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Old 12-01-2013, 01:25 PM
puhlmyfngr puhlmyfngr is offline
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Lazer z starting problem-cranks but doesn't start

Can anybody offer any help?
I have a lazer z with a 25 hp kohler that's cranking over but just doesn't want to start. It ran fine when I parked it and has sat for about 2 weeks without being started.
I checked and both plugs are getting spark. I pulled the gas line off the fuel pump and it pulses gas when cranking.
I even gave it a shot of either and it just gave me a loud bang, like a backfire.
I've killed the battery and put a jumper pack on and all I seem to be doing is overheating the starter.
Any suggestions would be greatly appreciated as I have to get the mower moved and into storage for the winter.
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Old 12-01-2013, 01:42 PM
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C & T Landscaping C & T Landscaping is online now
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Shot in the dark, but when was the last time you adjusted the valves?
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Old 12-01-2013, 01:48 PM
puhlmyfngr puhlmyfngr is offline
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Thanks for the quick reply!!
I've never touched 'em.
Is there an easy way to get this thing to at least roll so I can move it?
I see something in one of my manuals that refers to a "Drive wheel release". I'm guessing that's what I should be looking for on the hydros. I answered my own question there, lust need to turn 5/8 nut counter clockwise to release the drive system.
Now back to my starting problem.

Last edited by puhlmyfngr; 12-01-2013 at 01:57 PM.
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Old 12-01-2013, 04:47 PM
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Restrorob Restrorob is offline
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A Kohler 25 has lifters therefore non adjustable, Try a NEW set of plugs to "start" with......
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Old 12-01-2013, 04:51 PM
balms balms is online now
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Shouldn't have to mess with the valve adjustment, if it's a Command Pro it should have hydraulic lifters so no adjustment is necessary.
Are you sure that you are getting gas into the float bowl so it can be drawn into the cylinders? Inlet float valve could be stuck closed.
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Old 12-01-2013, 05:13 PM
puhlmyfngr puhlmyfngr is offline
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Thanks for the pointers!!
I'll start with the plugs and see if that helps.
Then move on to the carb and report back tomorrow.
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Old 12-01-2013, 07:26 PM
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Restrorob Restrorob is offline
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While your checking..... Make sure the fuel cut-off solenoid on the carb is get'n power and clicks when the key is turned on and off......
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You never learn anything until you admit you don't know it all...

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Old 12-01-2013, 04:46 PM
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sildoc sildoc is online now
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Fuel, Spark and Air and the thing should run. You must be overlooking something.
Did you get any momentum at all with ether? Maybe you flooded it? Is it the fuel so rich you can't get it to fire, this happens sometimes in cold weather where the float is stuck open by ice. Just thoughts to provoke others.
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Old 12-01-2013, 09:32 PM
Max447 Max447 is offline
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Did any critters block up the exhaust while it was sitting?
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  #10  
Old 12-02-2013, 04:58 PM
puhlmyfngr puhlmyfngr is offline
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Problem solved! It was the fuel shut off solenoid. Mine was mounted horizontally on carb. It wasn't clicking w/key on so I guess the stars were aligned just right last night, 'cause I tapped on it then viola, the little bugger started to work. Then she fired right up.
Thanks for all the help, hopefully I can return the favor in the future.
Now lets get the plows ready.

(If it's got boobs or a key, it's eventually gonna give you trouble!)
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