| 1988 Yamaha Sleds: | ||||||||||||||||||||||
| Models | Snowscoot EL SV80EM | Snowscoot SV80M | Viking VK540M | Exciter EX570EM | Exciter EX570M | XL-V XL540M | SR-V SR540M | V-Max VMX540M | Phaser EL PZ480EM | Phaser PZ480M | Enticer Trapper Rev ET340TRM | Enticer Trapper ET340TM | Enticer ET340M | Excel III EC340M | Inviter CF300M | Bravo Trapper BR250TM | Bravo Transporter BR250TSM | Bravo BR250M | ||||
| Engine (cyl) | 79 | 79 | 535 (2) | 569 (2) | 569 (2) | 535 (2) | 535 (2) | 535(2) | 485(2) | 485(2) | 337(2) | 337(2) | 337(2) | 337(2) | 292 (1) | 246 (1) | 246 (1) | 246 (1) | ||||
| Carb Type | Mikuni B26-20 | Mikuni B26-20 | Mikuni B38-34 | Mikuni VM38 | Mikuni VM38 | Mikuni B38-32 | Keihn BD44-38 | Mikuni VM38x 2 | Mikuni BM38-32x 2 | Mikuni BM38-32x 2 | Mikuni B38-32x 2 | Mikuni B38-32x 2 | Mikuni B38-32x 2 | Mikuni B38-32x 2 | Keihn BD38-32 | Keihn BD32-28 | Keihn BD32-28 | Keihn BD32-28 | ||||
| Main Jet | 103.8 | 103.8 | 141.3 | 320 | 320 | 132.5 | 150 | 290 | 143.8 | 143.8 | 132.5 | 132.5 | 135 | 135 | 108 | 105 | 105 | 105 | ||||
| Clip Position | 4 | |||||||||||||||||||||
| Pilot Jet | 62.5 | 62.5 | 90 | 42.5 | 42.5 | 60 | 92 | 40 | 95 | 95 | 95 | 95 | 100 | 100 | 95 | 78 | 78 | 78 | ||||
| Float Height (mm) | 15.6+/- 2 | 15.6+/- 2 | 12.7+/- 2 | 18.1+/-1 | 18.1+/-1 | 12+/- 2 | 15+/- 2 | 18.1+/-1 | 12+/- 1 | 12+/- 1 | 15+/- 1 | 15+/- 1 | 15+/- 1 | 15+/- 1 | 15+/- 2 | 15+/- 2 | 15+/- 2 | 15+/- 2 | ||||
| Fuel Screws | 7/8 | 7/8 | 1 1/4 | 5/8 | 5/8 | 1 1/2 | 2 | 1/2 | 1 1/2 | 1 1/2 | 1 | 1 | 7/8 | 7/8 | 1 1/8 | 1 1/4 | 1 1/4 | 1 1/4 | ||||
| Pilot Air Jet | 0.8 | 0.8 | 100 | 0.5 | 0.5 | 0.7 | 0.7 | 0.7 | 0.7 | 1 | 100 | 100 | 100 | |||||||||
| Idle RPM | 2200 +/- 100 | 2200 +/- 100 | 1200 +/- 100 | 1500 +/- 100 | 1500 +/- 100 | 1200 +/- 100 | 1500 +/- 100 | 1500 +/- 100 | 1600 +/- 100 | 1600 +/- 100 | 1600 +/- 100 | 1600 +/- 100 | 1700 +/- 100 | 1700 +/- 100 | 1100 +/- 100 | 1100 +/- 100 | 1100 +/- 100 | 1100 +/- 100 | ||||
| Drive | ||||||||||||||||||||||
| Engagement RPM | 4000 | 4000 | 2500 | 3700 | 3700 | 3400 | 3400 | 4000 | 3200 | 3200 | 3100 | 3200 | 3000 | 3000 | 3000 | 3200 | 2900 | 3100 | ||||
| Shift RPM | 6700 | 6700 | 6700 | 7250 | 7250 | 6900 | 7200 | 8200 | 6850 | 6850 | 6500 | 6500 | 6500 | 6500 | 5750 | 5900 | 5700 | 5700 | ||||
| Belt Type | ||||||||||||||||||||||
| Sheave Ctr to Ctr | 268.5 mm | 268.5mm | 268.5mm | 268.5mm | 268.5 mm | 305 | 268.5 mm | 268.5 mm | 266 mm | 266 mm | 266 mm | 266 mm | 266 mm | 266 mm | 266 mm | 266 mm | ||||||
| Sheave Offset | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 11 mm | 15 mm | 11 mm | 11 mm | 11 mm | ||||||
| Clutch Weights (rivets) | ||||||||||||||||||||||
| Roller Type | ||||||||||||||||||||||
| Primary Spring | White | Gold-Green | Gold-Green | Wh-Purp | Gold-Wh | Wh-Yell | Blue-Green | Blue-Green | Gold | Red | Red | Red | Gold-Brown | Gold-Pink | None | None | ||||||
| Secondary Spring | White | White | White | Pink | Pink | Pink | Yell-Blue | Yell-Blue | Gold | Gold | None | None | None | None | None | None | ||||||
| Secondary Setting | 50 (2) | A-2 (50) | A-2 (50) | A-2 (50) | B-1 (30) | C-2 (40) | B-1 (60) | B-1 (60) | 192 | 192 | 160 | 160 | 160 | 160 | 160 | 160 | ||||||
| Helix Angle | ||||||||||||||||||||||
| Gearing | 27/44X 14/26 | 27/44X 14/26 | 17/39 | 17/31 | 17/31 | 17/29 | 17/31 | 18/33 | 17/29 | 17/29 | 14/33 | 12/23 | 13/22 | 13/22 | 12/19 | 10/24 | 12/23 | 13/22 | ||||
| Chain | ||||||||||||||||||||||