Superabrasive
Owner’s Manual – LAVINA® LB36G-S
5/2018
23
FUEL-MINDER USER MANUAL
The SM40 Fuel-Minder is a high-performance, digital fuel control system featuring closed loop feedback, fuel lock-off
capability, emissions safety warnings with shutdown, and an LCD screen for user interface. The system is highly responsive to
changes in engine load, providing optimum the air-to-fuel ratio regardless of operating conditions.
System Components
The following parts are included with the system
Electronics Module
Integrated Wire Harness
Fuel Control Valve
Fuel Control Housing
O2 Sensor
LPG Regulator with lock-off
*Individual items are available as replacement parts if necessary*
Overview of Features
Closed Loop Fuel Management System
The Fuel-Minder uses closed-loop feedback from the O2 sensor to control the amount of fuel introduced to the engine via the
Fuel Control Valve. This technology continuously monitors engine emissions and is capable of making fuel corrections to
compensate for varying engine loads and conditions.
Faulty O2 Sensor Detection
If a faulty O2 sensor is detected, the Fuel-Minder will alert the user within 3-5 minutes from a cold-start. A message will be
displayed on the LCD screen to let the user know that the O2 sensor needs to be replaced.
Built-in Fuel Lockoff Controller
The Fuel-Minder also controls the fuel lockoff and only allows fuel to pass through if it detects the engine is cranking. Once
the Fuel-Minder is powered off from the equipment key switch, the Fuel-Minder closes the fuel lockoff and shuts the engine
down immediately.
Emissions Warnings and Shutdown
If the Fuel-Minder detects engine emissions that are too lean or rich for a period of 5 minutes, it will shut the engine down via
the fuel lockoff. The Red LED will blink and the LCD will display a message alerting the user of the issue and will prompt some
common fix suggestions.
Dual Hour Meters
The Fuel-Minder has two hour meters, one for the engine and the other for equipment. The Engine Hours are resettable,
which should only be done if the engine is replaced. The Equipment Hours (located in Options Menu) is non-resettable and
shows the total hours on the equipment, similar to the odometer of a vehicle.
Battery Voltmeter
This feature allows for real-time display of the battery’s voltage, which also helps for troubleshooting any battery or charging
system issues that may arise.
Engine Tachometer
Displays the current engine speed (in RPM). This should be used to assess proper idle, WOT and engine speed for the
appropriate tooling.
Job Timer
The job timer feature works when it is activated and while the engine is running, and will not continue to run if the
engine is
stopped. The allows for easy timing of jobs or work areas to help determine speed.
Password Protection
Located in the options menu, the password feature allows a maintenance manager or owner to enable a password that
prevents the user from resetting the Service Due alerts without the appropriate pin.
Service Alerts
The Fuel-Minder also provides equipment-specific service alerts for the following items:
