New to Inboard / Outboard's - Boat Talk - Chaparral Boats Owners Club. By BigRiver, October 18, 2013 in Boat Talk. Share Followers 0. Every year: Oils (drive, engine), clean air filter thing, fuel filter. Engine oil is every 30-50 hours so if you use the boat a lot you might be changing a few times a year. Every other year: Impeller (can go. Attach a garden hose to the motor flush tool and place it over the vents on the out drive. Turn the water supply on and allow the air bubbles to work out of the hose before starting the engine. Step 5 Start the engine and allow it to run for five minutes. Step 6 Spray fogging oil in and around the carburetor until the engine dies out. Check for damage to the skeg. Repair and paint damaged areas. 4. Belts Press between pulleys; belts should spring back. Look for cracks, brittleness and dry rot, and abnormal wear. Look for thin areas. Rusty, pitted pulleys often indicate an engine water leak. Belt-dust residue also indicates damaged pulleys. Advertisement. Shut down the engine right away to prevent damage and try to find out what it is preventing the flow inside the tube. You’ll also want to get rid of any fuel left in the carburetor by disconnecting the fuel line and letting the engine burn whatever is left. Once you’re finished, turn off the engine and the battery switch. ($8.77 - $469.95) Find great deals on the latest styles of Inboard boat engines. Compare prices & save money on Boats, Kayaks & Boating Equipment. ... Moeller 09908500 Motor Flusher-Pro InboardMotor Flusher-Pro InboardEasily installs in seconds for out of the water engine flushing applications. Designed to fit inboards, performance ski boats. Sierra 18-4226 Drain Plug Replaces 22-806608A02. $4.49. $3.49. Sierra 18-4226 Mercruiser Blue Plastic Drain Plug This Sierra 18-4226 drain plug is widely used for Mercruiser V4, V6 and V8 marine engines. Fits Mercruiser cylinder blocks and exhaust manifolds Comes complete with o-ring Interchangeable. Attach a pair of earmuffs to the hose. Slide the earmuffs over the lower unit, so they fully cover the engine’s water intakes. Turn on the water, and make sure it’s flowing around both sides of. Engine ear muffs or outboard motor flushing will not be a mystery anymore! Flushing boat engine after saltwater is important for the life of your inboard or outboard engine to reduce corrosion. Let the springtime fun begin by de-wintering your boat in seven simple steps! Step 1: Take a look at the battery. Step 2: Put the electronics to the test. Step 3: Change the oil in the engine. Step. .