AD Boivin 2002 Snow Hawk, Service Manual

Page: 172 / 173

5
MAIN JET CHART
@CARB
°C 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Feet
°F 0 305 610 914 1219 1524 1829 2134 2438 2743 3048 Meter
20
230 220 220 210 200 190 180 180 170 160 160
PTO
68 220 210 200 190 190 180 170 160 160 150 150 MAG
25
230 220 210 200 190 190 180 170 170 160 150
PTO
77
210 210 200 190 180 170 170 160 150 150 140
MAG
30
220 220 210 200 190 180 180 170 160 150 150
PTO
86
205 200 200 190 180 170 170 160 150 150 140
MAG
35 220 210 200 190 190 180 170 160 160 150 140 PTO
95
210 200 190 190 180 170 160 160 150 140 140
MAG
40 210 210 200 190 180 170 170 160 150 150 140 PTO
104 200 200 190 180 170 170 160 150 150 140 130 MAG
45 210 200 190 180 180 170 160 150 150 140 140 PTO
113 200 190 180 180 170 160 150 150 140 140 130 MAG
50 200 190 190 180 170 160 160 150 140 140 130 PTO
122 190 190 180 170 160 160 150 140 140 130 130 MAG
NOTE: These values are suggestions only, tuners are reminded to pay very close attention to plug color and performance
feel in order to avoid lean burndown.
PILOT JET CHART
@CARB
°C 0 1000 2000 3000 4000 5000 6000 7000 8000 9000 10000 Feet
°F 0 305 610 914 1219 1524 1829 2134 2438 2743 3048 Meter
20 65 60 60 55 55 55 50 50 45 45 45 PTO
68 65 60 60 55 55 55 50 50 45 45 45 MAG
25
65 60 60 55 55 50 50 50 45 45 40
PTO
77 65 60 60 55 55 50 50 50 45 45 40 MAG
30
60 60 55 55 55 50 50 45 45 45 40
PTO
86 60 60 55 55 55 50 50 45 45 45 40 MAG
35 60 60 55 55 50 50 45 45 45 40 40 PTO
95
60 60 55 55 50 50 45 45 45 40 40
MAG
40 60 55 55 50 50 50 45 45 40 40 40 PTO
104
60 55 55 50 50 50 45 45 40 40 40
MAG
45 60 55 55 50 50 45 45 45 40 40 40 PTO
113
60 55 55 50 50 45 45 45 40 40 40
MAG
50 55 55 50 50 45 45 45 40 40 40 35 PTO
122 55 55 50 50 45 45 45 40 40 40 35 MAG
NOTE: * When the difference between suggested pilot jet size is less than 15, the correction can be made through airscrew adjustment.
*Shaded areas indicate stock set-up
TUNING: *The "zero setting" for a pilot jet is with the airscrew set to 1.5 turns out from full tight (I.e. zero position).
*To effectively reduce the size of a pilot jet, turn the airscrew further out; 1/4 turn outwards [CCW] is equal to reducing a pilot
jet one size, or equivalently reducing the jet number by 5.
*Airscrew range of adjustment varies from 1 to 3 turns outwards. 1 to 2 turns outwards is optimal.