Fuel EX
This system connects the swingarm to the mainframe with a short rocker linkage (Figure 1).
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Figure 1:
Fuel suspension system
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Inspection
After every 10 hours of use inspect the shock mounting bolts and the pivot bolts for tightness. Remove the nut from the bolt or axle, clean the threads thoroughly, and apply a thread-locking compound (Loctite 242 is excellent). Tighten the bolts to the .
Once a month check for wear of the pivot bearings of the swingarm. Place one hand on top of the rear tire, and grasp the seatpost with the other. Try to move the rear wheel from side to side, and the seatpost up and down. If you hear or feel any looseness, take the bicycle to your Trek dealer for service.
Also check the ABP (Active Braking Pivot) pivot bearings (Figure 2). Tighten the nut to the or take your bicycle to your dealer for service.
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Figure 2:
ABP pivot
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Adjustment
Your shock owner's manual tells you how to adjust the rear shock for most bicycle designs. This information makes tuning suggestions specifically for the Fuel EX. Find the correct pressures for the starting sag in the chart below, then try increments of 5 to 10PSI (0.25 to 0.5ATM).
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Table 1: Fuel EX5 adjustment chart
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Fork
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Body weight
lbs
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Rebound
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Body weight, kg
|
100
|
7
|
45
|
110
|
50
|
120
|
6
|
55
|
130
|
59
|
140
|
63
|
150
|
5
|
68
|
160
|
73
|
170
|
77
|
180
|
4
|
82
|
190
|
86
|
200
|
90
|
210
|
3
|
95
|
220
|
100
|
230
|
104
|
240
|
2
|
109
|
250
|
113
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Rear shock
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
50
|
7
|
45
|
3.4
|
110
|
60
|
50
|
4.1
|
120
|
70
|
6
|
55
|
4.8
|
130
|
80
|
59
|
5.5
|
140
|
90
|
63
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6.2
|
150
|
100
|
5
|
68
|
6.8
|
160
|
110
|
73
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7.5
|
170
|
120
|
77
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8.2
|
180
|
130
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4
|
82
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8.9
|
190
|
140
|
86
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9.6
|
200
|
145
|
90
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9.9
|
210
|
155
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3
|
95
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10.6
|
220
|
165
|
100
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11.3
|
230
|
175
|
104
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12.0
|
240
|
185
|
2
|
109
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12.7
|
250
|
195
|
113
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13.4
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Table 2: Fuel EX6 adjustment chart
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Fork
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Body weight
lbs
|
Air pressure, psi
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Rebound
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Body weight, kg
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Air pressure, atm
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100
|
70
|
12
|
45
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4.8
|
110
|
75
|
50
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5.1
|
120
|
80
|
55
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5.5
|
130
|
85
|
11
|
59
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5.8
|
140
|
90
|
63
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6.2
|
150
|
95
|
68
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6.5
|
160
|
100
|
10
|
73
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6.8
|
170
|
105
|
77
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7.2
|
180
|
110
|
82
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7.5
|
190
|
115
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9
|
86
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7.9
|
200
|
120
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90
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8.2
|
210
|
125
|
95
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8.6
|
220
|
130
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8
|
100
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8.9
|
230
|
135
|
104
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9.2
|
240
|
140
|
7
|
109
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9.6
|
250
|
145
|
113
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9.9
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Rear shock
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
50
|
7
|
45
|
3.4
|
110
|
60
|
50
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4.1
|
120
|
70
|
6
|
55
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4.8
|
130
|
80
|
59
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5.5
|
140
|
90
|
63
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6.2
|
150
|
100
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5
|
68
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6.8
|
160
|
110
|
73
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7.5
|
170
|
120
|
77
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8.2
|
180
|
130
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4
|
82
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8.9
|
190
|
140
|
86
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9.6
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200
|
145
|
90
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9.9
|
210
|
155
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3
|
95
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10.6
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220
|
165
|
100
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11.3
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230
|
175
|
104
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12.0
|
240
|
185
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2
|
109
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12.7
|
250
|
195
|
113
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13.4
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Table 3: Fuel EX7 adjustment chart
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Fork
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
50
|
12
|
45
|
3.4
|
110
|
55
|
50
|
3.8
|
120
|
55
|
55
|
3.8
|
130
|
60
|
11
|
59
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4.1
|
140
|
60
|
63
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4.1
|
150
|
65
|
10
|
68
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4.5
|
160
|
65
|
73
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4.5
|
170
|
70
|
9
|
77
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4.8
|
180
|
75
|
82
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5.1
|
190
|
80
|
86
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5.5
|
200
|
85
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8
|
90
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5.8
|
210
|
90
|
95
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6.2
|
220
|
95
|
100
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6.5
|
230
|
100
|
7
|
104
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6.8
|
240
|
110
|
109
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7.5
|
250
|
120
|
113
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8.2
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Rear shock
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
50
|
7
|
45
|
3.4
|
110
|
60
|
50
|
4.1
|
120
|
70
|
6
|
55
|
4.8
|
130
|
80
|
59
|
5.5
|
140
|
90
|
63
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6.2
|
150
|
100
|
5
|
68
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6.8
|
160
|
110
|
73
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7.5
|
170
|
120
|
77
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8.2
|
180
|
130
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4
|
82
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8.9
|
190
|
140
|
86
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9.6
|
200
|
145
|
90
|
9.9
|
210
|
155
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3
|
95
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10.6
|
220
|
165
|
100
|
11.3
|
230
|
175
|
104
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12.0
|
240
|
185
|
2
|
109
|
12.7
|
250
|
195
|
113
|
13.4
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Table 4: Fuel EX8 and Fuel ex9.8 adjustment chart
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Fork
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
50
|
12
|
45
|
3.4
|
110
|
55
|
50
|
3.8
|
120
|
55
|
55
|
3.8
|
130
|
60
|
11
|
59
|
4.1
|
140
|
60
|
63
|
4.1
|
150
|
65
|
10
|
68
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4.5
|
160
|
65
|
73
|
4.5
|
170
|
70
|
9
|
77
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4.8
|
180
|
75
|
82
|
5.1
|
190
|
80
|
86
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5.5
|
200
|
85
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8
|
90
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5.8
|
210
|
90
|
95
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6.2
|
220
|
95
|
100
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6.5
|
230
|
100
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7
|
104
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6.8
|
240
|
110
|
109
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7.5
|
250
|
120
|
113
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8.2
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Rear shock
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Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
105
|
7
|
45
|
7.2
|
110
|
115
|
50
|
7.9
|
120
|
125
|
6
|
55
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8.6
|
130
|
135
|
59
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9.2
|
140
|
145
|
63
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9.9
|
150
|
155
|
5
|
68
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10.6
|
160
|
165
|
73
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11.3
|
170
|
175
|
77
|
12.0
|
180
|
185
|
4
|
82
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12.7
|
190
|
195
|
86
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13.4
|
200
|
205
|
90
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14.0
|
210
|
215
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3
|
95
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14.7
|
220
|
225
|
100
|
15.4
|
230
|
235
|
104
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16.1
|
240
|
245
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2
|
109
|
16.8
|
250
|
255
|
113
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17.5
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Table 5: Fuel EX9 and Fuel ex9.9 adjustment chart
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Fork
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Body weight
lbs
|
Air pressure, psi
|
Rebound
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LS Comp
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Body weight, kg
|
Air pressure, atm
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100
|
50
|
12
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8 out
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45
|
3.4
|
110
|
55
|
50
|
3.8
|
120
|
55
|
55
|
3.8
|
130
|
60
|
11
|
59
|
4.1
|
140
|
60
|
63
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4.1
|
150
|
65
|
10
|
7 out
|
68
|
4.5
|
160
|
65
|
73
|
4.5
|
170
|
70
|
9
|
77
|
4.8
|
180
|
75
|
6 out
|
82
|
5.1
|
190
|
80
|
86
|
5.5
|
200
|
85
|
8
|
90
|
5.8
|
210
|
90
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5 out
|
95
|
6.2
|
220
|
95
|
100
|
6.5
|
230
|
100
|
7
|
104
|
6.8
|
240
|
110
|
4 out
|
109
|
7.5
|
250
|
120
|
113
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8.2
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Rear shock
|
Body weight
lbs
|
Air pressure, psi
|
Rebound
|
Body weight, kg
|
Air pressure, atm
|
100
|
105
|
7
|
45
|
7.2
|
110
|
115
|
50
|
7.9
|
120
|
125
|
6
|
55
|
8.6
|
130
|
135
|
59
|
9.2
|
140
|
145
|
63
|
9.9
|
150
|
155
|
5
|
68
|
10.6
|
160
|
165
|
73
|
11.3
|
170
|
175
|
77
|
12.0
|
180
|
185
|
4
|
82
|
12.7
|
190
|
195
|
86
|
13.4
|
200
|
205
|
90
|
14.0
|
210
|
215
|
3
|
95
|
14.7
|
220
|
225
|
100
|
15.4
|
230
|
235
|
104
|
16.1
|
240
|
245
|
2
|
109
|
16.8
|
250
|
255
|
113
|
17.5
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Lubrication
No lubrication is required for the shock or the pivot of your Trek rear suspension bicycle. Avoid all lubricants as they may damage the cartridge or composite bearings. For best results and long life, simply wash the shock and pivot area with a solution of soap and water, or just water.
