Engine Maintenance 9-18
NOTE: Models SL-400, SL-400e, SLX, SLXe and SLXi units do not have a fuel solenoid timer printed circuit board. The
µP-VI controller and standard relay board control the pull-in coil in the fuel solenoid.
NOTE: On units with a TK482, TK 486 or TK 486V engine, the unit may be restarted immediately.
Diagnosing the Integral Fuel Solenoid System
NOTE: The fuel solenoid pull-in coil may require 35 to 45 amperes to pull the solenoid plunger in. The unit’s battery must be
in good condition. If the battery has enough power to crank the engine over, it has enough power to energise the fuel solenoid
pull-in coil.
If you suspect that the engine does not operate because the fuel solenoid is not operating correctly, use the following procedure:
1. Disconnect wire 8S from the starter solenoid.
2. Disconnect the fuel solenoid wire connector from the main wire harness.
NOTE: For SL-400, SL-400e and all SLX/SLXe/SLXi models, refer to the relevant operation and diagnostic’s manual.
Simplified Schematic of Integral Fuel Solenoid System
– TK 482, TK 486 and TK 486V Engines
1. Fuel Solenoid Relay Contacts
2. Fuel Solenoid Pull-in Coil
3. Fuel Solenoid Hold-in Coil
4. Fuel Solenoid Relay Coil
5. Fuel Solenoid Timer (not used with µP-VI controller)
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