How to Change the Oil in Suzuki Vehicles

by Contributing Writer; Updated June 12, 2017

One of the best maintenance chores a boat owner can perform involves regular tune-ups and oil changes. Considering how cheap oil and filters have become, the best result for lasting engine life and performance involves regular oil and filter changes. Oil's chemical lubricating properties and viscosity break down when subjected to pollutants and extreme heat. Oil becomes useless after a prolonged period and fails to lubricate important engine parts. Changing engine oil reduces temperature and friction fatigue on moving parts. Boat owner's should change oil and replace their filter as a regular ritual.

Under The Hood:

 How to Change the Oil in a Suzuki Outboard Motor

Position the trim so your outboard motor sits in the down position. If the motor has only an engine bracket adjustment, remove the tilt pin and place the engine in the down position. If you have a freshwater inlet nozzle port on the lower unit, hook up a garden hose and adapter to the port. If no inlet port exists on your engine, place the lower unit in a full 55-gallon barrel of water. Start the engine and let it run until it reaches normal operating temperature. Shut the engine off and remove the key from the ignition.

Unclasp the top engine cowl case on your engine. It should have pressure snaps. Use a socket and wrench if it has bolts. Put the case aside. Refer to your owner's manual for the location of your oil drain plug and oil filter. On big engines it will be on the right side as you face the front of the boat. Use an Allen wrench socket, extension and ratchet to remove the upper unit side case. Set the side case aside. Pull the dipstick from the top of the engine.

Look for the oil drain Allen socket plug on the bottom of the upper unit engine block. Many times it has white paint on it. Fit your Allen socket to it and unscrew it counterclockwise with a ratchet. Hold a drain pan under the oil flow. Let it drain completely for at least five minutes. Replace the gasket washer on the drain plug with a new one and screw the Allen socket plug back into the block by hand. Tighten it with the Allen socket and wrench.

Use an oil filter wrench to loosen and remove the oil filter, which sits higher up directly over the drain plug. Place the oil drain pan underneath it to catch dribbles. Rub some residual oil on the gasket of a new oil filter and screw it in by hand. Tighten it firmly by hand and no more.

Place a funnel in the dipstick opening at the top of the engine. Look at your repair manual for the proper amount of crankcase oil to add. Some big twin motors will require five or more quarts for a primary fill. Pour in the prescribed quarts and replace the dipstick. Place the key in the ignition and start the motor. Let it run for several minutes.

Shut the engine off and remove the key. Pull the dipstick and wipe it with a rag. Insert the dipstick and take an oil level reading. Add the amount needed to properly fill the crankcase. Insert the dipstick. Replace the engine side case and mounting bolts. Use an Allen wrench or socket to tighten the mounting bolts.

Align the top rubber upper case gasket and replace the top case. Clasp the snaps on the top case by hand or use a socket to tighten the bolts.

Items you will need

  • Boat owner's repair manual

  • Inlet hose and coupler

  • Drum (55-gallon)

  • Allen wrench set

  • Drain pan

  • Socket set

  • Socket extension

  • Oil plug gasket

  • Oil filter wrench

  • Oil filter

  • Engine oil

  • Funnel

  • Rags

 How to Change Oil in a Suzuki 4 Stroke

Allow your motorcycle to cool down after riding it. The engine will be cool to the touch when the temperature is cool enough to proceed with the oil change.

Place a drip pan under the motor and remove the oil plug.

Allow all of the oil to drain out of the motor. After it has drained out, take the oil filter off by twisting the filter counterclockwise.

Take your new filter and screw it on where you took the old one off. After this, refill the reservoir with oil. It will indicate a minimum and a maximum oil level; fill it to the maximum.

Take your old oil and seal it in a container. You can then take it to a garage and they will dispose of it for you.

Drive your motorcycle on a test run and verify the oil level after the engine block has cooled. Refill the oil to the maximum level and the oil change will be complete.

Items you will need

  • Oil drip pan

 How to Change the Oil on a Suzuki LTR 450

Run the engine for five minutes to warm up the oil. Place the drain pan under the engine. Remove the two large bolts in the case and the bolt in the oil tank, using a wrench. Allow the oil to drain for 15 minutes.

Install the two bolts and the oil tank bolt, taking care not to strip the threads. The oil tank has very thin threads, so care must be taken not to overtighten the plug or it will strip.

Remove the oil filter cover, using a wrench. Drop the cover, followed by the spring and the filter. Insert the filter, followed by the spring and then the cover. Tighten it down with the wrench.

Fill the clutch housing with 400 ml and the oil tank with 1400 ml of oil. Run the engine for five minutes. Shut it off and check the level. Do not thread the dipstick in, just drop it down to the base of the cap and withdraw it to check. Add oil as needed.

Items you will need

  • Set of wrenches

  • Drain pan

 How Do I Change the Oil for a Suzuki King Quad?

Locate the engine's oil filler neck on the left side of the crankcase and the oil drain plug under the right side of the crankcase. Place an oil pan beneath the drain plug.

Turn the ignition on and start the ATV's engine. Allow the ATV to idle in place for three minutes to warm the oil to its operating temperature. Stop the engine and turn off the ignition.

Remove the engine oil drain plug with a 17mm socket and allow the oil to drain completely into the drain pan. Clean off the drain plug's tip with a shop towel and reinsert the drain plug into the engine. Tighten the drain plug with a torque wrench.

Locate the oil filter at the front of the engine. Using a cap-style oil filter wrench, unscrew the oil filter from the engine. Wipe away any spilled oil with a shop towel. Screw a fresh oil filter into place by hand until the filter is seated against the engine. Tighten the oil filter additional quarter-turn.

Remove the oil filler cap from the left side of the engine. Place a funnel into the oil filler neck and pour up to three quarts of fresh 10W40 motor oil. Remove the funnel and wipe away any spilled oil before reinserting the oil filler cap.

Turn on the ignition and start the engine. Allow the engine to idle for three minutes to warm the oil to its operating temperature. Stop the engine and check the oil level with the dipstick built into the oil filler cap. Add to raise the oil level oil as needed. Do not add more than 3.5 quarts of oil into the engine. Reinsert the oil filler cap into the engine.

Items you will need

  • Oil drain pan

  • 17mm socket

  • Socket wrench

  • Shop towels

  • Torque wrench

  • Cap-style oil filter wrench

  • Oil filter

  • Funnel

  • 3.5 quarts 10W40 engine oil

 How Do I Change the Oil on a '08 Suzuki Ozark 250?

Place the drain container under the center of the bottom of the engine. Make sure that the drain container is positioned under the metal nut in the center of the crankcase.

Remove the cap from the left side of the engine that says oil on the top of it. Remove the nut from the bottom of the engine using the ratchet and the socket. Drain the oil into the container and then replace the plug on the bottom of the engine.

Insert the funnel into the hole where you removed the cap. Pour 2.5 qts. of 5W40 oil into the crankcase and remove the funnel. Replace the cap on the engine and start the engine to circulate the fresh engine oil.

Items you will need

  • Drain container

  • Ratchet

  • 5/8-inch socket

  • Funnel

  • 2.5 qts. 5W40 four-stroke engine oil

About the Author

This article was written by the It Still Runs team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Runs, contact us.