buell s1 lightning '97 Manual

Valve guide replacement, if necessary, must be done before
valve seat is ground. It is the valve stem hole in valve guide
that determines seat grinding location. Valve stem-to-valve
guide clearances are listed in 

 If valve stems and/or

guides are worn beyond service wear limits, install new parts.

1.

To remove shoulderless guides, press or tap guides
toward combustion chamber using 

2.

Clean and measure valve guide bore in head.

3.

Measure outer diameter of a new standard valve guide.
The guide diameter should be 0.0020-0.0033 in. (0.051-
0.084 mm). larger than bore in head. If it is not, select
one of the following oversizes: +0.001 in., +0.002 in., or
+0.003 in. (+0.025, +0.05 +0.08 mm) (intake and
exhaust).

4.

 Install shoulderless guides using

Press or drive guide until the tool touches the machined
surface surrounding the guide. At this point, the correct
guide height has been reached.

5.

Ream guides to final size or within 0.0010 in. (0.025 mm)
of final size using 

Use

eral amounts of suitable cutting oil to prevent reamer
chatter.

6.

 Apply the proper surface finish to the

hone with an electric drill, work for a crosshatch pattern
with an angle of approximately 60

°

. 

NOTE

The hone is not intended to remove material.

7.

Exhaust

0.0015-0.0033 in.

0.0040 in.

Intake

0.008-0.0026 in.

0.0035 in.

2771a

5700