10.5 hp intek wont run

[PTmowerMech]

Yea that makes sense. So i did put some starter fluid direct into spark hole, put plug in and pulled it. There was a kickback so violent that the handle was jerked out of my hand....and i let out a yell from the ensuing pain that could be heard a block away. What does this mean?

If it was just a kickback, that means you just got to the compression stroke and it was too much for you to handle. Did it fire at all?

One thing that means is that the piston is still connected to the crank.

 

[bertsmobile1]

As Scrubby said,
Yu have just found out that the timing key is busted .
The flywheel has rotated forward a bit so the coil sparked too early causing the engine to spin backwards .
Ask any motorcyclist over 50 or ones that ride bikes over 50 years old about kick backs .

 

[PTmowerMech]

Don't use more than a 1/2 second squirt of starter fluid. Carb cleaner is better for that sort of thing.

 

[jimigunne]

Ok.....i dont have a clue about flywheel and timing key, but guess i'll figure it out once i take starter and shroud off.

 

[Scrubcadet10]

 

[Rivets]

This manual might help. https://docs.google.com/open?id=0B6NaqjIxWV1ybEN0LWo3azl6OUU

 

[jimigunne]

Yea, thanks. Will get a B&S flywheel puller and then can fix it

 

[jimigunne]

The crankshaft key is good! Like new still. Flywheel position is exactly right.
So the other possibility is a valve problem?

 

[jimigunne]

Got crankshaft nut off no problem. The key appears like new, undamaged. See attached pics. What are other possible causes of kickback? Guess i should check valves next?

 

[Rivets]

Stupid question, is it possible that the coil is mounted upside down? Most Briggs engines have the kill wire termial on the bottom. You did state you replaced the coil. May be wrong, it happened once before I think.