Buell S1 Lightning Workshop Manual page 157

1
CAUTION
Do not turn engine over until both push rods can be
turned with fingers. Otherwise, damage to push rods or
rocker arms may result.
20. See Figure 3-5. Install fasteners (12, 13, 14 and 15).
Slowly snug all fasteners in small increments (one turn at
a time). Use a cross pattern on the four large bolts (12,
13) that fasten the lower rocker box to head. This will
bleed the lifters. Tighten screws (14) to 90-120 in-lbs
(10.2-13.6 Nm). Tighten bolts (15) to 10-13 ft-lbs (13.6-
18 Nm). Tighten bolts (12, 13) to 15-18 ft-lbs (20-24 Nm).
See Table 3-5.
Table 3-5. Rocker Arm Cover Hardware
ITEM
QTY
(NUMBER)
Bolt (12) 2 5/16-18 X 2-3/4
Bolt (13) 2 5/16-18 X 2-1/2
Screw (14)
2 1/4-20 X 1-1/2
Bolt (15)
3 1/4-20 X 1-1/4
SIZE TORQUE
15-18 ft-lbs
(20-24 Nm)
90-120 in-lbs
(10.2-13.6 Nm)
10-13 ft-lbs
(14-18 Nm)
NOTES
Tubular frame prohibits direct access to bolt (12) on right rear
cylinder. Use TORQUE ADAPTOR (SNAP-ON Part No.
FRDH 181) and TORQUE COMPUTER (Part No. SS-306G)
to correctly assemble.
21. Place new gasket (7), middle rocker cover (5), (with
breather valve on intake side) new gasket (6) and upper
rocker cover (4) on lower rocker box. Install screws (1)
with new fiber seals (2). Tighten screws (1) to 10-13 ft-
lbs (14-18 Nm).
Repeat above procedures for other cylinder.
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