buell s1 lightning '97 マニュアル

Verify engine ignition timing. See 

 on

. Adjust ignition timing, if necessary, and then per-

form the following V.O.E.S. check:

1.

Run engine at regular idle. Disconnect V.O.E.S. vacuum
hose from carburetor fitting. See 

 in Section 7.

a. 

On world models, idle speed is 950-1050 RPM.

b. 

On California models, idle speed is 1150-1250 RPM.

2.

Temporarily plug the open carburetor fitting. Ignition tim-
ing should retard (front cylinder advance timing mark dis-
appears from view in timing inspection hole) and engine
RPM should decrease.

3.

Connect V.O.E.S. vacuum hose to carburetor fitting. Tim-
ing mark should reappear and engine speed should
increase to previous RPM.

If speed does not first decrease and then increase as
described, check V.O.E.S. wire connection to ignition module. 

The V.O.E.S. can also be checked using an ohmmeter and a

1.

Remove V.O.E.S. from vehicle. See 

 in Section 7.

2.

 Connect two ohmmeter leads to the two

V.O.E.S. leads. 

3.

Connect vacuum pump to V.O.E.S. vacuum fitting.

4.

Slowly squeeze vacuum pump handle. Observe vacuum
gauge and ohmmeter readings. Ohmmeter should indi-
cate switch closed (zero ohms) with an applied vacuum
of 5.0-6.0 in. (127.0-152.4 mm) mercury (Hg). If a vac-
uum reading of more than 6.0 in. (152.4 mm) Hg or less
than 5.0 in. (127.0 mm) Hg is required to close the
switch, then the switch must be replaced.

5.

Install V.O.E.S. See 

 in Section 7.

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