Torque Spec's For Blade Bolts ?

P

polarisgold

Member
I have an old Dynamark 12hp B&S engine. All numbers from frame are gone so I can't get any info on the deck.

I want to torque the bolts proper. The last bolts from the spindals broke off.

Didn't think I was that strong....

To what specifications should these bolts be torqued??
 
The Intek 48 " deck blades (3) are 45-55 ft lbs per manual. Don't think they are grade 8 , probably grade 6.

Did you find a welder? A few Aluminum guys in Idaho craigslist but mostly around the cities, looks like.
 
motoman said:
The Intek 48 " deck blades (3) are 45-55 ft lbs per manual. Don't think they are grade 8 , probably grade 6.

Did you find a welder? A few Aluminum guys in Idaho craigslist but mostly around the cities, looks like.
Click to expand...

Grade 6????????? Who sells a grade 6?
 
Grade 6????????? Who sells a grade 6?

Any hardware store or auto parts store. One of the easiest grades to find. It will be harder to find grade 8. As I said I was just guessing what bolt was holding the blades on and I get most of my torque specs from a chart which is by grade and size.
 
Down south all you see is grade 8, grade 5 and grade 2, but mostly 5 and 8.

And not to hijack a thread, but you are talking hex head capscrews right, not bolts?
 
Hey Hitman, I know the South is NASCAR country . Maybe grade 8 is common because everything is for race cars :smile: Seriously if the bolt is not 8, aren't you afraid of snapping it? I'm glad I don't have to apply 80 ft lbs upside down on the ground to my blade fasteners . They are 5/8" Regards Motoman
 
motoman said:
The Intek 48 " deck blades (3) are 45-55 ft lbs per manual. Don't think they are grade 8 , probably grade 6.

Did you find a welder? A few Aluminum guys in Idaho craigslist but mostly around the cities, looks like.
Click to expand...

Don't need a welder....yet. The straight pipe with muffler is still hanging on.

Problem now is belt seems to be too loose. I just got through replacing both spindals and now they barely rotate. There seems to be only one way to run the deck belt. Can't find any info on my specific deck due to the chassie label missing. I have found two different manuals with pictures of their decks and they are so similar to mine I don't see how I could have installed the belt wrong. But something is fried! It cuts fairly well for 10 feet and peters out.

I'm stumped.
 
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