Checking the spark plugs (Yamaha XVS 1100 Drag Star)

0

The following procedure applies to all of the spark plugs.

1. Remove: cylinder head covers (1)



2. Disconnect: spark plug cap

3. Remove: spark plug

Caution! Before removing the spark plugs, blow away any dirt accumulated in the spark plug wells with compressed air to prevent it from falling into the cylinders.

4. Check: spark plug type

Incorrect → Change.

Spark plug type (manufacturer):

• BPR7ES (NGK)
• W22EPR-U (DENSO)

5. Check:

• electrode (1)

Damage/wear → Replace the spark plug.

• insulator (2)

Abnormal color → Replace the spark plug.

Normal color is a medium-to-light tan color.



6. Clean: spark plug (with a spark plug cleaner or wire brush)

7. Measure: spark plug gap (a) (with a wire gauge)

Out of specification → Regap.



Spark plug gap: 0.7-0.8 mm

8. Install: spark plug 20 Nm (2.0 m·kg)

Note: Before installing the spark plug, clean the spark plug and gasket surface.

9. Connect: spark plug cap

See this article in russian language

Article about repair motorcycles «Yamaha Drag Star XVS 1100» (1998-2008): «Checking the spark plugs»: https://motoinstruction.ru/en/Yamaha/DragStar/XVS1100/owner/service/114216 <a href="https://motoinstruction.ru/en/Yamaha/DragStar/XVS1100/owner/service/114216">Checking the spark plugs</a> - article about repair motorcycles «Yamaha Drag Star XVS 1100» (1998-2008) from section «Maintenance». [url=https://motoinstruction.ru/en/Yamaha/DragStar/XVS1100/owner/service/114216]Checking the spark plugs[/url] - article about repair motorcycles «Yamaha Drag Star XVS 1100» (1998-2008) from section «Maintenance».