Torque specs

   / Torque specs #1  

tarheel96

Member
Joined
Apr 18, 2017
Messages
36
Location
Tn
Tractor
Yanmar
Does anyone know the torque specs for a ym1700 valve cover nuts that hold the valve cover down? I bought a shop manual and cant seem to find that one piece of info. I have all the other specs for the head bolts and everything else to put the motor back together. This is a link to hoye site showing a pic of what I am talking about. VALVE COVER NUT (EACH): Yanmar Tractor Parts
 
   / Torque specs #2  
I would be very surprised if that was listed. Nothing critical there, just snug them down.
 
   / Torque specs #4  
When I got my 2000 home,The same V-cover. I was going through it checking everything. I went to check my Valves and when I removed the cover there was no V-cover gasket and with no visible leaks. No way am I going to smell burnt oil and Diesel if it does start to leak. So I ran a bead of Silicone and let it start to dry and then snugged up the bolts. No Gasket, Been that way for 9-1/2yrs. without a drop...
 
   / Torque specs #5  
The original valve cover gasket on YM240, and I assume YM1700, is rubber a little thicker than an innertube. It's intended to be reusable so don't gouge it getting the valve cover off!

I put a thin bead of silicone on the valve cover to force a tighter seal and stick the rubber to the valve cover. It never has leaked.

Similarly, I found a semi-permanent fiber gasket, like rope, embedded in a grove in the YM186's valve cover. Also don't gouge that one!
 
   / Torque specs
  • Thread Starter
#6  
Thanks for all the help guys. I have all new gaskets from Hoye waiting to install as soon as I get time. Just wanted to double check things before I went to installing everything. I figured it was cheap insurance to ask! Thanks again
 

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