Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

I have a toro model 20042 sr-21S lawn mower. I don't get any…

Customer Question
i have a toro model...
i have a toro model 20042 sr-21S lawn mower. I don't get any spark when using a clamp on ignition tester. i replaced the magneto coil and i still don't get a spark. please help
Submitted: 3 years ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 5 minutes by:
6/5/2015
Technician: Vince O., Small Engine Technician replied 3 years ago
Vince O.
Vince O., Small Engine Technician
Category: Small Engine
Satisfied Customers: 2,938
Experience: Over 30 years experience repairing lawn and garden equipment. Chainsaws, mowers,blowers and trimmers
Verified
Hello, is the control cable kinked at all?
Ask Your Own Small Engine Question
Customer reply replied 3 years ago
contreol cable isnot kinked
Technician: Vince O., Small Engine Technician replied 3 years ago
Is there spark if you put the plug in the plug wire and ground the plug on the engine while someone pulls the rope?
Ask Your Own Small Engine Question
Technician: Vince O., Small Engine Technician replied 3 years ago
I have already found a pinched wire spot in the kill wire going from coil to the shut off switch.it was under the thinner metal breather tube.
Ask Your Own Small Engine Question
Customer reply replied 3 years ago
i have tested for spark with a spark tester that clamps to engine. i have replaced the magento coil w/o the kill switch connected. no spark
Customer reply replied 3 years ago
the rope starter and housing are removed. i turn the flywheel by hand.
Technician: Vince O., Small Engine Technician replied 3 years ago
I would still try using a plug to look for a spark. Turning by hand may not be good enough
Ask Your Own Small Engine Question
Customer reply replied 3 years ago
can you contact me by phone
Technician: Vince O., Small Engine Technician replied 3 years ago
Did you put the starter on and check for spark?
Ask Your Own Small Engine Question
Was this answer helpful?

How JustAnswer works

step-image
Describe your issueThe assistant will guide you
step-image
Chat 1:1 with a technicianLicensed Experts are available 24/7
step-image
100% satisfaction guaranteeGet all the answers you need
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 15,342
15,342 Satisfied Customers
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert

Curtis B. 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

15,342 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

2,938 satisfied customers

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

Wayne

Wayne

Engine Rebuilder

2,041 satisfied customers

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

RUSS

RUSS

SERVICE TECHNICIAN

1,723 satisfied customers

28 YEAR SERVICE TECHNICIAN

< Previous | Next >

Related Small Engine Questions
Model 191707 runs mabey 10 min. when cold and the stops. Let
Model 191707 runs mabey 10 min. when cold and the stops. Let it cool for an hr. or so, starts up and runs a while and stops … read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I can't start my lawn mower. 2002 it was bought I think.
I can't start my lawn mower. 2002 it was bought I think. toro 21" 20042 SR-21S Started up fine last year each time. It's been sitting all winter. Has enough oil but I didn't change it. Filled it up wi… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a Toro 22" recycler lawn mower Model 20074. The mower
I have a Toro 22" recycler lawn mower Model 20074. The mower will not start. I have replaced the spark plug and coil and I still get no spark. Is there anything I missed. I don't know what is under th… read more
Donald
Donald
Owner / Technician
High School
2,586 satisfied customers
I have a lawn boy lawnmower with a kohler engine, no
I have a lawn boy lawnmower with a kohler engine, no spark..... spark plus replaced, still no spark, isolated magneto and still no spark, replaced magneto.... still no spark, any ideas???… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a craftman riding lawn mower, its a older model 14.5
I have a craftman riding lawn mower, its a older model 14.5 hp. when i cut grass for about 45 minuts it will shut off. after I let it set for a while it will start back up and run for a while and then… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a 12.5 hp Onan engine on a Toro lawn mower. It will
I have a 12.5 hp Onan engine on a Toro lawn mower. It will not shut off using ignition switch.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I replaced the magneto and plug on my &S lawn mower and still
I replaced the magneto and plug on my B&S lawn mower and still no spark, even with the kill wire disconnected. The flywheel has one magnetized area. Should there be two, 180 deg. from each other?… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
Need help with my DIY repair. My Troy-bilt 21" self propelled
Need help with my DIY repair. My Troy-bilt 21" self propelled mower, (Briggs & Stratton 675 series 190cc) will only run for a short time when cold. it will auto shut down and not restart. Plug is clea… read more
Dieseljunky2
Dieseljunky2
Locomotive Mechanic
Ford Certified Technician
310 satisfied customers
How can I test the BSP-793281 ARMATURE-MAGNETO to eliminate
How can I test the BSP-793281 ARMATURE-MAGNETO to eliminate why my BriggS Stratton 10L802 1078 F1 will not start?… read more
Chris
Chris
Senior Mechanic & Technician
Factory Training
826 satisfied customers
I have a Craftsman rear engine lawn mower that will not start.
I have a Craftsman rear engine lawn mower that will not start. It's getting gas and is turning over but doesn't seem to be getting any spark.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a Sears 6.0 HP Gold 22 Inch Self Propelled Lawn Mower,
I have a Sears 6.0 HP Gold 22 Inch Self Propelled Lawn Mower, engine - BS 6.0 Hp, Model - 12H802, Type - 1534-21 Code – 96062058. The numbers on the actual mower are - Sears Numbers - Model -NNN-NN-NN… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,342 satisfied customers
I have a B&S model# XXXXX Type 0818-04 Code 75031-11 engine
I have a B&S model# XXXXX Type 0818-04 Code 75031-11 engine on a Montgomery Ward riding lawn mower. I have no spark. I have replaced the magneto twice with new and different magnetos. I replaced the d… read more
TaxTom
TaxTom
Accountant
Bachelor's Degree
14 satisfied customers
The lawn mower when cold starts great,when hot it just has
The lawn mower when cold starts great,when hot it just has to cool down. The temperature was 72 degrees outside. No pumping gas or spraying gas in to the carbeurator Please Help 20042 Model Number XXX… read more
RUSS
RUSS
SERVICE TECHNICIAN
Vocational, Technical or Trade Scho
1,723 satisfied customers
I have A Murray riding lawn mower, with Model # XXXXX
I have A Murray riding lawn mower, with Model # XXXXX Briggs and Stratton. I have replaced the armature-magneto, and wondering if there is a setting, maybe called an air gap between the armature and f… read more
Dieseljunky2
Dieseljunky2
Locomotive Mechanic
Ford Certified Technician
310 satisfied customers
How can I adjust the engine speed on my Toro personal pace
How can I adjust the engine speed on my Toro personal pace mower? I was cutting my grass when the speed dropped to a crawl speed. Thanks It's 10 yrs old Model # XXXXX Make SR-21S I located the idler l… read more
J.R.
J.R.
Vocational, Technical or Trade Scho
7,173 satisfied customers
Have a Briggs & stratton 5hp horizontal engine on Toro walk
Have a Briggs & stratton 5hp horizontal engine on Toro walk behind mower. No spark. Changed spark plug, checked gap. Does it need a new Magneto? Do these engines still have points or is it all electro… read more
CJBennett
CJBennett
Owner of Power Equipment Shop
Vocational, Technical or Trade Scho
619 satisfied customers
I have a Toro walk behind mower that when the blade stop is
I have a Toro walk behind mower that when the blade stop is released the mower will not stop. Mower cranks and runs great, just won't stop. When the blade stop is released the Magneto is getting a gro… read more
ranwell1
ranwell1
CEO
High School or GED
5,039 satisfied customers
We own a 22 Toro 6.5 hp Recycler lawn mower. Last week,
We own a 22'' Toro 6.5 hp Recycler lawn mower. Last week, the lawn mower started just fine, but this week we have changed the spark plugs, oil, and air filter and it doesn't start. When we were mowing… read more
ranwell1
ranwell1
CEO
High School or GED
5,039 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