2020 Yamaha Sleds: 
Models Sidewinder SRX LE Sidewinder LTX LE Sidewinder LTX GT, & SE Sidewinder XTX LE & SE Sidewinder BTX LE Sidewinder STX GT SR Viper LTX GT & SE RS Venture TF RS Viking Professional II EPS Transporter 600 VK540F SRX 120R Snoscoot ES
Engine (cyl) 998 (3) 998 (3) 998 (3) 998 (3) 998 (3) 998 (3) 1049 (3) 973 (3) 1049 (3) 599 (2) 535 (2) 123 (1) 192 (1)
Carburetor                          
Type EFI EFI EFI EFI EFI EFI Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW Mikuni EFI 41 EIDW EFI TM33-79 Flat Slides Mikuni BV18-11-84Z1 Mikuni
Main Jet N/A N/A N/A N/A N/A N/A NA NA NA N/A NA 77.5 100
Clip Position N/A N/A N/A N/A N/A N/A NA NA NA N/A NA NA NA
Pilot Jet N/A N/A N/A N/A N/A N/A NA NA NA N/A 1 37.5 37.5
Float Height (mm) N/A N/A N/A N/A N/A N/A NA NA NA N/A 14.4mm 16 N/A
Fuel Screws N/A N/A N/A N/A N/A N/A NA NA NA N/A NA 1 N/A
Pilot Air Jet N/A N/A N/A N/A N/A N/A NA NA NA N/A #65 120 N/A
Idle RPM 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 1450-1550 ICS 1250-1450 1050 +/- 100 N/A
Drive                          
Engagement RPM 3100 3100 3100 3100 3100 4100 3800 2700 2700 4200-4600 2700 NA NA
Shift RPM 8750 8750 8750 8750 8750 8750 8750 8250 8250 8100-8200 6500 NA NA
Belt Type 8JP 8JP 8JP 8JP 8JP 8JP 8JP 8DN 8GS 8NU-E7641-01-00 8DN NA NA
Sheave Ctr to Ctr 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 262-266 mm 268.5 mm 267-270 mm NA 267-270 mm NA NA
Sheave Offset 58.1-61.1mm 58.1-61.1mm 58.1-61.1mm 58.1-61.1mm 58.1-61.1mm 58.1-61.1mm 13.5-16.5mm 13.5-16.5mm 13.5-16.5 mm 38.1 mm 14.5-17.5 mm NA NA
Clutch Weights (rivets) 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8LR00 / 13.3 Alum w/hole outer, 17.2 ctr & inner 8GL00/ 13.3 outer & 13.9 center/inner 8HF00/ 17.2 w/hole ouoter, 17.2 center, 17.2 inner 8KW00/13.3mm outer, 17.2mm center & inner 8ND-E7632-00-00 8AT10/17.2 mm outer NA NA
Roller Type 14.5mm 14.5mm 14.5mm 14.5mm 14.5mm 14.5mm 15.6mm 16mm 15.6 NA 14.5 NA 18/B;ue
Primary Spring G-R-G G-R-G G-R-G G-R-G G-R-G G-R-G B-S-B B-P-B B-Y-B 8NT-E7643-00-00 G-B-G NA NA
Secondary Spring Pink Pink Pink Pink Pink Pink Pink White Pink 8ND-E7643-00-00 Brown NA NA
Secondary Setting  60 60 60 60 60 60 70 60 deg 60 deg NA 50 deg NA NA
Helix Angle 35-39 35-39 35-39 35-39 35-39 35-39 43 deg 39 deg 39 deg 8ND-E7623-00-00 48S ERI2 37 deg NA NA
Gearing  21/41 24/50 21/41 24/50 24/50 21/41 24/50 20/39 20/40 19/50 18/38 NA 22/65
Chain 86L 92L 86L 92L 92L 86L 92L 68L 68L 90 70L NA NA