Craftsman B&S 19.5 and Kohler 15.5 won't start

10 years ago

Mownie sounds like the one who can help me with a very similar problem to the previous help for B&S 19.5. This is what I posted on another forum , but have not received any replies: Model 271022 has the Kohler 15.5hp CV15S and model 727810 has the B&S twin 42E707 19.5hp. Kohler began shutting down and eventually backfiring when trying to restart. I cleaned the carb, changed the plug and checked the coil. Found the coil was in spec, but no spark. Disconnected the kill wire, had spark and was able to start it one time. Second attempt a while later and it wouldn't even turn over, nothing. Checked wiring for breaks all looked good. Checked safety relays both good. Checked starter switch, good. Jumped between solenoid terminals, engine will crank. Now the kicker. The B&S did exactly the same thing 2 weeks ago. Was able to crank over one time then the same as the Kohler. What am I missing? Something in the safety wiring? Any suggestions most appreciated. Am I living over an old burying ground?

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Comments (4)

walt2002
10 years ago
How about something in the gas?

Walt Conner
mownie
10 years ago
I'm thinking..........
And you need to double check your model number entry for 917.727810.
Sears site tells me there ain't no such animal.
And until I can see both schematics, it is going to be hard to say if there is any way the 2 different machines might possibly have a common problem.
I see that the 917.271022 model features 2 operator presence relays, so that can make trouble shooting....trouble some (for some folks).
So I hope you have a VOM (volt/ohm meter). We should be able to guide you through some testing.
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bill_kapaun
10 years ago
I'm guessing the 2nd one is a 270810?

Hopefully, you'll split these 2 machines into 2 separate threads.
Things may get quite confusing if talking about similar problems, but 2 machines.

Things to do for both-
Get the battery charged & load tested. One good battery would probably work for both IF it's KNOWN to be good.

Check the fuse!

Jumper 12V directly to the small terminal on the starter solenoid.
IF the engine cranks, the battery, starter motor & solenoid are good and the problem is between the key switch & solenoid.

Report back with the results.

On the Kohler,the carb fuel solenoid should click when the key is turned ON.
With the key ON, manipulating the seat switch should make BOTH OPR's (Operator Presence Relay) click.

Do you have the Owners Manuals?
If not the one for the Kohler is -
http://www.managemyhome.com/mmh/lis_pdf/OWNM/98120017.pdf

IF I guessed the correct model number for the Briggs, it's here-
http://www.managemyhome.com/mmh/lis_pdf/OWNM/98100087.pdf

IF I didn't, post it so we aren't spinning our wheels over an incorrect schematic.
britcar
Original Author
10 years ago
Sorry again....This is my first time on the forum so bare with me. I can see the confusion, so I will split these and we can approach them one at a time. Start with the Kohler as it was running a couple of days ago. Will start the thread under Craftsman 271022 with Kohler 15.5 hp CV15s won't start. I have a meter and the Kohler repair manual pdf. Will check the battery and other stuff tomorrow. Thanks for straightening me out. Will post the B&S after success on the K and correct the model # then.