Table of Contents
- 1 How do you fill the lower unit oil on a Mercury outboard?
- 2 How do I check my lower unit oil level?
- 3 How much oil does a 40 hp Mercury outboard take?
- 4 What to do when you lose oil in a Mercury outboard?
- 5 What kind of oil does a Mercury 4 stroke engine use?
- 6 How do you change gear oil in a MerCruiser?
How do you fill the lower unit oil on a Mercury outboard?
Refilling Mercury 40HP 2-Stroke Lower Unit With Oil
- Attach a quart pump to a quart bottle of marine lower unit gear lube.
- Pump gear lube into the lower unit until it begins to flow from the vent screw hole.
- Disconnect the quart pump from the lower unit, then reinstall the drain/fill screw and washer.
How do I check my lower unit oil level?
Lower Units Used as Inboard/Outboard Drives Wipe the oil from the dipstick with a clean, lint-free rag and screw it back into the oil filler. Unscrew the dipstick from the oil filler and note the gear oil level. The oil level should be at or near the center of the dipstick, and above the lower mark on the dipstick.
How much oil does a 40 hp Mercury outboard take?
Remove the filler cap from the back of the powerhead, then fill the outboard with 3 quarts of Mercury 4-stroke marine engine oil and replace the filler cap.
Does a 2 stroke outboard have crankcase oil?
Being two-stroke engines, they have no crankcase oil to change, and have fewer moving parts than four-strokes; that means fewer parts that need maintenance, and fewer parts to fail.
How do you change oil on a Mercury 40hp?
NOTE: The steps to change the oil on a Mercury 40HP are the same or similar for most makes and models of small-to-medium sized outboards. Step 1. Remove the top cowling, then tilt the motor up as far as it’ll go and turn it so the drain bolt is facing downward. Step 2.
What to do when you lose oil in a Mercury outboard?
Even though there is a slight vacuum there will be some loss of oil. Tighten both the lower and upper drain plugs and wipe off any oil that may have fallen on to your lower unit. A marine specific lower unit gear lubricant should only be utilized in a Mercury outboard.
What kind of oil does a Mercury 4 stroke engine use?
Mercury Marine 75/90/115 hp 4-Stroke EFI Oil Change Kit Mercury oil change kits contain industry-leading Mercury 25W-40 Marine Engine Oil. Over five years of engineering and development went into…
How do you change gear oil in a MerCruiser?
Take your outboard to a qualified marine mechanic. Insert nozzle of a tube of AMSOIL Synthetic Marine Gear Lubricant, Mercury’s proprietary gear oil into the lower unit drain hole. Squeeze the lubricant up into into the lower unit, from the bottom of the tube. You may need more than one tube of gear oil.