Small Engines (Lawn Mowers, etc.)/honda to briggs and straton


QUESTION: I have a craftsman lawn tractor model 917.273500 that came with a GXV530 Honda engine. Have changed the Honda to a briggs and stratton engine.Can you tell me how to change the wires so that it will start with key switch. and charge the battery. The Honda plug has blue , white , black ,and brown wires on plug from tractor. The briggs engine has a plug with red ,orange , black and gray wires. Any help will be most appreciated. Thank you and please help.

ANSWER: Have you read the guide at the URL below and identified which Briggs charging system you have?

Can you attach a picture of the Briggs plug and the Honda plug?

Which key switch do you have?  How many pins are on the key switch?

Do you have a multimeter to measure voltage/


---------- FOLLOW-UP ----------

QUESTION: The key switch starts the motor and controls the lights. In all the key switch is the only switch. The tractor does have an amp meter. The output of the briggs and Stratton motor is 9 amps. Motor number model is 331977-0001-g1. There is a red cable that went to the Honda starter. You cannot connect a hot wire to the starter on briggs engine ,but there must be a switch built in the starter on the briggs engine. It has a plug with four wires. The plug on the tractor also has four wires but it will not fit the plug on the briggs.If I can get the tractor to crank charge and shut off with the key switch I can install a separate switch for the lights. Thanks again and please reply.

Does the key switch have 7 posts/pins?

Download the manual so you can view the wire schematic:

The pins will all be labeled.  When wiring the mower I would start with the big starter wire and connect to the Briggs starter...there should only be one big wire connected to the starter.

Next I would make sure the S pin wire is connect to the starter solenoid.

From what I found on the internet the Honda engine starter solenoid is build part of the starter.

The Briggs and Stratton engine should not have a starter solenoid as part of the WILL HAVE TO INSTALL a starter solenoid.

Please CONFIRM if the Briggs engine has a starter solenoid or not.

IF NOT, you will need something like this:

You will probably have to cut and install connectors on the positive battery cable to install a starter solenoid and you will have to run the solenoid wire from the front of the engine to where ever you mount the starter solenoid.

Let me know if the Briggs has a starter solenoid or not.  You can send me the Briggs model and type number and I can look up the starter.


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Eric A. Jones


Lawnmower Repair . Certified Master Service Technician from B&S. Have 23 years experience on B&S, Lawn Chief, Weed Eater, Echo, Peerless, Wheel Horse, Snapper, Atlas, MTD, McCulloch, Homelite and many other numerous brands. Specialize in electrical repair.


Born and raised in the midwest. Started tinkering with engines when I was about 14 on my Suzuki RM-80. I began lawn mower repair at a small hardware store. I knew absolutely nothing. I read lots of repair manuals and met an older fellow who taught me many lessons. I continued working on small engines through high school and paid my way through college working on mowers at the same hardware store. Decided to get away from the midwest and mower repair so I joined the Air Force. I repaired air traffic control electronic equipment and ended up in Hawaii where I got a part time job at Small Engine Clinic. I gained a lot of experience from the Small Engine Clinic and had a blast repairing small engines. I then took the Briggs and Stratton Master Service Technician test and earned my MST. I then traveled to Wisconsin where I attended the factory update training seminar and received formal training. Continued working on mowers part time as I completed 20 years of military. Retired from the military on a Friday and continued in the lawn and garden industry the next Monday.

MAS Aerospace Operations BA Mathematics AAS Electronic Communications AAS Electronic Technology

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