This is my worst 'dumbest' find of the season, I thought I'd share..... A older lady owns this machine, Had her brother bring it in (on my day off) because the battery had went dead. He charged the battery before dropping off; When I pulled the work order it said "Check charging system warranty ?" I grabbed my multimeter and headed out where it was sitting and raised the hood; My first thought..... This thing is over 2 yrs old, A quick look at the code number proved it was 3 yrs old. I then checked the oil level (this is done on EVERY engine before crank-up) and found it black and just below the add mark, It would be fine for the 20-30 second run I needed to check the charging system output. I cranked it up and got a rude awakening, Couldn't get it shut down quick enough. You could hear the valves/counter balance assembly and rod rattling like crazy ! I immediately popped open the air filter cover; This is what I found; Hey..... He gets a "E" for effort leaving the pre-cleaner in right ?!?!? Boss calls the lady and try's to explain the engine is shot and warranty will not cover it, She calls her brother then he calls the boss. Boss finds out brother is the one doing "maintenance" on this thing and says they have a extended warranty, Again boss try's to explain no warranty (we've dealt with extended warranty companies in the past). Here's the fun part ! Boss gets a call from this warranty company, They cop a attitude with him and tell him to look the machine over and estimate the cost to repair. Said THEY decide if it's covered or not..... Hey, It's their dime right..... Boss told me of this so I went out and cranked it back up, Revved it up (while standing behind the machine) and did my test to find the charging system working fine. I think the lady left the key on and the fuel solenoid ran the battery down. Turned the work order in for a new engine and set of blades, It came to roughly $1250.00, We're waiting to hear if this warranty company is STUPID enough to put $1250.00 in a $878.00 Wally World junker the customer tore up themselves...... Oh..... My estimate fee on this one is 1 hr, Just because I can..... Moral of the story; You CAN clean a air filter TOO good !