Yamaha YZF-R125 Quiz
Electrical system

Checking the spark plug cap

In this manual: Electrical system
General information — 15Specifications — 14Periodic checks and adjustments — 41Chassis — 67Engine — 76Cooling system — 12Fuel system — 10Electrical system — 61Troubleshooting — 13
~1min read

1. Check:

Spark plug cap resistance Out of specification Replace.


a. Remove the spark plug cap from the spark plug lead.

b. Connect the pocket tester ( × 1k)
to the spark plug cap as shown.


Checking the spark plug cap

c. Measure the spark plug cap resistance.

Test yourself

A quick Yamaha YZF-R125 quiz: every answer comes with an explanation and a link to the manual page.