picked this up last week. It was posted here for sale but I found on CL. Hadn't been started since 88. I have it running now but still not quite right and I'm kind of stumped what to look at next. It's a 2 HP model, has a 1/12/340 bing carb, and the correct 54 jet per the manual. Everything is original that I can tell. Currently, it is tough to start, stalls if I try to slow it down to the point where the wheel nearly stops. I can't get it much more than 20 and feels like somewhat weak. It seems to be blowing a lot of white smoke. I did notice that removing the air cleaner tube and filter seems to make it run better. Let me know what I should look at next because this has me stumped. Thanks in advance!
Here is what I have done:
replaced plug, WC7 equivalent NC4 champion set to 16-18 range.
Cleaned fuel tank, replaced fuel line.
rebuilt carb including new float (float is parallel to the body when closed), needle ok and not leaking All passages are clear
Tested that gas is reaching carb and entering the bowl when the float drops
cleaned exhaust,cleaned intake and metal air filter.
cleaned grounding connections.
replaced tranny fluid to filler with type F
Tested for and fixed air leak at manifold to carb with O ring. Spray doesn't indicate any leaks downstream of the carb.
Checked the timing. Found/marked exact TDC with a dial indicator, using cigarette paper, found the points opening within the manual stated range of 14-17 deg, based on the flyweel being 360 mm. Points were cleaned and are set at about 16 degrees.(edited)