Buell S1 Lightning User Manual

3-11
CYLINDER HEAD
REMOVAL
Before removing the cylinder head assembly, see DISAS-
SEMBLING ENGINE FOR CYLINDER HEAD REPAIR on
page 3-8. The rocker arm covers and internal components
must be removed before removing cylinder heads.
1. See Figure 3-5. Remove screws (1) and fiber seals (2).
Discard fiber seals.
1
CAUTION
All washers and fasteners used in the V
2
TM
engine are
hardened. Do not mix or replace hardened washers and
fasteners with unhardened parts. Do not reuse fiber
cover seals. These actions may result in accelerated wear
and increased noise.
2. Remove top (4) and middle (5) sections of rocker box.
Remove and discard gaskets (6, 7 and 8).
Figure 3-5. Rocker Arm Cover
1. Screws (4)
2. Fiber seal (4)
3. Umbrella Valve (2)
4. Upper rocker cover
5. Middle rocker cover
6. Gasket
7. Gasket
8. Gasket
9. Rocker arm shafts
10. Rocker arm
11. Rocker arm
12. Bolt and washer (2)
13. Bolt and washer (2)
14. Screw and washer (2)
15. Bolt and washer (3)
16. Gasket
17. Gasket
18. Lower rocker arm cover
19. Rocker arm bushing (8)
5
3
7
4
1
2
6
12
13
14
9
8
10
19
11
15
16
17
18
xlhrock

Buell S1 Lightning Specifications

General

Transmission	5-speed
Rear Brakes	Single 230mm disc, single-piston caliper
Compression Ratio	10.0:1
Ignition	Electronic
Engine Type	Air-cooled, four-stroke, 45° V-twin
Rear Suspension	Showa monoshock, adjustable preload, compression and rebound damping
Front Brakes	Single 340mm disc, 6-piston caliper
Seat Height	775 mm
Bore x Stroke	88.8 mm x 96.8 mm
Fuel System	Carburetor
Frame	Tubular steel
Tires	Front: 120/70 ZR17, Rear: 170/60 ZR17