Phil902 70 #51 Posted October 23, 2019 I failed to include the code on the Briggs number I posted . Here is the full number: 402417 1921 01 87012012 Are you sure the 87012012 is not 78012012? January 20, 1978 sounds correct for a tractor build date of 8180 Definitely 87012012 Phil Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,396 #52 Posted October 25, 2019 Must be a replacement engine with a build code of 87012012 - 1987, 01 is January, 20 is the 20th day. The last 12 is a shift number. No record of Wheel Horse or Toro using a 402417-1921-01 They did use a 402417-0665-01 in 1982 and 1983 in the GT-1642 Twin 8-Speed Garry Share this post Link to post Share on other sites
