Display contents
Specifications
★ Compact folding display (protects screen during transport)
★ Back-lit LCD screen (2 row display) displays various motor data in an easy-to-
read format. Display also visible in dark areas.
★ Adjustable motor output from 0.00 〜 8.00V. Motor break-ins can be performed
at preferred voltage.
★ Motor Condition Meter (bar graph display) indicates motor condition.
★ RPM sensor included. Capable of measuring 100 〜 99,900 revolutions.
■ Application
： Designed for R/C electric motors, the MMS measures motor performance,
checks motor condition, and performs motor break-in.
■ Power source ： DC12V only (12V 〜 13V) 14A and above recommended.
■ Compatible motors ： 7-Turn and above (10.00A minimum)
■ Motor ouput
： 0.00 〜 8.00V (Adjustable)
■ Display
： Back-lit LCD display
(Displays voltage, current draw, rpm and condition)
■ Case size
： 158 × 97 × 37mm (Excludes external parts)
■ Weight
： 425g (Including cables)
■ Additional parts ： RPM Sensor and motor cables
Parts Descriptions
Before operating
The display/switch panel (*1) has a clear protective film to prevent
scratches during shipment. Please remove before operating.
Motor (Sold separately)
RPM Sensor
（※ 1）
LCD Display
Power input cable (Red = Positive)
Power input cable (Black = Negative)
Thank you for purchasing the Yokomo MMS Motor Tuner.
The MMS features many functions to provide a quick and easy
way to gauge motor performance.
Please read the instructions in the owner's manual carefully.
Motor voltage adjuster
START/STOP Button
Motor cable (Black = negative)
Motor cable (Red = positive)
RPM（× 100）
Less movement of the bar
indicates better motor
condition.
Condition graph
In most cases a higher number indicates more power. A
motor in bad condition may also cause higher current draw.
Current draw
Adjustable from 0 〜 8V.
Voltage ouput
Yokomo MMS Owners Manual
2002.5.2
