Yardman wont start

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  #1  
Old 12-04-07, 12:55 PM
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Yardman wont start

Hi I have an 18 hp yardman lawn tractor that wont start. (I know its winter but I need to mow leaves before snow hits.) I have changed the spark plug, and battery with no luck.It barely cranks, 1-3 turns and it stops. Anyone have an idea? I really need to get these leaves mowed up quick.
Thanks for the help

orbit
 
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  #2  
Old 12-04-07, 07:13 PM
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Could be a lot of things, but there are a lot of different yardmans, and a lot of different 18 hp engines that could be on them. Narrowing it down for us would help us give you more detailed instructions. (engine make and model).
 
  #3  
Old 12-04-07, 08:29 PM
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I had the same problem on my 19 hp b&s, the valves were out of adjustment not allowing the motor to turn over but a few times then compression locking, I have to adjust them about twice a year.
 
  #4  
Old 12-05-07, 12:50 PM
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Thanks for the reply. The model # is PR1842STB for the lawn tractor. Engine is a Briggs and Stratton. It says INTEK PLUS 18.0 H.P. OHV. There is a engine sticker on the side that says: family YBSYS.5012VP 274826. There also is a model # on top of the exhaust that says model # 31H777 0202 type e1 code 020308ZA. That's all I saw. Thanks for any and all help.
ps snow fell last night,just my luck.

Thanks Again, Orbit
 
  #5  
Old 12-05-07, 07:00 PM
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Ok, you have the single cylinder OHV 18 horse instead of the flathead twin cyinder 18 hp I was thinking of.

In this case, j400 is putting you on the right track. I agree and suggest adjusting the valves. This should solve your problem.
 
  #6  
Old 12-11-07, 02:17 PM
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Hey thanks for the info. I don't know how to do this myself, so I'll be contacting someone for the repairs.
Thanks Again
Orbit
 
  #7  
Old 12-12-07, 02:12 AM
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You're on a DIY site so you must have, at least, some mechanical ability. Why don't you purchase a service manual for this engine and have a go at the valve adjustments? We can help!
 
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