clueless 2,991 #1 Posted August 10 Picked up a nice 48" deck form the '70s/ early '80s, no model number. Anybody know when they switched from the double D blade bolt pattern? Share this post Link to post Share on other sites
gwest_ca-(File Mod) 11,043 #2 Posted August 10 Mower DNA 48" side discharge 1966-1967 model RL-486 replaced by 1968 model 5-1481 1969 model 5-1482 1970 model 5-1483 1971 model 5-1200 1972 model 5-1201 1973 model 5-1202 1973-1974 model 5-1210 1975 model 5-1211 1976 model 65-48MS01 1976 model 65-48MS02 1977 model 75-48MS01 - These all used blades with 5/8" x 3/4" double-D center hole unless the spindles have been upgraded. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Note - 3/4" or .750" is 19.05mm 1977 model 75-48MS02 - Uses 6203 bearings with 3/4" ID - (First deck to use blades with 3/4" center hole) - Originally had a nylon-insert nut holding spindle pulley on. 1978 model 85-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1979 model 95-48MS00 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1979 model 95-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1980 model 05-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1981-1983 model 05-48MS02 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1984 model 05-48MS03 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. Note - 17mm is .669" 1985 model 05-48MS04 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1986-1988 model 05-48MS05 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1987-1988 model 05-48SC01 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1989 model 15-48SC01 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1990 model 15-48SC02 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1991-1992 model 15-48SC03 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1993-1997 model 78360 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1998-2007 and 2009-12 model 78361 - Uses 6203 bearings with 17mm ID - (These all use blades with 3/4" center hole) - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 2 Share this post Link to post Share on other sites
clueless 2,991 #3 Posted August 10 59 minutes ago, gwest_ca said: Mower DNA 48" side discharge 1966-1967 model RL-486 replaced by 1968 model 5-1481 1969 model 5-1482 1970 model 5-1483 1971 model 5-1200 1972 model 5-1201 1973 model 5-1202 1973-1974 model 5-1210 1975 model 5-1211 1976 model 65-48MS01 1976 model 65-48MS02 1977 model 75-48MS01 - These all used blades with 5/8" x 3/4" double-D center hole unless the spindles have been upgraded. ------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Note - 3/4" or .750" is 19.05mm 1977 model 75-48MS02 - Uses 6203 bearings with 3/4" ID - (First deck to use blades with 3/4" center hole) - Originally had a nylon-insert nut holding spindle pulley on. 1978 model 85-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1979 model 95-48MS00 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1979 model 95-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1980 model 05-48MS01 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1981-1983 model 05-48MS02 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. 1984 model 05-48MS03 - Uses 6203 bearings with 3/4" ID - Originally had a nylon-insert nut holding spindle pulley on. Note - 17mm is .669" 1985 model 05-48MS04 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1986-1988 model 05-48MS05 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1987-1988 model 05-48SC01 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Single rear shaft for 2 rollers 1989 model 15-48SC01 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1990 model 15-48SC02 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1991-1992 model 15-48SC03 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1993-1997 model 78360 - Uses 6203 bearings with 17mm ID - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers 1998-2007 and 2009-12 model 78361 - Uses 6203 bearings with 17mm ID - (These all use blades with 3/4" center hole) - Originally had a standard nut and lockwasher holding spindle pulley on. Two rear shafts for 2 rollers Thanks my man. Share this post Link to post Share on other sites
peter lena 8,627 #4 Posted August 11 @clueless have any thought about , clean out / re greasing the related bearings ? having done all of my related deck / mule drive / pto cone bearings , with a hi temp / stress certified grease , the difference is quietly amazing . most of my bearings are 6203 , so a grease change out is easy , every ROTATIONAL MOVEMENT POINT , needs a polyurea rated grease , to stand up , just a thought , pete Share this post Link to post Share on other sites
