Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

Small Engine

I have a 316 John deere, When I turn the pto switch on it instantly

Customer Question
kills the engine. I have...
I have a 316 John deere, When I turn the pto switch on it instantly kills the engine. I have bypassed all safety switches, using jumper cables to attach power directly to the pto clutch, and it still kills the engine. I have went through all adjustments that I know of. I have adjusted the coil to make sure it isn't touching the rotor, adjusted the air gap to 0.18. I even bought a new coil and it does the same.
Submitted: 2 years ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 4 hours by:
6/6/2015
Technician: Rex L., Small Engine Technician replied 2 years ago
Rex L.
Rex L., Small Engine Technician
Category: Small Engine
Satisfied Customers: 761
Experience: auto-diesel graduate. small engine and John deere and silver certified in stihl.
Verified
Let me ask this. Have you tried it with the belt off pto? If there is something froze up or blade stuck on deck it will kill the engine.
Ask Your Own Small Engine Question
Customer reply replied 2 years ago
Yes, it does the same with or without the belt. I stopped putting the belt back on after the first few times because it is one less step between adjustments. I am a mechanic, and I am lost on this thing.
Technician: Rex L., Small Engine Technician replied 2 years ago
Make sure you have the seat switch bypassed like you say you do. It acts like there is a short somewhere in the system in the pto or in the wiring. But you bypassed the wiring with a jumper to the pto from battery. Acts like pto is shorted.
Ask Your Own Small Engine Question
Customer reply replied 2 years ago
Yes, I ran a jumper from a seperate battery also, it still kills the engine. If I hook the hot direct to the pto lead and just tap the ground on the frame I can get the deck to run full speed, but as soon as it goes full contact it kills it. I agree it does sound like the coil is shorted. I ohmed it and it is 4 ohms. I think I read 3-4 ohms is good. I also checked my old coil and it is 4 ohms also. With just the coil on the engine I can power it up just fine. As soon as I put the rotor and pressure plate on is when it dies. I am not sure how much air gap there should be between the coil face and the rotor, I can't see where it has touched anywhere, and I have tried different shims. This is a mower that I did a engine swap on. The old kohler had something inside it that wanted out. It kept knocking but I didn't let it out. I put a 22 horse Honda clone engine on it. This clutch worked fine on the Kohler. The only thing different is the shoulder on the crank is futher out on this engine. I shimmed the coil out and didn't use the spacer that was on the end on the crank on the kohler.
Technician: Rex L., Small Engine Technician replied 2 years ago
Didn't know we were working on and engine swap. I will opt out and see it another expert has any ideas. 4 ohms should be correct.
Ask Your Own Small Engine Question
Customer reply replied 2 years ago
Ok. Thank you
Technician: Rex L., Small Engine Technician replied 2 years ago
Have a good day
Ask Your Own Small Engine Question
Technician: Ranwell1, Small Engine Technician replied 2 years ago
Ranwell1
Ranwell1, Small Engine Technician
Category: Small Engine
Satisfied Customers: 10,304
Experience: I Own a Lawn Mower Sales and service business (37years). Have 2-cycle and 4-cycle certification.
Verified
This problem is pretty simple to diagnose but next to impossible to fix.
The problem is that since the crankshaft on the replacement engine is different than the old one, it is locking up when you are assembling it. Spacing it out may not be the fix, you may need to get a different PTO, but which one is going to be very difficult to figure out. This is why we usually tell customers to only replace an engine with an exact duplicate of the one taken off.
You sill don't have the spacing correct.
I wish I had a better answer for you but this is all I have for you at this time.
Please let me know what you find.
Ask Your Own Small Engine Question
Customer reply replied 2 years ago
It is not locking up. I have found measurements and everything is close enough to work. The problem is that the clutch is magnatizing the crankshaft, and that is messing up the magnetic trigger on the ignition. I am going to try to find a different clutch, and try to demagnify the crank.
Customer reply replied 2 years ago
Do you happen to know how I can remove this post?
Technician: Ranwell1, Small Engine Technician replied 2 years ago
No. it just stays up until it goes off buy itself, I think it goes off once you have given a good rating..
I have never heard of the crank getting magnetized.
Ask Your Own Small Engine Question
Ask Ranwell1 Your Own Question
Ranwell1
Ranwell1
Ranwell1, Small Engine Technician
Category: Small Engine
Satisfied Customers: 10,304
10,304 Satisfied Customers
Experience: I Own a Lawn Mower Sales and service business (37years). Have 2-cycle and 4-cycle certification.

Ranwell1 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
I can't pull the stared cord on my snow blower and the
Hi, I can't pull the stared cord on my snow blower and the electric start doesn't work either … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,489 satisfied customers
Honda eu6500is Error code is e-22 I'm suppose to refer to
Honda eu6500is Error code is e-22 I'm suppose to refer to the "service bulletin #42" but can't find that info anywhere online… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,853 satisfied customers
Series NumberFault Message 1902. Under voltage. When
Series Number(###) ###-####Fault Message 1902. Under voltage. When selected OFF, battery fault message illuminated. how to reset please … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,362 satisfied customers
My Poulan Pro 24" cas primer does not send gas to the
My Poulan Pro 24" cas primer does not send gas to the carborator. I tested the spark plug and it works. Any suggestions? … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
I had to put a new ignition switch on my gravely. I wired it
i had to put a new ignition switch on my gravely. I wired it the same as the old one and it wouldn't start. I had no spark. One terminal someone had connected a second wire so on a hunch i cut that wi… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I have a part number for a dip stick for a onan the parts
I have a part number for a dip stick for a onan the parts number is(###) ###-####.I cant find this any were … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,489 satisfied customers
Toro snow blower 721e I can prime it and that will fire but
toro snow blower 721e I can prime it and that will fire but will not continue to run … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
Have a craftsman gas lawn mower mo. # 917.388280.starter
Second opinion] have a craftsman gas lawn mower mo. ####-##-####starter pull rope jams up or does not retract when trying to start… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
Can my poulanpro 50 be c0nverted to a larger chissel chain
can my poulanpro 50 be c0nverted to a larger chissel chain it has a 3/8 now. … read more
JohnF2015
JohnF2015
High School Diploma
1,168 satisfied customers
I can not find the learn button on the opener, About 30
the model number on the remote is 953EV/EVC. I see an orange button on the back of the oper, but it is an erase button … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
999 satisfied customers
I have an Aries snowblower 921038 ser104336 only 2 years old
I have an Aries snowblower 921038 ser104336 only 2 years old only used twice but I never drained fuel over those when I first started it started right up but it surges so I drained the tank and put ne… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
How do I start the 24 inch snow blower. And OIL. I am not
Of course. I am 68educated but not mechanically inclined. I just cannot remember how to get it started.t … read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I have a model 13an77kg011 my son ran out all the oil and
hi I have a model 13an77kg011 my son ran out all the oil and now it sounds bad and black smoke coming out the muffler it has 17.5 eng now what can I get to replace it with … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
I have a squal 2100 208 cc will not start. I changed the
I have a squal 2100 208 cc will not start. I changed the gas, I put gas down the spark plug chamber and it will start for 2 seconds. … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,553 satisfied customers
We just got our snowjoe 18 inch 40v max snowblower. It went
We just got our snowjoe 18 inch 40v max snowblower. It went on and worked for a while but then wouldn't go on after stopping it to clear away snow. Is there a trick to getting it started again? The ba… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 satisfied customers
I have a generac 12k propane genset. it was running fine,
Hi, I have a generac 12k propane genset. it was running fine, but won't start after being moved. the feed line is 3/8". that might be the problem. … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,362 satisfied customers
Generator won't make 120 or 220 volts. Generac 20 years it
generator won't make 120 or 220 volts JA: What's the make and model of the generator? And can you guesstimate how old it is? Customer: generac 20 years it is a 6500 JA: Do you plan on doing the work y… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,362 satisfied customers
I have a Honda E 2000 generator while running last weekend
I have a Honda E 2000 generator while running last weekend and it shut off and it would not restart checked feel was OK noticed no electrical spark when I pulled it over any thoughts… read more
Curtis B.
Curtis B.
Technician
Associate Degree
14,332 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