new guy needs help, 2000 Suzuki Quadmaster 500 backfiring

[hydaftl]

hello and thanks for reading.

i have just recieved a 2000 suzuki quad master 500 it has 1200 miles on it and it needs help. first off the reason i got it for cheap is that the starter reduction gears broke the block where they mount so it has to be pull started. after getting it home i made sure all the metal peaces were removed from inside the stator cover. then i put it all together and started it up. it will idle but if i rev it up it will stumble and back fire real bad. i have cleaned the spark plug and the carb and the air filter. it looks like the cdi box has been replaced i can see butt conectors and bare wire( somebody did a bad job). could this be a timming issue? how do i check time?. any help would be great and no i dont have any manual.

[hydaftl]

wow 41 veiws and no help for a new guy. anyway i found the answer from a local atv guy. it was a low battery. runs great now

[Stoopidbot1]

the battery was causing the backfiring?

[hydaftl]

yes sir. i would have never had guessed that one. i cleaned the fuel tank,carb,and plug and made no difference. so i asked a local rider that said he had the same problem and it ended up being the battery. so i charged the battery overnight (it was dead) and the next day fired it up and it ran like a charm.

[Stoopidbot1]

That is something I would have never guessed.