Ok guys I hope y'all like a challenge. I have a 13 HP B&S in a 2000 model lawn machine. I just got it a month ago and have maybe run 5 tanks of gas through it. I have lots of mechanical experience but no small engine experience until recently. I noticed it was leaking oil from the seal around the crank shaft so I pulled the engine removed the oil pan replaced the seal and put it all back together. It started on the first turn of the key. After a few mins I noticed it was smoking out the top by the flywheel and I checked my oil dipstick and smoke came from their too. After a little research I realized I installed my oil slinger wrong so 2 days later I pulled the engine again, this time I cleaned the lawn mower while the engine was out and uses a tag to wipe off grease and oil from the motor itself. I checked my timing and oil slinger this time, no more mistakes. I put it all back together and now it won't start. I have 13v at the battery, I replaced the starter solenoid, replaced my fuse, replace the spark plug. But for some reason the starter only engages about 1 in 10 turns of the key. I have tried putting jumper cables on it I have tried to put the pos to the battery and a pos to the starter, this makes the starter engage every time but the engine won't start. I have good compression, I have spark at the spark plug, it has good gas- I only buy 93 octane and treat it with stabil. I have the air filter off right now so I know it has air, I have poured gas into the spark plug hole and tried to start- nothing. I have visually inspected every wire and wire connection on it, they all seem fine. I have no idea why it won't just run. Any thoughts??
I think we could have more than one issue all at the same time. the starting issue could be a ground wire issue, or a safety switch issue. the starting problem could be related to a valve adjustment issue. Did you reset the valves at .004-.006 after reassembling everything. Sometimes they can get out of adjustment when moving other engines parts around internally.
QUOTE: I have tried putting jumper cables on it I have tried to put the pos to the battery and a pos to the starter, this makes the starter engage every time but the engine won't start.
can you easily spin the engine over by hand? the mower may have to much oil / gas in it. vapor locked. Also you can disconnect everything from the engine to see if it is a safety switch. when it does spin over does it sound normal just no spark? timing could be off if you moved the cam around etc.
