Poulan Pro BVM200LE

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  #1  
Old 11-26-08, 10:18 AM
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Poulan Pro BVM200LE

Have a blower that won't start, has spark and new gas. It may have 50 hours but may not. Throttle lever seems kind of loose but still operates. Tried new plug to no avail. Thinking about removing muffler as seen on previous posts concerning blower starting problems. Tried starting fluid but won't fire.
What's my next step?
Took muffler off and it looks good. No blockages.
 

Last edited by Broken Nuckles; 11-26-08 at 10:26 AM. Reason: Did a little exploring.
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  #2  
Old 11-26-08, 06:13 PM
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Did you check for ignition spark?

What do the cylinder and piston look like??

Does it have good compression???
 
  #3  
Old 11-26-08, 07:12 PM
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Bvm200le

It has a spark, when plug pulled out and the cord is pulled I see spark. I pulled the muffler and the piston still seem shiny and chromed. I don't have a way of checking accurately compression. I guess an auto parts place would have one of these?
 
  #4  
Old 11-26-08, 10:46 PM
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Check to make sure the cylinder bolts are tight.
 
  #5  
Old 11-27-08, 05:42 AM
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Bvm200le

I will try the cylinder head bolts next, it looks like they are allen head. Hope tee handle allen wrench will work. If not may have to wait to get a socket type. Happy Thanksgiving to all!!
 
  #6  
Old 11-28-08, 06:28 PM
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Bvm200le

How tight do the cylinder head bolts have to be? Can the be tightened enough with a basic allen wrench? How about a tee handled allen wrench? I checked and they are not that loose.Still no fire. How bright a spark do you need?
 
  #7  
Old 11-29-08, 12:39 AM
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Sounds like the bolts are plenty tight enough then. Look for a crisp blue spark at the plug. It doesn't have to be really bright, just has to have one. Is the spark plug wet?
 
  #8  
Old 11-30-08, 02:12 PM
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Bvm200le

Hey guys I took it apart once again to make sure everythings is tight and it is. I even swapped carbs from another unit, one that was working. Anyway it has spark and new gas and I smell gas when trying to get it started. Nothing I do seems to get a burp from it. Like I said piston looks good and shiny, has spark, cylinder head tight. I've poured gas into the carb and still nothing, I'll guess I'll get a compression gauge and check that. It is too new to need rings.
 
  #9  
Old 11-30-08, 07:53 PM
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check the flywheel for a possible sheared flywheel key way. If the engine is way out of time it will not start.
 
  #10  
Old 11-30-08, 08:30 PM
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I'm wondering if the thing is flooded with fuel. Especially since you mentioned smelling gas when trying to start it.
 
  #11  
Old 12-02-08, 08:07 PM
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Bvm200le

Guys I think upon further inspection and looking at another of the same model and swapping carburators I find that this one doesn't feel quite the same when you pull the cord to start. It feels a little too easy on the one that won't start. I think it needs rings. How easy is this and do I need special tools?
 
  #12  
Old 12-02-08, 09:19 PM
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It's generally not worth it. If the cylinder, piston, and rest of the unit is in good shape, and you just have to try it, then get a ring and gaskets and take it apart. You just have to take the cylinder off (those allen head bolts you checked). Put the new ring on, align the gap with the alignment pin, replace the gasket, compress the ring (I've used a hose clamp tightened just enough to compress the ring, but loose enough to move when you slide the piston in), and put it back together.
 
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