replacing cam also valve springs?

   / replacing cam also valve springs? #1  

weeder

Silver Member
Joined
May 12, 2015
Messages
225
Location
Tuscola Illinois
Tractor
John Deere 425 lawn tractor
I saw where when you are replacing the plastic gear cam on a 425 that you need to go to a different valve spring? Is this the case? What are they heavier and can take more force due to a steel gear?

Your thoughts on this

Thanks weeder
 
   / replacing cam also valve springs? #2  
Making a new thread here?
 
   / replacing cam also valve springs?
  • Thread Starter
#3  
Well I didn't know if to put it on the other thread or start a new one? Sorry if I messed up? I can delete it.
 
   / replacing cam also valve springs? #4  
As long as you're in there and doing the work, yes ---- springs, tappets and push rods. Not a lot of $ ---------
 
   / replacing cam also valve springs?
  • Thread Starter
#5  
What kind of tool do you guys use in holding the small square bolt on the rocker arms when adjusting the valves? It would take a very small crescent wrench or a pair of needle nose pliers just your thoughts?
Thanks weeder
 
   / replacing cam also valve springs? #6  
What kind of tool do you guys use in holding the small square bolt on the rocker arms when adjusting the valves? It would take a very small crescent wrench or a pair of needle nose pliers just your thoughts?
Thanks weeder

Sears used to sell "Tappet Wrenches" singular or in a set. You may check and see if they still offer them. Tappet wrenches look like regular wrenches but are very thin. Craftsman.com. Got a grinder and a old wrench in the size needed, grind the sides off.
 
   / replacing cam also valve springs? #7  
Been a while since I did it but I think I just used a metric wrench. Don't recall needed to do or use anything special. Pretty straight forward: Loosen nut. Adjust gap. Tighten nut. Recheck gap.
 

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