Mechanical Compression Release

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  #1  
Old 05-04-05, 09:14 AM
Ham
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Mechanical Compression Release

I'm gonna ask a stupid question. If the MCR on a Tecumseh OHV 13 hp engine breaks will the valves still move? I have not been inside one of these to know exactly how they work.
 
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  #2  
Old 05-04-05, 05:48 PM
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I didn't know modern engines had mechanical compression releases.
Have'nt seen one since my old Whizzer motorbike. That gives away my age.
I would think that, if the internal portion did not jam something up, the motor would still run.
 
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Old 05-04-05, 11:44 PM
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Hello Ham!

Yes, if the compression release breaks, the valves will still move. Are your valves not moving?
 
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Old 05-05-05, 06:19 AM
Ham
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Yes, they are moving. The engine seems to drag when trying to start, but when I take the plug out it will spin like it should. I was wondering if the MCR would cause it to do this?
 
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Old 05-05-05, 02:12 PM
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It can, but I would start by adjusting the valves. If the valve clearances are too loose, the comp release won't be able to work.
 
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