

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

2 Answers

My craftsman mower shuts off every time the blades are engaged. What is the problem?


you most likely have a shorted or open safety switch. you did not mention year or model # so I can only guess what configuration you have, but typically there are the following safety switches on a riding lawn mower: clutch/brake on switch (under floorboard at clutch, this allows you to get off the tractor with engine running if brake is applied), Reverse gear safety switch (will shut engine off if attempting to go in reverse with blades on...follow the gear handle rod down to transmission, may be internal or external of differential), there is also usually a disable switch to allow blade operation in Reverse and this is usually relay operated via a button or turn of the key position, Seat safety switch (under seat and usually is disabled via engaging the clutch/brake switch, this switch will kill the motor if you come off of the seat unless brake is applied), and of course a switch that is tied in to tell when blades are engaged (engage handle or PTO switch). It is actually simpler than it sounds and you dont' need to be an electrician to figure it out. start out with a visual inspection of the switches that you can see. I would suspect the transmission position (reverse) switch first, do you have an override? if so, turn it on and see if engine stays running with blades engaged. hope this helps and here is a link to a company that deals mower parts and has alot of great parts breakdown illustrations online. A craftsman is pretty much the same as a MTD or White Outdoor model, so look those up and it will show you the areas where switches are.
http://www.superxpower.com/pages/parts/viewbybrand/55/HusqvarnaPowerEquipment.aspx

Apr 18, 2010 | Craftsman 20 Hp 42" Deck Lawn Tractor

1 Answer

Craftsman riding mower blades will not engage


maybe the safty switch under seat might be starting to go out if that switch doesn't work the blades wont come on at all for safety

Jun 27, 2009 | Craftsman 20 hp 42 in. Deck Yard Tractor

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