Kawasaki 23 HP no power under load

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  #1  
Old 06-17-06, 01:48 PM
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Kawasaki 23 HP no power under load

This Yazoo/kees 61" mower looses power when subjected to a load, like cutting grass or travelling fast. I'm having a hell of a time gettting even filters or a muffler because the dealers, including the one who sold it 5 years ago, and Kawaski can't find any parts numbers. It doesn't show up on their catalogs or website. It's model FH680D AS06, serial # FH680D A00484. Any help there would be appreciated.
Back to my problem today, no power under load. Do I start with new plugs and wires, or go to the carb for a cleaning or rebuild? Any suggestions for simple fixes first? Thanks.
tom
 
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  #2  
Old 06-17-06, 02:36 PM
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Bob

That's quite a little animal you have there to work on.

I would start with the easiest and cheapest; air filter - if plugged would cause that, new plugs - probably isn't the problem but after 5 years wouldn't hurt, exhaust- check for plugging, plug wires- look for breaks and burns - probably isn't the problem, check your fuel filter and gas line for good flow from tank- a possibility. Make sure your throttle is working properly and your choke is moving from on to off position.

Now if something hasn't shown - a compression test - if it isn't burning oil you're probably ok. Then fuel pump check for output pressure by specs.

These last ones are where I would think you have the problem - ignition - either coil or timing with the transistorized system or the carburetor main jet/power circuit. The latter would involve dismantling for cleaning - best done with a bath cleaner.

This should get you started

Hope this helps
 
  #3  
Old 06-17-06, 08:20 PM
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Bob

Tom

Here is a link to your carburetor diagram from a K dealer.

http://www.buykawpower.com/kmcb2c/Me...historyDepth=2


It seems the AS06 model is missing frequently, but 05 and 07 models are there. I wouldn't be surprised if the parts on either the 05 or 07 will interchange with yours.

If you go to this link you'll see a shutoff solenoid for the fuel. This could be acting up, but I would think it would either be all off or all on and not causing your problem.

What will help you though is the accessible main jet through the jet plug. You can remove this plug and spray aerosol cleaner through the jet. Cleaning it may take care of your problem.

Hope this helps
 

Last edited by marbobj; 06-18-06 at 11:13 AM.
  #4  
Old 06-19-06, 05:53 AM
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it would be interesting to know what the engine is doing when it looses power. Is it sputtering with or without what color smoke?

Does it crack, pop and backfire when losing power.

is it missing?

Sometimes when motors run smoothly and just slwo down when poser is demanded, the govenor is not feeding the throttle needed. Sometimes it is just likage that is bindidng

 
  #5  
Old 06-19-06, 07:16 AM
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Kawasaki reply

Thanks all. Marbobj, AS05 and AS07 do look similar, I had looked at the site before, but there's got to be some difference, or why change the designation. Kawasaki is being stubborn, won't offer any help beyond, see a dealer. Who says, "I don't know". Hate to tear it apart not knowing if I can get the right parts.

I'll try pulling the jet plug as you said an spraying cleaner.

Henry J: doesn't spit or backfire, just bogs down, as if choked. all likage working, even seems governor linkage is free.

honestly feels like a fuel problem. thanks for comments guys.

tom
 
  #6  
Old 06-20-06, 01:21 AM
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Personally, I'd start with new plugs before I tore into anything judging by your description.
 
  #7  
Old 06-20-06, 07:00 PM
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Bob

Tom:

I imagine the designation difference is the progression in horsepower. It's odd that the one you have is the one missing everywhere. It may be that the 23 horsepower (06) was upgraded to the higher HP 07 shortly after the 06 came out.

What you can do is go to the website we've been looking at and compare the part numbers for the 05 and the 07. If those are the same the likelihood is the 06 would have the same ones.

But like Cheese said - don't tear apart any more than you have to. Sometimes the simple things get you fixed up.

Hope this helps, good luck
 
  #8  
Old 06-23-13, 02:23 PM
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no power under load no high speed

I recently encountered a similar problem got very frustrated there are two different types of carburetors the one I had was the rectangular style it is designed in a way that if your engine backfires it will blow out one or both soft plugs on top of Carb beside needle jets I overlooked this several times it made a fool it of me I went to local auto parts store that rebulids carburetors he fixed me up with new ones
 
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