Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

On our generator all of the red lights are on and it trys to…

Customer Question
On our generator all...

On our generator all of the red lights are on and it trys to start but just bumps the starter a little i can't seem to be able to re set the computer

Mechanic's Assistant: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?

Natural gas powered

Mechanic's Assistant: Do you plan on doing the work yourself?

If i can a while ago i replaced the overheat switch and i seemed to run fine for a couple of months

Mechanic's Assistant: Anything else we should know to help you best?

It is over 10 years old 15 kw

Submitted: 11 months ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Answered in 14 minutes by:
9/7/2017
Technician: Hank F., Technician replied 11 months ago
Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 15,994
Experience: Certified on Onan and Generac generators
Verified

Hello, my name is ***** ***** I am going to assist you with this.

What are the brand, model and serial number of the genset?

Ask Your Own Small Engine Question
Customer reply replied 11 months ago
it's bad weather here can't get that info till tomorrow i know it's 15 kv 1.0 liter kohler engine otherwise i'll talk to you tomorrow
Customer reply replied 11 months ago
can you diagnose it at all tonight?
Technician: Hank F., Technician replied 11 months ago

It's pretty hard to diagnose when I don't even know what it is.

Are you positive it is a Kohler?

Kohler never made a 1L engine that I am aware of.

Ask Your Own Small Engine Question
Customer reply replied 11 months ago
this is probably over 15 years old
Customer reply replied 11 months ago
i am sure
Customer reply replied 11 months ago
i'll run out and see if i can get the model number
Customer reply replied 11 months ago
item #(###) ###-####serial # 38989958 15000 watt @ 62.5 amps guardian series
Customer reply replied 11 months ago
right off the id plate
Customer reply replied 11 months ago
the engine may be something else i use a kohler oil filter that fits
Technician: Hank F., Technician replied 11 months ago

This is a Generac genset.

You have an extra number in the serial number, but I won't need the correction.

The engine is a Generac 990 CC, GT990.

The lights are all on at the control board because you do not have your exercise timer set.

To set the exercise timer, set the switch to AUTO.

Press and hold the SET EXERCISE button until the genset starts (may take 10 seconds or so).

Once the engine starts, you must let it run until it shuts itself down (about 12 minutes). If you shut it off before it completes it's cycle, the timer will not set.

The timer will be set for whatever day and time you do this.

For example, if you set the timer at noon on a Friday, the unit will exercise at noon on Fridays.

If you set it at 10 PM on a Wednesday, the timer will be set for 10 PM on Wednesdays.

If the starter is not cranking the engine, the first thing you need to do is to check your battery cables to make sure the connections are clean and tight.

If the cables are not the problem, your battery is likely too weak to crank the unit. You would need to take the battery in and have it tested.

Do not rely on a voltmeter to test a battery, as even a bad battery can read fully charged with 12V, but not have enough ampacity to do any work.

Ask Your Own Small Engine Question
Customer reply replied 11 months ago
thanks! I'll try to check the battery tomorrow however i can't set the exerciser because the generator won't start i did not check the battery so i'll do that tomorrow thanks that may be the problem!
Technician: Hank F., Technician replied 11 months ago

Let me know how it turns out.

I let you know about the exercise timer so you wouldn't be trying to set it at 10 PM. Your neighbors might not like that.

Ask Your Own Small Engine Question
Technician: Hank F., Technician replied 11 months ago

Was it just a bad battery?

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 Hank F. Your Own Question
Hank F.
Hank F.
Hank F., Technician
Category: Small Engine
Satisfied Customers: 15,994
15,994 Satisfied Customers
Experience: Certified on Onan and Generac generators

Hank F. 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

15,517 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

2,927 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
I have a Generac 17kW automatic standby generator. Our
I have a Generac 17kW automatic standby generator. Our neighborhood had a brief power outage yesterday. The generator turned on as it was supposed to, but it did not supply AC to our house. I checked … read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
My Generac 15 KW Generator will start for 3 seconds and
My Generac 15 KW Generator will start for 3 seconds and shuts off. The red light appears for overheating. I am hooked up to natural gas. Is there a filter on natural gas? … read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
What is the btu of a 12 kw generator, It is 15 years old
We have propane, but we are getting natural gas the gas company wants to know the btu … read more
Kavey
Kavey
86 satisfied customers
I have a 6 month old Generac 25 KW natural gas air cooled
I have a 6 month old Generac 25 KW natural gas air cooled generator that went completely under last week during the La. Flooding you can't see the digital information board because of fogging. I drain… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
What can cause my generator to try to start and not ever fully
What can cause my generator to try to start and not ever fully turn over. I've replaced the battery already.… read more
Curtis B.
Curtis B.
Technician
Associate Degree
15,517 satisfied customers
I have a Guardian (Generac) natural gas, 6 KW generator, now
I have a Guardian (Generac) natural gas, 6 KW generator, now about 7 years old, that does not start for the weekly 'excercise'. I've checked to rubber bellow connection -engine to generator- and it sh… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
I have a 20 kw natural gas generator, it was serviced about
I have a 20 kw natural gas generator, it was serviced about 2 weeks ago. They forgot to put the switch back in automatic. We lost power a little while ago, I put the switch back to automatic, the GFIC… read more
The Home Smithy
The Home Smithy
Home Improvement Repair Consultant
1,890 satisfied customers
I have a Generac Standby generator, model 41094, s/n(NNN) NNN-NNNN
I have a Generac Standby generator, model 41094, s/n(NNN) NNN-NNNN The engine cranks but will not start. I seems to a fuel issue because when I spray some carb cleaner into the intake, it fires and ru… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
We have a 15 kW Generac Guardian standby generator that is
We have a 15 kW Generac Guardian standby generator that is approx. 7 years old. Never any problems with the unit. A couple of days ago the unit came on when there was no power outage in our house. We … read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
we are trying to do start up of 5872 Generac generator. Generator
we are trying to do start up of 5872 Generac generator. Generator starts right up in manual and auto. When we start putting a load on it (2- 15 Amp Breakers) the contactor goes on and off and on and o… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
I have installed a 12 KW generator and the engine runs for
I have installed a 12 KW generator and the engine runs for about 30 seconds then stops with an underspeed error. I googled and I think I need to switch the motor from the Natural gas setting to LP. I … read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
I have a generac 14 kw standby generator that runs on natural
I have a generac 14 kw standby generator that runs on natural gas. It was installed about 15 months ago and never had an issue. It was serviced about 2 months ago and we started experiencing that it w… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
Our one year old 20KW Generac with whole house auto transfer
Our one year old 20KW Generac with whole house auto transfer switch (18 KW on natural gas) ran on natural gas for 125 straight hours during the storm Sandy here in NJ. When I was able to check the oil… read more
Chris
Chris
Senior Mechanic & Technician
Factory Training
826 satisfied customers
I have a Model 58870 (20 KW) generator that I start manually.
I have a Model 58870 (20 KW) generator that I start manually. It starts and 15-20 seconds later stops. The LED indicates underspeed as the reason. It seems like a govenor or gas regulator issue. How d… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
We have a natural gas electric start/manual start 15 kw, 120/240
We have a natural gas electric start/manual start 15 kw, 120/240 volt generac generator. Had it for years and until recently it would run a check once a week for about 10 minutes. It has stopped worki… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
I just relocated my Generac 16 KW natural gas generator - model
I just relocated my Generac 16 KW natural gas generator - model(NNN) NNN-NNNN 120/240 volt from my shop to the house. Bled the gas lines and manually started it - took about 4 attempts of 2 minutes ea… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
I have a Generac guardian 15kw, natural gas generator. It is
I have a Generac guardian 15kw, natural gas generator. It is rated at 13 kw when using it on natural gas. I just purchased this unit and it has about 10 hours on it. When my AC condensing unit try's t… read more
Hank F.
Hank F.
Technician
High School or GED
15,994 satisfied customers
Onan home generator, natual gas, automatic cross over controls,
Onan home generator, natual gas, automatic cross over controls, model 5 CCK----V 5 kw. Installed in 1981, and has been working fine, except now. Has been on 6 month preventive maint. contract. Now it … read more
Al Mancini
Al Mancini
Bachelor's Degree
30 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