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Follow this guide to replace the ignitor on a Mi-T-M heater model MH-0190-0M10.
After the pump and motor are reinstalled, use a flat blade screwdriver to adjust the pump pressure to 7.5 PSI as instructed on page 17 of the user manual.
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Flip the power switch into the OFF position.
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Unplug any extension cords from the included power cord.
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Use a 5/16 inch socket or Phillips screwdriver to remove the eight screws securing the upper shell, four on each side.
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Lift the upper shell straight up off of the machine to remove it.
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Use a 5/16 inch socket or Phillips screwdriver to remove the four bolts securing the right-side cover.
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Tilt the right-side cover down to access the PCB board.
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Use needle nose pliers to remove the wire with the blue connector.
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Remove the wire with the clear connector.
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Remove the right-side cover.
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Use a 5/16 inch socket or Phillips screwdriver to remove the screw securing the two green ground wires to the frame.
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Use a pair of needle nose pliers to release the hose clamp from the fuel line.
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Slide the hose clamp off of the nipple, about one inch down the fuel line.
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Pull to disconnect the fuel line from the motor and pump assembly.
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Use a pair of needle nose pliers to remove the fuel line hose clamp.
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Use a pair of needle nose pliers to disconnect the wires connecting the motor and pump assembly to the main PCB board:
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One red cable labeled MOTOR 2 on the main PCB board
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One orange cable labeled MOTOR 1 on the main PCB board
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Use a pair of flush cutters to cut the cable tie harnessing the wires running from the main PCB assembly.
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Remove the cable tie.
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Use a pair of flush cutters to cut the cable tie harnessing the orange, red, white, and black wires near the fuel line.
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Use a pair of flush cutters to cut the cable tie harnessing the orange and red wires next to the motor.
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Use a Phillips screwdriver to remove the screw securing the capacitor band clamp.
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Remove the capacitor from the band clamp.
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Feed the orange and red wires out through the opening in the lower shell.
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Use a 5/16 inch socket or Phillips screwdriver to remove the four bolts securing the left-side cover.
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Use a 5/16 inch socket or Phillips screwdriver to remove the four screws securing the motor mount bracket, two on each side.
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Lift the motor, pump, and bracket assembly straight up out of the machine.
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Grab the spark plug wires by their boots and pull firmly to disconnect them from the spark plug.
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Feed the wires through the opening in the lower shell.
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Use a pair of needle nose pliers to depress the locking tab on the red wiring harness's connector labeled IG on the main PCB assembly.
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With the locking tab depressed, pull to remove the red wire from its header on the PCB.
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Use your fingers to bend the metal tab on the lower shell holding the igniter in place upward to create space for the igniter to be removed.
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Lift the igniter out from underneath the lower shell.
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Feed the red wire harness through the opening in the lower shell.
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Remove the spark plug wires from underneath the lower shell.
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Remove the igniter.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
