Primers? Why?

JAG · #1 10-05-20, 08:58 AM

Hi Mark,
The primers are related to cold weather starting procedures. It may be in your owners manual (POH) - it is in mine. But yes, practically it is also an alternative to a fuel pump if you are in a bind.

Jeff

cessnadriver · #2 10-05-20, 06:35 PM

FYI. I asked the same question REF: manual primers. If you were to use the manual primers because the electric fuel pump was inop. you would be ILLEGALLY flying. Because if you did take-off and had an mechanical fuel pump go out then there is a complicated procedure to cross-feed the inop. engine fuel pump. See the other Skymaster web site www.skymasterus.com for detailed explanation.
Thanks, BILLS

mshac · #3 10-05-20, 07:59 PM

Later model 337's have a simplified fuel system. There are no "AUX" tanks, only a single main in each wing. No reason to ever have to touch the fuel selectors unless you're wanting to cross-feed for some reason. Nothing at all "complicated" about it.

rhurt · #4 10-26-20, 07:37 PM

So you can hand prop the plane with a dead battery. A friend of mine has hand propped them several times but there was always enough battery power to run a fuel pump.

mshac · #5 10-26-20, 07:41 PM

Quote:

Originally Posted by rhurt

So you can hand prop the plane with a dead battery. A friend of mine has hand propped them several times but there was always enough battery power to run a fuel pump.

True enough, but I've never been a fan of hand-propping anything much larger than a Cub...

rhurt · #6 10-26-20, 08:33 PM

Agree. I would rather remove the primers from my airplane

JimC · #7 10-27-20, 01:25 PM

"If you were to use the manual primers because the electric fuel pump was inop. you would be ILLEGALLY flying"

Devil's advocate - why is this illegal?

I'm not saying it's a good idea, but I don't think it's illegal. 337s don't have MELs.