Posted 6/9/2014 17:57 (#3910096) Subject: rebuilding John Deere 3020 gas engine
Pulled sleeves have 3 o ring seals - 1 red 2 - black got new rebuilding kit and kit only come with 2 o rings 1 red and 1 black., check on John deere parts site and that block # saids it only takes 2 o rings but there is three grooves.
Does anyone Know?