346-01032-0 Tohatsu GASKET, THERMOSTAT

Walk-Around Inspection
For any type of leak (coolant, lube, or fuel) clean up the fluid. If leaking is observed, find the source and correct the leak. If leaking is suspected, check the fluid levels more often than recommended until the leak is found or fixed, or until the suspicion of a leak is proved to be unwarranted.
To obtain maximum service life for your engine, make a thorough inspection before starting the engine. Make a walk-around inspection of the installation. Look for items such as oil or coolant leaks, loose bolts and trash buildup. Remove any trash. Make repairs, if necessary.
The guards must be in the proper place. Repair damaged guards or replace missing guards.
Ensure that the areas around the rotating parts are clear.Air Inlet System
Unburned gas in the air inlet and exhaust system may ignite when the engine is started. Personal injury and/or property damage may result.Before starting an engine that may contain unburned gas, purge the unburned gas from the air inlet and exhaust system. Refer to the topic on purging unburned gas in the "Starting the Engine" section.
Ensure that the air inlet piping and the air filters are in place.
Ensure that all clamps and connections are secure.Cooling System
Inspect the cooling system for leaks or loose connections. Inspect the condition of all the pipes for the cooling system. Ensure that the connections are properly clamped.
Inspect the water pumps for evidence of leaks.
Check the coolant level. Add coolant, if necessary. For information on the proper coolant to use, refer to this Operation and Maintenance Manual, "Refill Capacities and Recommendations" (Maintenance Section).Driven Equipment
If necessary, check the oil levels of the driven equipment. Perform any maintenance that is required for the driven equipment. Refer to the literature that is provided by the OEM of the driven equipment.
If the engine is equipped with a clutch, ensure that the clutch is disengaged.
For generator set engines, ensure that the main circuit breaker is open.Electrical System
Inspect the wiring for the following conditions:
Loose connections
Wiring that is worn or frayedInspect the gauge panel and the control panel for good condition. Reset any shutoff or alarm components.Lubrication System
Illustration 1 g01140341
Engine oil level gauge
(1) "ADD" mark
(2) "RUNNING FULL" mark
(3) "STOPPED FULL OIL COLD NO PRELUBE" mark
Check the engine oil level. Add engine oil if the level is in the "ADD" zone. If the engine is running, maintain the level in the "RUNNING FULL" zone. For information on the proper engine oil to use, refer to this Operation and Maintenance Manual, "Refill Capacities and Recommendations" (Maintenance Section).
Check for leaks at the following components: crankshaft seals, crankcase, engine oil filters, plugs for the engine oil gallery, sensors and valve covers.
Inspect the tubes, tee pieces, and clamps on the crankcase breathers.
If the engine has an air cleaner for crankcase ventilation, inspect the air cleaner service indicator. Service the air cleaner filter element when the yellow diaphragm enters the red zone, or the red piston locks in the visible position.Fuel System
Inspect the fuel lines for loose fittings and leaks. Ensure that the fuel lines are properly clamped.
Ensure that the fuel is supplied to the engine at the correct pressure for the application.G3600 engines use a fuel pressure of 310 14 kPa (45 2 psi).Hydraulic Actuator System
Check the level of the oil in the tank for the hydraulic actuator system. Make sure that the oil is between the "ADD" and "FULL" marks on the oil level gauge. For information on the proper oil to use, refer to this Operation and Maintenance Manual, "Refill Capacities and Recommendations" (Maintenance Section).Starting System
Ensure that the barring device is fully disengaged.
Drain moisture and sediment from the air tank and from any other air piping.
Check the oil level in the lubricator for the air starting motor. Keep the lubricator at least half full. Add oil, if necessary. Use nondetergent "10W" oil for temperatures that are greater than 0 °C (32 °F). Use air tool oil for temperatures that are below 0 °C (32 °F).
Check the air pressure before starting. Starting motors with vanes require air pressure in a range of 620 to 1550 kPa (90 to 225 psi). Air turbines require air pressure in a range of 414 to 620 kPa (60 to 90 psi) or 690 to 1034 kPa (100 to 150 psi).
Open the air supply valve for the air starting motor.Note: If the engine is equipped with a system for external support, prepare the system before starting the engine. Ensure that all of the systems for engine support are enabled. Perform all prestart checks for the control system.