OS FS 70 Surpass A Cutomer Rebuild Part 1

A fellow modeler has sent his OS FS70 Surpass engine to me for repair and rebuild.
Please check out my Blog pages
www.rcgroups.com/forums/member...
www.dmrcflyr2.com/#!blog/k40vr

[@harveynewman4333]

I just replaced the valve springs on a 70 surpass for a hobby shop customer here in sebring.

[@chuckharkness4695]

I bought a new stick with this engine and I was wondering what the nipple underneath by the prop is? This has a tube connected to it like it might be an overflow.

[@dmrcflyr2]

It is a vent line for excess oil to be expelled from the engine. All 4 strokes have them.

[@jefflarner]

Hi David,I just picked up one of these engines from ebay. I'd like to install a choke mechanism. Can you give me a good source for OS parts?

[@TheZpilot55]

Hi
Please what tool is that to remove valve springs? Thanks

[@dmrcflyr2]

It is a box end wrench. A very common tool

[@danielpadgett2831]

Looks like whoever messed with engine needs to leave it alone

[@dmrcflyr2]

Agreed