2019 850 Patriot top end rebuild torque specs

[HECKS]

If anyone is kind enough to share cylinder/head bolt torque specs for a 2019 850 Patriot. Can't seem to find any specs online, or a PDF manual.
Rebuilding topend for a buddy, and I only have 16-18 Service manual for the 800's.
Thanks in advance.

 

[TDR]

40 ft/lbs for the cylinders and 23 ft/lbs for the head.

 

[HECKS]

40 ft/lbs for the cylinders and 23 ft/lbs for the head.

Can I trust you..........lol.
You the man, Thanks TDR !
I imagine the torque sequence would be the same as the axys engine for the cylinders and head ?
Parts fiche for the 850 only shows 6 bolts for the mono block.

 

[theshadowrider]

Curious what happened?

Also does anyone know where to get a manual? I have 2000 miles and thinking of doing a topend?

 

[HECKS]

Curious what happened?

Also does anyone know where to get a manual? I have 2000 miles and thinking of doing a topend?

Just preventative. Leakdown test shows 7% on PTO side, MAG side was good at 3%.
Service manual is hard to come by for free, I've typically found them online for other models/years. But not the 850's, looks like $ 20.00 you can download a copy online.

 

[theshadowrider]

Just preventative. Leakdown test shows 7% on PTO side, MAG side was good at 3%.
Service manual is hard to come by for free, I've typically found them online for other models/years. But not the 850's, looks like $ 20.00 you can download a copy online.

Never done a leakdown before. Whats the procedures?

 

[HECKS]

Put pressure to the cylinder at TDC and measure the pressure loss % to determine acceptable ring leakage.

 

[theshadowrider]

Is there a trick to keep it TDC? Done this on aircraft but not a 2 stroke? Most I could get is 60psi without it kicking out of TDC. 56/60PSI both sides cold. Thinking I do a topend this summer?

 

[BeartoothBaron]

I've used a wrench on the clutch bolt to keep the motor from spinning - works just fine. I've also seen guys come up with contraptions made with a hollowed out spark plug and all-thread to hold the other piston down. I've heard anything from 4% (96 PSI) to 8% (92) as the "do it" point. It's hard to put a fine point on it though, because gauges tend to be off a bit from each other, and some engines don't seem to seal as tight, but run fine. Ideally, you'd get a baseline number when your motor is fairly fresh, but broken-in, then start thinking of doing it once it's 2% or so below that.

 

[HECKS]

I mark the clutch at TDC of each cylinder, and just use a pry bar to hold the clutch at TDC. A freshly broken in engine will typically have 1-2%.
I use Indy Specialties recommendations: