Small Engine

Small Engine Troubleshooting Problems? Ask a Mechanic Now.

Ask an Expert,
Get an Answer ASAP!

Small Engine

I have a craftsman 9 HP snow blower. It has a Tecumsehmotor

Customer Question
I have a craftsman 9...
I have a craftsman 9 HP snow blower. It has a Tecumseh###-##-####motor on it. I had the carb rebuilt at a local small engine shop but when I started it up it "loaped" for a bit and then started spurting/back firing intermittently. There was also a glow in the muffler with the occasional spark.
JA: Thanks. Can you give me any more details about your issue?
Customer: Like what I thought I explained it pretty clearly.
JA: OK got it. Last thing — Technicians generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.Category: Small Engine
Show More
Show Less
Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I bought this snow blower second hand. I put the throttle linkages back into the holes they came from but I cant speak for the previous owner. The blower runs and operates but is not idling right. The sputtering/back firing is still present.
Answered in 37 minutes by:
2/27/2016
Technician: Curtis B., Technician replied 1 year ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,471
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Carburetor is a none adjustable model. Only adjustment is idle speed. The needle valve and float, control the fuel flow into the bowl.

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

With this engine, you may have a valve sticking or that needs to have some clearance. Problem with that, is the valves have to be removed from the block and ground off to add clearance.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I may have a valve sticking.
Technician: Curtis B., Technician replied 1 year ago

You can check valve clearance by removing the valve cover, that the vent hose comes off of, and see if valves are too tight. .006 will be good. Zero causes problems.

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Service manual.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I have already found this online. I will look into it here and be back with you in a minute.
Technician: Curtis B., Technician replied 1 year ago

OK>

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Can you be more specific concerning the valve cover please
Customer reply replied 1 year ago
I looked through the manual before this conversation and just now and still have not seen a diagram/any other information that applies directly to what im after
Technician: Curtis B., Technician replied 1 year ago

Engine breather page 87, is where you remove and check valve stem and springs for clearance between valve stem and lifter.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
ok thanks i will look into that quick here
Technician: Curtis B., Technician replied 1 year ago

OK>

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
basically I'm going to have to take apart the whole motor to see if the valve may by flush or may not in which case I would be back at square one?
Technician: Curtis B., Technician replied 1 year ago

You can check them, but not adjustment them without disassembly!

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I have a side mounted breather. Such as in Figure 49 on page 87 but after taking it apart I still dont understand how this helps me. I dont see any valve such as in the other diagram.
Technician: Curtis B., Technician replied 1 year ago
Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

#172 is the cover shown for your engine, the cover and baffle have to be removed, and you should them see the valves and springs and lifters

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Take it off, go deeper!

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
ok i will be back in a minute
Technician: Curtis B., Technician replied 1 year ago

OK>

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Thats it. The valve stems and the lifters, You want to measure the gap between stem and lifter. Use feeler gage and see if you can slip at least .004 between the two parts, you will have to turn engine until the valves are closed,

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I dont have a feeler gage. perhaps I can get one tomorrow?
How do I turn the engine with that sort of accuracy?
And you know when they are closed because they are in the lowest position they can be?
Technician: Curtis B., Technician replied 1 year ago

Accuracy is not that close. You can turn engine and hold gage against the two parts, if there is clearance ,the gage will slip through when valve reaches its lowest point. As long as it has clearance it should work, and not cause the misfire. Zero is when it causes the problem/

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Im sorry and maybe im being dense but I still dont fully understand where exactly Im supposed to be measuring.
Customer reply replied 1 year ago
or with what. I dont have a feeler gauge
Technician: Curtis B., Technician replied 1 year ago
Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Here is Utube video.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
if I can get a feeler I can check that.
If it does not have clearance than I need to take the head off. Remove the stem and grind it down a bit.
What if it does have clearance?
Customer reply replied 1 year ago
I will have access to a feeler gauge tomorrow.
Technician: Curtis B., Technician replied 1 year ago

You can still have valve problem, valves may not be seating, and would need to be reseated.

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

I will be here tomorrow , most of the day. Let me know what you find with clearance.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
ok how do I contact you? I have not used this before.
Technician: Curtis B., Technician replied 1 year ago

There will be a link in your Email to get back.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
ok cool.
Technician: Curtis B., Technician replied 1 year ago

Good night!

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
Ok so here are some pics of when the stems are up. Even when the stems are up there is no gap. they travel through the bottom.
Also I removed the belt cover to be able to turn the shaft easier and I noticed that at a certain point it became very hard to rotate. There was a good deal of resistance. It will of course make the full rotation.
Technician: Curtis B., Technician replied 1 year ago

Only time there would be a gap is when the valves are all the way down. When you were turning engine, did you have spark plug removed? If not you were feeling the compression. But with no gap, the valves need to be (adjusted).

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I watched the youtube video 3 more times and the best I can see is that the stems in the video stops before the bottom of the box. He slides the feeler gauge between the bottom of the box and the bottom of the stem to get the measurement. However in my case as shown in the pictures, the stem goes through the bottom of the box. I took the picture while the stems are up to illustrate this. Or am I missing something?
Customer reply replied 1 year ago
Its also my understanding that I could also take the engine apart and see if the stems rotate. If one or both of them do then I would know that they are sitting against the bottom and need to be ground down. Right?
Technician: Curtis B., Technician replied 1 year ago

The bottom part of the (stem) is the lifter, the upper part is the valve, you have to measure the distance between them, Take a screw driver and lift up on the valve spring to see the gap. Then you will know where the measurement is made, between the two parts!

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
OK I think I have a bead on it now. When the lifter presses up of coarse there would be no gap. Im going to go get the gauge and check it.
Technician: Curtis B., Technician replied 1 year ago

Correct!

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
One of the things that confused me is that in the youtube video the lifters are flush with the bottom but with mine they are elevated. I found the separation point and will be proceeding to the store shortly to get a gauge. My gut reaction is that they are flush but I cant be sure till I get the gauge. If that is the case then I have to pull it apart, get the head off, get a spring puller and remove the springs to remove the valves and then grind them down a tiny bit. Presuming that this will be the outcome how would you advise I grind them down?
Customer reply replied 1 year ago
Do you think I will need to replace any gaskets after the disassembly? Such as for the head?
Customer reply replied 1 year ago
Or are they usually reusable if you are careful?
Customer reply replied 1 year ago
I got the feeler gauge and could not get even the smallest between them. As per my previous questions, how do you think I should go about grinding down the valves?
Customer reply replied 1 year ago
I tore down the motor. After seeing the piston and placing it at the top I still could not get the .008 gauge between the two. However the two valves do not turn when closed like in the youtube video. They appear to be flush on top and only are able to be turned when up. I would assume that the valves still need to be removed and ground down?
Technician: Curtis B., Technician replied 1 year ago

Yes, until you can get the proper clearance, Do NOT take but a slight amount at a time, and while valves are out, reseat the valves in the block.

Ask Your Own Small Engine Question
Customer reply replied 1 year ago
I have been doing research and I do not have the capacity to grind them down with the accuracy and fine finish that I have found it will require to work properly. I would need a machine shop to do the job right from what I have been reading. I noticed that when asked you did not have any instruction as to how to grind them down only that they needed it. This forum would appear to be geared toward the novice which in my opinion is really not equipped for that sort of modification. It is my feeling that my $18 would have been better spent if you had simply outlined the whole of the process, giving me the opportunity to see the pitfall and just take it to a shop before taring it down to asses a problem I was ill suited to fix. That being said I have found your patients to be good albeit fruitless. I am either going to take it to a shop in pieces and see if they would like to finish it with their compliment of tools or pass it off for parts or repair in a auction or something. This is the end of the project for me. next time I will just spend more and take the rest of the day off. I would have gladly paid $18 for someone to tell me not to attempt this and saved me half a day, which I think would have been well worth it.
Technician: Curtis B., Technician replied 1 year ago

I sent the service manual. That is all the help that you should need to get the basic points. You can grind the valve tips with a sharping stone or a good file, they don't have to be perfect.

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

I work out in the country and always try t figure out how to do it , without having to go to town! Like i'm stuck in the desert and have to get home! Good luck with it! Thanks,

Ask Your Own Small Engine Question
Technician: Curtis B., Technician replied 1 year ago

Please accept to close!

Ask Your Own Small Engine Question
Ask Curtis B. Your Own Question
Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,471
29,471 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

29,471 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

2,858 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

1,607 satisfied customers

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

< Previous | Next >

Related Small Engine Questions
I have a newer troybuilt snowblower that appears to have gas
I have a newer troybuilt snowblower that appears to have gas in the oil, what would cause this and is there any hope? … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,508 satisfied customers
I have 3.6kyfa26120l and was determined the regulator needs
I have 3.6kyfa26120l and was determined the regulator needs replaced part with (###) ###-####which is obsolete at Cummings/Onan none to be found. Couldn't i find an adjustable regulator plumb it aroun… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
Can you repair the generac starter Generac starter 20692. 30
can you repair the generac starter Generac starter 20692 … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
I replace Excelerator governor after rat chewed wire up now
I replace Excelerator governor after rat chewed wire up now won't start … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
I hope you had a Merry Christmas and a Happy New Year!!
Hey Curtis, this is Rich. I hope you had a Merry Christmas and a Happy New Year!! We've been thinking about you and the warm weather that you are having! I woke up and went to work in -4 weather, plus… read more
Curtis B.
Curtis B.
Technician
29,471 satisfied customers
Have a model 4bgefa26101j onan rv generator. The starter
Have a model 4bgefa26101j onan rv generator. The starter button stuck and burned up the starter and solenoid so I replaced them along with the main board. Now it runs when I press the starter button b… read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
Engine 375 gap to flywheel. 10years ihad removed the coil
10years ihad removed the coil for cleaning and did not take a measurement of the gap … read more
Donald
Donald
Owner / Technician
High School
2,231 satisfied customers
I have a Troy bilt 4 cycle mini tiller. Where can I get an
I have a Troy bilt 4 cycle mini tiller. Where can I get an owner's manual on how to maintain it? … read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
My fuel pump is not letting fuel come out when turning
my fuel pump is not letting fuel come out when turning engine over. I can suck gas through to the fuel pump but will not come through the pump … read more
Curtis B.
Curtis B.
Technician
29,471 satisfied customers
11rmy-qs3. Hit starter just a click. Batt. up. Is there a
11rmy-qs3. Hit starter just a click. Batt. up. Is there a starter relay? … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
I have a Tecumseh HSK70 on my Ariens snowblower. Engine is
I have a Tecumseh HSK70 on my Ariens snowblower. Engine is about 25 years old and I was not getting spark so I installed a new spark plug, carburetor and coil. Gapped the coil at .012. Still no spark.… read more
Wayne
Wayne
Engine Rebuilder
Vocational, Technical or Trade Scho
1,607 satisfied customers
I have a generac generator and I accidentally added
hi I have a generac generator and I accidentally added 4cylinder small engine oil (briggs and stratton) … read more
Hank F.
Hank F.
Service Technician
High School or GED
5,363 satisfied customers
How do I replace the track on my Cub Cadet 3x30 420 cc snow
How do I replace the track on my Cub Cadet 3x30 420 cc snow blower … read more
Curtis B.
Curtis B.
Technician
29,471 satisfied customers
I have a lt1000 craftsman tractor with a 17hp kohler motor
I have a lt1000 craftsman tractor with a 17hp kohler motor that I replaced the fuel filter on and now it is low on power, starts fine and runs, but when I put it in gear and engage the mower or snow b… read more
Curtis B.
Curtis B.
Technician
29,471 satisfied customers
Someone asked the same question I'm asking but I did not see
Hi Pearl. Someone asked the same question I'm asking but I did not see an answer. I've got to fix my snowblower because the auger gear case is busted. Where can I get a repair manual for a Troy-Bilt s… read more
Vince O.
Vince O.
Small Engine Technician
High School or GED
2,858 satisfied customers
Having trouble working garage door opener. Never. I just
I just purched a universal garge door opener and cant seem to program it … read more
Eddie
Eddie
Home Improvement Contractor and Repairs
High School or GED
1,050 satisfied customers
Can you please post a updated link to the beaver blade used
Can you please post a updated link to the beaver blade used with the Craftsman high wheel string trimmer? The old link does not work.… read more
Briggs-Fan
Briggs-Fan
1,266 satisfied customers
I have a generator with a 10 hp Subaru/ Robin engine. The
I have a generator with a 10 hp Subaru/ Robin engine. The pull cord keeps breaking . I am using a 3/16 braided cord 22 Lb . Is this the right cord or do I have another problem … read more
JON
JON
Master Service Tech
MASTER SERVICE TECHNICIAN
1,508 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