2015 Yamaha Sleds: 
Models APEX & SE APEX XTX SR Viper LTX-DX, LTX-SE, LTX-LE 1.25 SR Viper LTX-LE 1.75 SR Viper RTX-DX, RTX-SE, RTX-LE 1.25 SR Viper RTX-LE 1.70 SR Viper XTX-SE, XTX-LE SR Viper STX-DX,  SR Viper MTX-153, MTX-SE153 SR Viper MTX-LE162, MTX-SE162 RS Vector RS Vector LTX RS Venture RS Venture GT RS Venture TF Venture MP Phazer MTX Phazer, RTX Phazer XTX RS Viking Professional 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) 973 (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 Keihin CVK 40x3 Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Keihin EFI 43EIDW Keihin CVK 40x3 Mikuni BV18-11-84Z1
Main Jet N/A N/A NA NA NA NA NA NA NA NA NA NA 148 NA NA N/A N/A N/A N/A 148 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 45 NA NA N/A N/A N/A N/A 45 37.5
Float Height (mm) N/A N/A NA NA NA NA NA NA NA NA NA NA 16 NA NA N/A N/A N/A N/A 16 16
Fuel Screws N/A N/A NA NA NA NA NA NA NA NA NA NA 2 NA NA N/A N/A N/A N/A 2 1
Pilot Air Jet N/A N/A NA NA NA NA NA NA NA NA NA NA 120 NA NA N/A N/A N/A N/A 120 120
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 1400 +/- 100 1450-1550 1450-1550 1700 +/- 200 1700 +/- 200 1700 +/- 200 1700 +/- 200 1400 +/- 100 1050 +/- 100
Drive                                          
Engagement RPM 3400 3400 3800 3800 3800 3800 3800 3800 3800 3800 3300 3300 3200 3100 3100 3100 4300 3900 3900 2400 NA
Shift RPM 10500 10500 8750 8750 8750 8750 8750 8750 8750 8750 8250 8250 8500 8250 8250 11300 11300 11300 11300 8500 NA
Belt Type 8DN 8DN 8JP 8JP 8JP 8JP 8JP 8JP 8JP 8JP 8DN 8DN 8DN 8DN 8DN 8GS 8GS 8GS 8GS 8DN 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 268.5 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 15 mm  NA
Clutch Weights (rivets) 8HG00/ 17.2 w/hole outer, 17.2 ctr, 17.2 w/hole tip 8HG00/ 17.2 w/hole outer, 17.2 ctr, 17.2 w/hole tip 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 8GL00/ 13.3 outer & 13.9 center/inner 8BU10/empty 8BU10/empty 8FP00/ 17.2 w/hole outer & 13.3 center/inner 8FP00/ 17.2 w/hole outer & 13.3 center/inner 8es/13.9 & 17.2 8HF00/ 3-13.3 w/hole 8HF00/ 13.3 w/hole, 17.2, 17.2 8gc/17.2,17.2 & 17.2 8dn10/10.3 outer 8GC00/ 13.3,10.3,10.3 8GC00/ 13.3,10.3,10.3 8FN/17.2 & 17.2 NA
Roller Type 14.5mm 14.5mm 15.6mm 15.6mm 15.6mm 15.6mm 15.6mm 15.6mm 15.6mm 15.6mm 16.5mm 16.5mm 15mm 15.6mm 14.5mm 14.5mm 15mm 15.6mm 15.6mm 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 B-S-B G-G-G G-G-G G-W-G W-W-W W-S-W P-P-P P-P-P B-G-B G-Y-G P-B-P P-B-P W-B-W NA
Secondary Spring Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink Pink White Blue Red Red Red Pink NA
Secondary Setting  70deg 70deg 70 70 70 70 70 70 40 40 70 deg 70 deg 60 deg 60 deg 70 deg 50 deg 55 deg 45 deg 45 deg 60 deg NA
Helix Angle 51/43 deg 51/43 deg 43 deg 43 deg 43 deg 43 deg 43 deg 43 deg 37 deg 37 deg 43 deg 43 deg 41 deg 41 deg 39 deg 37 deg 37 deg 39 deg 39 deg 39 deg NA
Gearing  24/37 23/37 24/50 21/49 24/50 21/49 21/41 21/41 21/49 21/49 24/38 24/39 22/39 23/39 21/39 18/45 17/41 18/41 19/41 20/39 NA
Chain 70L 68L 92L 92L 92L 92L 86L 86L 90L 90L 70L 70L 70L 70L 68L 82L 80L 80L 80L 68L NA