0305059 EVINRUDE COVER, By-pass

Change Filters
See "Fuel System" under "When Required" for procedure to change fuel filters.Belts - Alternator and Fan Drive
Inspect Belts
1. Remove belt guard. 2. Inspect the belts for wear. Replace belts if worn, cracked or frayed.When belt replacement is necessary, belts must be replaced in complete matched sets. Never replace only one belt. The new belt will carry all of the load and consequently, fail rapidly.3. If belts do not require replacement or adjustment, install the belt guard. If belts require adjustment or replacement, do not install the belt guard. See "Adjust Belts" when belt adjustment and/or replacement is necessary.Adjust Belts
To Adjust Alternator Belts
1. Apply a 110 N (25 lb) force perpendicular to the belt, midway between the driving and driven pulley. Measure the belt deflection. Proper belt deflection is 15 to 20 mm (.6 to .8 inch). Adjust the belt tension as required.2. Loosen locknut (1) on the belt tightener rod.3. Turn adjustment nut (2) until correct belt deflection is obtained.4. Tighten locknut (1).5. Check the belt adjustment.6. Install the belt guard.To Adjust Fan Drive Belts
1. Loosen six bolts (1) holding the fan mounting plate to the engine.2. Loosen locknut (2). Turn adjusting screw (3) until the belts are properly adjusted.3. Tighten six bolts (1) and locknut (2).4. Check the belt adjustment. If adjustment is not correct, repeat steps 1 through 3.Fan Drive Bearing and/or Belt Tightener Group
Fan Drive Bearing
Some fan drive groups have a pressure relief fitting (1) and a grease fitting (2). Do not replace the pressure relief fitting with a grease fitting. A failure can result.
Lubricate fan drive bearing grease fitting (2).Belt Tightener Bearing
Some belt tightener groups have a pressure relief fitting (1) and a grease fitting (2). Do not replace the pressure relief fitting with a grease fitting. A failure can result.
Lubricate belt tightener grease fitting (2).Cooling System
Add Coolant Conditioner
At operating temperature, the engine coolant is hot and under pressure.Check the coolant level only when the engine is stopped and the radiator filler cap is cool enough to touch with your bare hand.Remove the radiator filler cap slowly to relieve pressure.Steam can cause personal injury.Cooling System Conditioner contains alkali. Avoid contact with skin and eyes to prevent personal injury.
All water is corrosive at engine operating temperature. Use either Caterpillar Cooling System Conditioner, or Coolant Conditioner Element to treat either plain water or ethylene glycol antifreeze solution. Never use both the cooling system conditioner and the coolant conditioner element at the same time.Do not use Caterpillar Cooling System Conditioner or Coolant Conditioner Elements with Dowtherm 209 Full-Fill coolant. Follow recommendations provided with Dowtherm 209 Full-Fill coolant.
Add .5 liter (1 pint) of Caterpillar Cooling System Conditioner for each 75 liters (20 U.S. gallons) of coolant used. This will maintain the required 3% to 6% concentration of conditioner.
Typical Example1. Remove radiator filler cap slowly to relieve pressure.It may be necessary to drain enough coolant to allow for the addition of cooling system conditioner.2. Add Caterpillar Cooling System Conditioner.3. Inspect radiator filler cap gasket. Replace cap if damaged.4. Install radiator filler cap.Engine Crankcase
Change Oil and Filters
Use caution when draining oil or changing filters. Hot oil or components can cause burns if they contact skin.
With the oil warm and the engine stopped, drain the crankcase. 1. Remove the crankcase drain plug. 2. Open the crankcase drain valve and drain the oil. 3. Use a strap wrench to remove the oil filters. Replace the elements. Make certain all of the old seal is removed from the filter base. 4. Clean the filter base. 5. Coat seal with engine oil. 6. Install the new filter by hand. When the seal contacts the base, tighten 3/4 turn more.
Do not overtighten the filter.
7. Install the crankcase drain plug. 8. Close the crankcase drain valve.9. If a prelube pump is available, fill the oil filter housing and the oil cooler with oil. 10. If prelube pump is not available, then proceed with filling the crankcase. See "Refill Capacities" and "Fuel, Coolant and Lubricant Specifications."11. Crank the engine with the fuel supply line closed until 70 kPa (10 psi) oil pressure shows on the gauge. Open the fuel supply line valve. Start and run the engine. Inspect for leaks. Reduce engine speed to low idle. 12. Maintain oil level to the FULL mark on the ENGINE RUNNING side of the dipstick. Stop the engine.