2016 Yamaha Sleds: 
Models APEX & LE APEX X-TX 1.25, 1.75 & LE 1.75 SR Viper LTX-DX, SE , LE 1.25 SR Viper STX-DX 137 SR Viper RTX-DX, RTX-SE, RTX-LE 1.25 SR Viper XTX-SE, XTX-LE SR Viper STX-DX 146,  SR Viper MTX-141 SR Viper MTX-153, LE & SE SR Viper MTX-162, LE & SE RS Vector, LE RS Vector XTX 1.25 RS Vector XTX 1.75 & LE 1.75 RS Venture RS Venture TF, LE Phazer MTX Phazer, RTX Phazer XTX Venture MP RS Viking Professional II SRX 120
Engine (cyl) 998 (4) 998 (4) 1049 (3) 1049 (3) 1049 (3) 1049 (3) 1049 (3) 1049 (3) 1049 (3) 1049 (3) 973 (3) 973 (3) 973 (3) 973 (3) 973 (3) 499 (2) 499 (2) 499 (2) 499 (2) 1049 (3) 123 (1)
Carburetor                                          
Type Mikuni EFI 39EIDWx2 Mikuni EFI 39EIDWx2 Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Keihin CVK 40x3 Mikuni EFI 41 EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Mikuni EFI 41 EIDW Mikuni BV18-11-84Z1
Main Jet N/A N/A NA NA NA NA NA NA NA NA NA NA NA 148 NA N/A N/A N/A N/A NA 77.5
Clip Position N/A N/A NA NA NA NA NA NA NA NA NA NA NA NA NA N/A N/A N/A N/A NA NA
Pilot Jet N/A N/A NA NA NA NA NA NA NA NA NA NA NA 45 NA N/A N/A N/A N/A NA 37.5
Float Height (mm) N/A N/A NA NA NA NA NA NA NA NA NA NA NA 16 NA N/A N/A N/A N/A NA 16
Fuel Screws N/A N/A NA NA NA NA NA NA NA NA NA NA NA 2 NA N/A N/A N/A N/A NA 1
Pilot Air Jet N/A N/A NA NA NA NA NA NA NA NA NA NA NA 120 NA N/A N/A N/A N/A NA 120
Idle RPM 1500 +/- 100 1500 +/- 100 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1400 +/- 100 1450-1550 1700 +/- 200 1700 +/- 200 1700 +/- 200 1700 +/- 200 1450-1550 1050 +/- 100
Drive                                          
Engagement RPM 3400 3400 3800 3800 3800 3800 3800 3900 3900 3900 3100 3100 3100 3200 2700 4300 3900 3900 3100 2700 NA
Shift RPM 10500 10500 8750 8750 8750 8750 8750 8750 8750 8750 8250 8250 8250 8500 8250 11300 11300 11300 11300 8250 NA
Belt Type 8DN 8DN 8JP 8JP 8JP 8JP 8JP 8JP 8JP 8JP 8DN 8DN 8DN 8DN 8DN 8GS 8GS 8GS 8GS 8GS NA
Sheave Ctr to Ctr 268.5 mm 268.5 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 268.5 mm 267-270 mm NA
Sheave Offset 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5mm 15mm 15mm 15mm 15mm 13.5-16.5 mm NA
Clutch Weights (rivets) 8HG00/ 13.3 w/hole outer, 17.2 ctr, 17.2 w/hole inner 8HG00/ 13.3 w/hole outer, 17.2 ctr, 17.2 w/hole inner 8GL00/ 13.3 outer & 13.9 center/inner 8GL00/ 13.3 outer & 13.9 center/inner 8GL00/ 13.3 outer & 13.9 center/inner 8GL00/ 13.3 outer & 13.9 center/inner 8GL00/ 13.3 outer & 13.9 center/inner 8BU10/empty 8BU10/empty 8BU10/empty 8FP00/ 17.2 w/hole outer & 13.3 center/inner 8FP00/ 17.2 w/hole outer & 13.3 center/inner 8FP00/ 17.2 w/hole outer & 13.3 center/inner 8es/13.9 outer & 17.2 inner 8HF00/ 17.2 w/hole ouoter, 17.2 center, 17.2 inner 8dn10/10.3 outer 8GC00/ 13.3,10.3,10.3 8GC00/ 13.3,10.3,10.3 8gc/17.2,17.2 & 17.2 8KW00/13.3mm outer, 17.2mm center & inner NA
Roller Type 14.5mm 14.5mm 15.6mm 15.6mm 15.6mm 15.6mm 15.6mm 14.5mm 14.5mm 14.5mm 14.5mm 14.5mm 14.5mm 15mm 16mm 15mm 15.6mm 15.6mm 14.5mm 15.6 NA
Primary Spring B-S-B B-S-B B-S-B B-S-B B-S-B B-S-B B-S-B G-G-G G-G-G G-G-G Y-S-Y W-S-W W-S-W W-S-W B-P-B G-Y-G P-B-P P-B-P B-G-B B-Y-B NA
Secondary Spring Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink White Red Red Red Blue Pink NA
Secondary Setting  70deg 70deg 70 70 70 70 70 40 40 40 70 deg 70 deg 70 deg 60 deg 60 deg 55 deg 45 deg 45 deg 50 deg 60 deg NA
Helix Angle 51/43 deg 51/43 deg 43 deg 43 deg 43 deg 43 deg 43 deg 37 deg 37 deg 37 deg 43 deg 43 deg 43 deg 41 deg 39 deg 37 deg 39 deg 39 deg 37 deg 39 deg NA
Gearing  24/37 23/37 24/50 24/50 24/50 21/41 24/50 21/49 21/49 21/49 24/38 23/39 24/37 22/39 20/39 17/41 18/41 19/41 18/45 20/40 NA
Chain 70L 68L 92L 92L 92L 86L 92L 90L 90L 90L 70L 70L 70L 70L 68L 80L 80L 80L 82L 68L NA