SECTION 4: ELECTRICAL SYSTEM
On most larger commercial engines (27 hp and up), the
25 amp main fuse is located about 3˝ from the starter on
the engine. (shown in first image on right). On smaller
commercial and light duty commercial mowers, the 25
amp main fuse is located just behind the battery connected
to the starter solenoid. (Shown in second image on right).
Always check the condition of the wiring harness ground
cable. The ground is located just inside of the right side
fuel tank on most models. Ensure that the ground is
connected, clean, and tight. On some models, this wire
may be connected to the negative side of the battery.
Check the condition and connection of the relays located
under the seat. Ensure that they are clean and connected.
Make sure that wire terminal ends have not been pushed
out of the relay block.
On most models, the red wire coming out of the engine is
the charging wire from the alternator. Check for 13.6—14.2
volts DC at this wire with engine at full throttle.
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