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Ryobi Homelite RY48ZTR75/100 Manual page 51

Electrical components troubleshooting and testing

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Using The DMM to measure Volts
Before touching the probes of a DMM to
Anything, be sure DMM it is set to the correct
Setting and probes are inserted into the correct jacks
To measure DC voltage:
1. first set the DMM to measure voltage,
ensuring DC (NOT AC) setting
2. Touch the black probe to ground
3. Touch the
Red
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probe to voltage being measured
DMM shows
12.55V DC battery voltage
51

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