Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

Small Engine

My riding lawn mower will not turn over. The battery was

Customer Question
My riding lawn mower will...
My riding lawn mower will not turn over. The battery was bad, I replaced it with a new one and also replaced the solenoid. The engine will turn over if the solenoid terminals are jumped but the engine will not fire. There is power to the starter and power to the switch. I tried checking the switch with a meter and it seems to be ok. Any suggestions?
Submitted: 9 years ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 18 minutes by:
5/17/2008
Technician: DR Hamman, Technician replied 9 years ago
DR Hamman
DR Hamman, Technician
Category: Small Engine
Satisfied Customers: 6,286
Experience: I started working on small engines about 40 years ago. I know them Very Well
Verified
Ok, riding mowers often have a few interlock circuits for safety. These can prevent cranking, and shut down the ignition. The safety circuits are normally attached to the seat, the clutch/brake, and the mowing deck. When you try to start it you should be sitting in the seat. Most mowers have a seat sensor switch, where the mower will not start if you are not in the seat. It may even have a setup where the engine shuts off if you get out of the seat. This is to shut the engine down in the case of a roll over, or accident.

The clutch/brake: most mowers have the clutch, and the brake built into one pedal, while others have no clutch, and only have a brake. Regardless the brake pedal has to be pressed hard down until it stops. This is because there is normally a start inhibit switch that will prevent the mower from cranking unless the pedal is pressed all the way down.

The mowing deck: normally has a safety switch built in that prevent the mower from cranking if the deck is switched to the "ON" position. The deck may even have a circuit to kill the engine if you are not on the seat when the deck is switched on.

So, hop on the seat, fully depress the brake, turn the mowing deck off, and see if it will crank and start. If it will not start then you may have problems with the wiring. You may have other problems with the engine as well.

I hope this helps, 100% satisfaction is my goal. If the answer is not clear, please reply and I will assist you more. When you're satisfied, click on accept. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.
Ask Your Own Small Engine Question
Customer reply replied 9 years ago
I have already gone through those steps:

I sat on the seat, I pressed the brake down as far as possible and nothing happened. I cut the switch out under the seat and wired the wire together. The engine still would not turn over.
Technician: DR Hamman, Technician replied 9 years ago
It sounds like you have two problems if you checked everything in my last post. The reason I mentioned this again is because 95% of the time this is what the problem is, and it is SUPER easy to over look.

You said you jumped the wires under the seat, sometimes they have to be open to make the mower operate, dependent on how it is wired.

Unplug all wires from the engine except the starter. Jump the starter solenoid to crank the engine. The engine should start if it is OK. The way the mower wiring kills the engine is to ground the primary circuit in the magneto. If you unplug all the wiring except the starter, this will prevent the mower from being able to kill the spark to the engine, and it should run when cranked: if there is nothing wrong with the engine. If the engine starts you will have to ground the magneto primary wire, or the plug wires to kill the engine. You can also pull a plug wire but that can shock the lights out of you, so use a very well insulated tool.

As far as the cranking with the key goes, the solenoid should be receiving voltage from the key to trigger it to crank. The small electrical terminal on the solenoid triggers it to crank when you send 12 volts to it. So when you turn the key to crank, it should send 12 volts to the solenoid. Also remember that the solenoid will not work if it is not grounded well.

I hope this helps, 100% satisfaction is my goal. If the answer is not clear, please reply and I will assist you more. When you're satisfied, click on accept. I don't get paid unless you do. A bonus and positive feedback are always appreciated, good luck and Thanks.
DR Hamman
DR Hamman, Technician
Category: Small Engine
Satisfied Customers: 6,286
Experience: I started working on small engines about 40 years ago. I know them Very Well
Verified
DR Hamman and 87 other Small Engine Specialists are ready to help you
Ask your own question now
Ask DR Hamman Your Own Question
DR Hamman
DR Hamman
DR Hamman, Technician
Category: Small Engine
Satisfied Customers: 6,286
6,286 Satisfied Customers
Experience: I started working on small engines about 40 years ago. I know them Very Well

DR Hamman is online now

A new question is answered every 9 seconds

How JustAnswer works:

  • Ask an ExpertExperts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional AnswerVia email, text message, or notification as you wait on our site. Ask follow up questions if you need to.
  • 100% Satisfaction GuaranteeRate the answer you receive.

JustAnswer in the News:

Ask-a-doc Web sites: If you've got a quick question, you can try to get an answer from sites that say they have various specialists on hand to give quick answers... Justanswer.com.
JustAnswer.com...has seen a spike since October in legal questions from readers about layoffs, unemployment and severance.
Web sites like justanswer.com/legal
...leave nothing to chance.
Traffic on JustAnswer rose 14 percent...and had nearly 400,000 page views in 30 days...inquiries related to stress, high blood pressure, drinking and heart pain jumped 33 percent.
Tory Johnson, GMA Workplace Contributor, discusses work-from-home jobs, such as JustAnswer in which verified Experts answer people’s questions.
I will tell you that...the things you have to go through to be an Expert are quite rigorous.

What Customers are Saying:

You did one super job of explaining to me everything there is to know about this fridge. I'm looking forward to asking you questions in the future.

JimmyBagley, IA

Wonderful service, prompt, efficient, and accurate. Couldn't have asked for more. I cannot thank you enough for your help.

Mary C.Freshfield, Liverpool, UK

This expert is wonderful. They truly know what they are talking about, and they actually care about you. They really helped put my nerves at ease. Thank you so much!!!!

AlexLos Angeles, CA

Thank you for all your help. It is nice to know that this service is here for people like myself, who need answers fast and are not sure who to consult.

GPHesperia, CA

I couldn't be more satisfied! This is the site I will always come to when I need a second opinion.

JustinKernersville, NC

Just let me say that this encounter has been entirely professional and most helpful. I liked that I could ask additional questions and get answered in a very short turn around.

EstherWoodstock, NY

Thank you so much for taking your time and knowledge to support my concerns. Not only did you answer my questions, you even took it a step further with replying with more pertinent information I needed to know.

RobinElkton, Maryland

< Previous | Next >

Meet the Experts:

Curtis B.

Curtis B.

Technician

14,332 satisfied customers

have worked on and around most engine models for 35 yrs./Polaris ATV expert

Rick

Rick

Factory Authorized Trainer

4,218 satisfied customers

Outdoor Power Equipment technical trainer since 1990, covering eight states.

Jon K.

Jon K.

Small Engine Diagnostic Expert

2,995 satisfied customers

Gold certified Stihl tech, Service Manager for a rental/repair shop.Certified in most small engines

James W

James W

Small Engine Troubleshooting Expert

2,986 satisfied customers

7 years as Mechanic & Parts Manager for Brother who has Owned Lawn & Garden Repair shop for 35 years

Vince O.

Vince O.

Small Engine Technician

2,853 satisfied customers

Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

Wayne

Wayne

Engine Rebuilder

1,553 satisfied customers

many years on egine rebuilding, lawn mower,roto tiller,Truck,and small engines

< Previous | Next >

Related Small Engine Questions
Why is my heat pump and thermostat not cutting on when my
Why is my heat pump and thermostat not cutting on when my whole home generator kicks on. I have two panels in the garage. One has the heat pump , range and a few other small things. The one next to it… read more
Phil
Phil
Consultant to Engrs, Govt & Contractors
Degree, Mech Engr Technology
3,671 satisfied customers
I just received my Honda 1332 ATD Snow blower. The steering
I just received my Honda 1332 ATD Snow blower. The steering controls are not working properly. The machine will not turn when engaging the steering levers. Is there an adjustment that I can do to corr… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,853 satisfied customers
I have an Ariens model 921013 snow blower. I is a few years
I have an Ariens model 921013 snow blower. I is a few years old. I started it a month or two ago to make sure it was ready for winter. Today when I tried to start it I found the pull rope would not pu… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
Brand new cub cadet 3 stage 357 cc snowblower go to use
brand new cub cadet 3 stage 357 cc snowblower go to use first time and smoke is pouring out and oil dripping from the motor why? … read more
JohnF2015
JohnF2015
High School Diploma
1,167 satisfied customers
Have a craftsman snow thrower 11.5 30' checked oil for first
Have a craftsman snow thrower 11.5 30' checked oil for first time this season had serviced at almost end of last. lots of milky white oil. So water started draining oil up to about 50oz and still goin… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
I have a faIRLY NEW aRIENS SNO THRO THAT IS HARD TO START.
I have a faIRLY NEW aRIENS SNO THRO THAT IS HARD TO START. iT WAS RUNNING THIS SUMMER. CHECKED OIL GAS CARB IF PUMPED TOO MUCH DRIPS ON FLOOR SPARK PLUG IS WET . ON ELECTRIC START GROUND IS MISSING BU… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
LOOKING FOR A REPLACEMENT ENGINE FOR RYOBI RLH 1100 MK 2.
LOOKING FOR A REPLACEMENT ENGINE FOR RYOBI RLH 1100 MK 2 … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
My snowblower won't start. Its new gas. when i replaced the
its new gas. when i replaced the oil and spark plug a few weeks ago it started then but won't now … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
Is there a way to find out where the Ariens Model 920021
Is there a way to find out where the Ariens Model 920021 spark plug is located? the manual says to replace it every year, but I cannot find it … read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I have a Toro Power max 826 blower - won't start. Fuel is
I have a Toro Power max 826 blower - won't start. Fuel is getting to the plug and I have spark at the plug. … read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I am not getting a spark in my plugs. It's a Honeywell 12KW
I am not getting a spark in my plugs. It's a Honeywell 12KW gen. with 600 hours. Which are the possible causes.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I have have a craftsman pro series snow thrower I purchased
i have have a craftsman pro series snow thrower I purchased 2 years ago model number###-##-####and the rear auger shear pin holes don't line up to replace the pin … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
I recently purchased a new snowthrower at the sears in
I recently purchased a new snowthrower at the sears in Newington. It came in a box - I tried very hard to follow the directions as I put it together. It runs great but the augers will not engage - nei… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,853 satisfied customers
How much does this cost. I have a 2011 Troybilt bronco with
I have a 2011 Troybilt bronco with solenoid problem I think I found the solenoid but can not figure out how to get to it … read more
Donald
Donald
Owner / Technician
High School
2,221 satisfied customers
Im trying to change the batteries but cant move the chair
im trying to change the batteries but cant move the chair with the winder … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
I have a 24" TroyBilt snowblower with a tire that went flat.
I have a 24" TroyBilt snowblower with a tire that went flat. It has no inner tube. It fills just like a car tire, and the seals are broken, so it doesn't fill properly. Someone told me just to get an … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
Cub cadet eng model 31ah55lt596 snow blower. starts well and
cub cadet eng model 31ah55lt596 snow blower. starts well and works perfectly for about 15 min then drops to a low rough idle kind of sounds like an old hit & miss engine with backfiring, engine speed … read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
We have a single stage Briggs and Stratton snowblower that
Second opinion] We have a single stage Briggs and Stratton snowblower that we bought last year, however we can't get it started this year. How do you drain the gas … read more
JohnF2015
JohnF2015
High School Diploma
1,167 satisfied customers
Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Disclaimer: Information in questions, answers, and other posts on this site ("Posts") comes from individual users, not JustAnswer; JustAnswer is not responsible for Posts. Posts are for general information, are not intended to substitute for informed professional advice (medical, legal, veterinary, financial, etc.), or to establish a professional-client relationship. The site and services are provided "as is" with no warranty or representations by JustAnswer regarding the qualifications of Experts. To see what credentials have been verified by a third-party service, please click on the "Verified" symbol in some Experts' profiles. JustAnswer is not intended or designed for EMERGENCY questions which should be directed immediately by telephone or in-person to qualified professionals.

Show MoreShow Less

Ask Your Question

x