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AC 620 front timing marks? | 
 
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   Tracy Martin TN  
   
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   Joined: 11 Sep 2009 Location: Gallatin,TN Points: 10837  | 
  
   
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     Topic: AC 620  front timing marks?Posted: 20 May 2017 at 6:34pm  | 
 
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I have a 616 that has a 620 engine in it. On the front of engine, there is a indicator that has a mark to set to mark on front clutch. The Simplicity manual shows these on the 4041 .It doesn't clarify where to align the marks up at timing. I know it should be 20 degrees before TDC using rear engine marks. I don' want to use them because of all the stuff you have to remove. Any help appreciated. Thanks tracy
    
   
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     No greater gift than healthy grandkids! 
     
   
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   HudCo  
   
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   Joined: 29 Jan 2013 Location: Plymouth Utah Points: 3949  | 
  
   
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     Posted: 22 May 2017 at 9:13pm | 
 
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   dont you time that there the timing hole on the blower houseing
    
   
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   coggonobrien  
   
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   Joined: 14 Nov 2010 Location: Eastern Iowa Points: 1864  | 
  
   
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     Posted: 23 May 2017 at 8:24am | 
 
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   Tracy, I just timed mine by ear.  starts right now and seems to be fuel efficient.
    
   
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   Tracy Martin TN  
   
   Orange Level Access  
   Joined: 11 Sep 2009 Location: Gallatin,TN Points: 10837  | 
  
   
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     Posted: 23 May 2017 at 8:41am | 
 
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   There is a set of marks on the front of the 19.5 Onan. I got the info to align the marks from the Simplicity guys on facebook. Mine seems to have valve chatter in a hard pull uphill. Not sure if it is timing or valves need adjusting.  Tracy 
   
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     No greater gift than healthy grandkids! 
     
   
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