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I have cub cadet with kohler sv590, it cranks but I am

Customer Question
unable to start it JA: Do...
I have cub cadet with kohler sv590, it cranks but I am unable to start it
JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?
Customer: yes full and there is no shut-off
JA: Do you plan on doing the work yourself?
Customer: yes i have been working on this thing last 4 days and best I got was flames out of the carb
JA: Anything else we should know to help you best?
Customer: as i crank and open the throttle the more I open harder it cranks
Submitted: 1 year ago.Category: Small Engine
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Answered in 18 minutes by:
10/2/2016
Technician: Curtis B., Technician replied 1 year ago
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,132
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert
Verified

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

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Technician: Curtis B., Technician replied 1 year ago

When did it last run? You have good spark with plug removed and grounded while cranking? Do you have good compression? Check by holding finger with rag over the spark plug hole while cranking. If it has spark and compression, put a teaspoon of fuel into the spark plug hole, and re-install the spark plug to see if it will start for a few seconds.

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Technician: Curtis B., Technician replied 1 year ago
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Technician: Curtis B., Technician replied 1 year ago

Service manual link above!

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Customer reply replied 1 year ago
I am very sorry but I had to leave the house. I will get back to you in about an hour or so.
Technician: Curtis B., Technician replied 1 year ago

OK>

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Customer reply replied 1 year ago
Hi there I am back with the same question.
I have cub cadet with kohler sv590, it cranks but I am unable to start it
It was used about a month ago. As of right now it has spark and fuel with very strong compression.
Customer reply replied 1 year ago
Text is fine.
Customer reply replied 1 year ago
Anybody there
Technician: Curtis B., Technician replied 1 year ago

When did it last run? It has compression , but all the valves moving if you remove the rocker cover and check?

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Customer reply replied 1 year ago
About a month ago, has nice spark and strong compresion
Technician: Curtis B., Technician replied 1 year ago

Valves may not be opening.

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Customer reply replied 1 year ago
adjusted the valves to specs
Customer reply replied 1 year ago
I took the top cover off and found governor gear broken, I replaced it with new one but no luck
Technician: Curtis B., Technician replied 1 year ago

Did you move the crankshaft or camshaft that would have displaced the internal timing?

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Customer reply replied 1 year ago
Did not, took it apart to check ARC mechanism but put it back together by the spec.
when cranking the engine on fully open throttle it cranks really hard and slow
Technician: Curtis B., Technician replied 1 year ago

If not, I would check the crankshaft to flywheel key.

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Technician: Curtis B., Technician replied 1 year ago

Does it crank easily with spark plug removed?

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Customer reply replied 1 year ago
Did that as well took flywhell off and replaced the key
Customer reply replied 1 year ago
it dose crank easily with spark plug removed
Technician: Curtis B., Technician replied 1 year ago

Then it is out of time.

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Customer reply replied 1 year ago
But I did adjust the timing by specs. Took cover of and alined the cam gears with marks on the shaft
Technician: Curtis B., Technician replied 1 year ago

Has to be either the internal timing or the flywheel key.

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Customer reply replied 1 year ago
how do I check Internal timing
Technician: Curtis B., Technician replied 1 year ago

Only way is to go back into the engine and recheck!

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Technician: Curtis B., Technician replied 1 year ago

I assume the battery voltage is good and the cables and starter are good!

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Customer reply replied 1 year ago
its all good
I rechecked the internal timing like 3 times. I even took ARC off and still nothing
Customer reply replied 1 year ago
I mean there is no magic to it but I guess I must be missing something
Customer reply replied 1 year ago
I have not yet tried to put the fuel in to cylinder but I used starting fluid instead
Technician: Curtis B., Technician replied 1 year ago

If it were hard to turn with spark plug out, the pulley on the lower crankshaft could be binding the crankshaft, but you say it turns ok. Starting fluid should have at least let it try to run.

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Customer reply replied 1 year ago
It spited flames true the carb
Customer reply replied 1 year ago
right out
Technician: Curtis B., Technician replied 1 year ago

That tells me you have a valve open when the spark occurs, which has to be valves or timing.

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Customer reply replied 1 year ago
I agree
Customer reply replied 1 year ago
the pulley on the lower crankshaft how do i check on that
Technician: Curtis B., Technician replied 1 year ago

Just loosen the pulley.

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Customer reply replied 1 year ago
I am not sure. You mean the pulley under the mower
Technician: Curtis B., Technician replied 1 year ago

Yes.

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Customer reply replied 1 year ago
I am working on it right now. Will be like 5 min
Technician: Curtis B., Technician replied 1 year ago

OK>

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Customer reply replied 1 year ago
Ok took pto and drive belt off and it cranks a lot easier . Sprayed some starter fund to the cylinder cranked it and she suited flames right out of carb.
Technician: Curtis B., Technician replied 1 year ago

OK, so it still has issues with timing. To loosen the lower pulley you need to add shim between pulley and crankshaft, to give it more clearance.

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Customer reply replied 1 year ago
The lower pull your sits on the shafts free of any obstruction and spins as shafts do
Customer reply replied 1 year ago
What is the point of removing the pully
Technician: Curtis B., Technician replied 1 year ago

If you have no clearance on the pulleys, they take away all the crankshaft thrust and make shaft hard to turn. If you have crankshaft thrust, it is not a problem.

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Customer reply replied 1 year ago
Ok I am working on it. It's kind of tight
Customer reply replied 1 year ago
Got pulley loose away from engine but is still on the shaft
Technician: Curtis B., Technician replied 1 year ago

You are going to need it off to go back into the engine.???

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Customer reply replied 1 year ago
Ok this will take a while
Technician: Curtis B., Technician replied 1 year ago

yes, I don't expect to finish this today!

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Curtis B.
Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 29,132
29,132 Satisfied Customers
Experience: have worked on and around most engine models for 35 yrs./Polaris ATV expert

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