Hard to start

[ILENGINE]

the compression release lives on the cam gear. There are two cams depending on when the engine was built. One is NLA and the other $123. The other alternative is to buy a new motor for it. The cam is not all that hard to replace, pull the engine and then the sump. Put everything back together. It is like 8 or 9 bolts. Then adjust the valves when done. If it is laying on its side, the lifters won't even fall out. If they do, keep track of where they came from. Might have to replace the sump crankshaft seal too if the rust on the crankshaft damages it. Hardest part is scraping off the old gasket and cleaning the sump cover. Date code is on the engine. It reads YYMMDD-factoryID The serial numbers are not numeric when ordering parts. An engine that starts with say 11 was made in 2011. An engine starting with 99 was built in 1999. The 11 number is newer than than the 99 even though a serial reading 990612XX might seem newer than one reading 111203XX.

Parts Lookup

shop.briggsandstratton.com

both camshafts are available per Power Distributors website

 

[mdland]

Your engine takes the 793880 supercedes to 84005207 camshaft for all date codes.

That's the part number of the two I've already installed, with no fix to the issue. Even had a friend that has worked on these engines more recent than I, stop by and check the engine before the las cam I put in and he said I had everything right, but it still wouldn't pass TDC compression. He also confirmed my discovery of the release occuring too soon.

 

[StarTech]

If the decomp is happening too soon then delay camshaft to crankshaft timing by one tooth and see if that fixes the problem.

 

[mdland]

If the decomp is happening too soon then delay camshaft to crankshaft timing by one tooth and see if that fixes the problem.

And I suppose leave it and run it like that?

 

[sgkent]

Go back over your work, or get someone to help you who has the experience. If the parts you are putting back together aren't working right time after time, there is a chance they aren't being put together properly. Everyone makes mistakes. I do it all the time, it gets worse as one ages. In fact, tomorrow I have to reassemble a set of mcpherson struts that I put the cupped washers in the wrong order.