Buell 2007 LIGHTNING Service Manual

2007 Buell Lightning: Engine 3-45
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Cylinder Head Assemblies
NOTE
See Figure 3-59. Distortion to the head, cylinder and crank-
case studs may result if head screws are not loosened (or
tightened) gradually in the sequence shown.
1. See Figure 3-59. Loosen each head screw 1/8-turn fol-
lowing the sequence shown.
a. Continue loosening in 1/8-turn increments until
screws are loose. Remove head screws.
b. Remove cylinder head, head gasket, and o-rings.
2. Discard head gasket.
3. See Figure 3-56. Remove push rod cover, gasket and
valve tappets.
DISASSEMBLY
1. See Figure 3-60. Clamp VALVE SPRING COMPRES-
SOR TOOL (Part No. HD-34736B) in vise.
2. See Figure 3-60. Compress valve spring with VALVE
SPRING COMPRESSOR.
3. See Figure 3-61. Remove valve keepers, upper collar
and valve spring. Mark valve keepers for reassembly in
their original locations.
4. Use a fine tooth file to remove any burrs on the valve
stem at the keeper groove.
5. Mark valve to ensure that it will be reassembled in the
same head. Remove valve, valve stem seal and lower
collar assembly by hand. No special tools are required to
remove valve stem seal and lower collar assembly.
6. Repeat the above procedure for the other valves.
Figure 3-59. Head Screw Loosening/Tightening Sequence
Figure 3-60. Valve Spring Compressor
(Part No. HD-34736B)
Rear Cylinder
Front Cylinder
3rd
2nd
1st
4th
1st
2nd
3rd
4th
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Buell 2007 LIGHTNING Specifications

General

Year	2007
Manufacturer	Buell
Model	Lightning
Category	Motorcycle
Displacement	1203 cc
Bore x Stroke	88.9 mm x 96.8 mm
Compression Ratio	10.0:1
Fuel System	Electronic fuel injection
Transmission	5-speed
Final Drive	Belt
Rear Suspension	Showa shock absorber
Rear Brakes	Single disc, 1-piston caliper
Engine Type	V-Twin
Ignition	Digital
Front Suspension	Showa inverted fork
Front Brakes	Single disc, 6-piston caliper
Front Tire	120/70 ZR17
Rear Tire	180/55 ZR17
Wheelbase	52.0 inches
Seat Height	30.1 inches
Dry Weight	395 lbs
Fuel Capacity	14.5 liters