Beginner ? DA 100 . Proper position of Prop

[vernonf]

I am new to this Giant stuff. I need to know what position th prop needs to be mounted on the DA 100 for flip starting made easy. I was able to start it. I have it mounted at about 2 o'clock to 8o'clock position with the pickup magnet at about 1 o'clock just before compression. After the engine warmed up, I could only get it to cough when chocked and the it started and died. I will check battery voltage tomorrow. Just want to make sure the prop is index correctly. thanks in advance.

[JeeUm]

Just make sure your magnet is on compression before the hall sensor. Sounds like you got it right though.

I'm fighting with a motor also right now. After it pops with the choke and you shut the choke off, it normally takes about 3-5 more flips to get it running.

Make sure your needles are set correctly also.

[Toro]

after it coughs, you shouldnt need to choke it anymore. It is primed and ready to run. Try bringing your throttle trim up a few clicks, and go from there. Dont re-choke after it coughs and fires or you will be flipping all day long as the carb continues to pump raw fuel into the cyl with each flip. The only time you might need to re-choke is if it wont fire on its 4-5th flip after sitting for an hour or so

[vernonf]

Well , I found out today why the engine is hard to start. I have zero compression on the rear most cylinder. It has a melted 3/8in hole in it after the first 15 minutes on the test bench. I am feeling sick.
I ran the proper breakin oil mix and recommended prop. I warmed the engine up a couple minutes and mid range for 1 minute cool down 1 minute then ran it up to Tached 6100 to 6200 rpm for breakin. It started slowing down , so I thought it was overheating, then when it went to idle, it blew out a white puff of smoke out the left exhaust. I pulled the plugs , the right plug looked great, brown and a little fuel/oil residue, but the left plug showed signs of being Lean, clean . I put the fat finger over the plug hole , no compression. The right side great compression. I pulled the exhaust off and the right piston shows oil / fuel residue on the piston and sleeve. The left piston is dry as a bone. The carb setting were verified . Low was 1 3/8 and High was 1 1/2.
I am shipping it to DA tomorrow.

What could cause the rear cylinder only to run Lean enough to melt the piston?

[vernonf]

End of thread. thanks vern