How do you check oil level in lower unit?
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 often should you change your lower unit oil?
every 100 hours
Most sterndrive and outboard manufacturers advise you to change the gearcase oil in your lower unit every 100 hours or once a year (whichever comes first). Clean oil is critical for protecting the heavily loaded gears in your lower unit and preventing expensive damage.
How long does it take to change oil in a Mercury outboard?
Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Allow all of the oil to drain completely from the lower unit. This process can easily take between 5-10 minutes.
How to check for gear oil leaks on a Mercury outboard?
Inspect the lower unit for gear oil leaks before you reinstall it. When installing the lower unit, turn the propeller in the direction in which it normally rotates to align the crankshaft-to-drive-shaft splines. Inspect the lower unit for gear oil leaks before you reinstall it.
How long does it take to drain oil from Mercury?
Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Allow all of the oil to drain completely from the lower unit. This process can easily take between 5-10 minutes. Once all the oil has been completely drained, the lower unit will have to be re-filled.
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.
How do you change oil in a Mercury Motor?
Allow all of the oil to drain completely from the lower unit. Once all the oil has been completely drained, the lower unit will have to be re-filled. To refill the lower unit, insert the bottle or tube into the bottom drain hole and slowly squeeze the bottle to force the oil into the lower unit.
Now remove the top drain plug; this will release the vacuum that exists and allow the oil to drain freely from the Mercury lower unit. Allow all of the oil to drain completely from the lower unit. This process can easily take between 5-10 minutes. Once all the oil has been completely drained, the lower unit will have to be re-filled.
When to check oil level on outboard motor?
If oil does not leak from the vent plug when you remove the screw, the lower unit oil level is low. Ensure that the lower unit/out drive/stern drive is fully lowered. As with the outboard lower unit, the oil is best checked when the motor has been running recently, or is allowed to warm to its normal operating temperature.
How to check the lower unit oil in a boat?
The gear oil change gives you the chance to inspect the oil for evidence of internal damage. Ensure that the motor is vertical and is level from side to side, whether on your boat or a motor stand. If the motor has not been run within 30 minutes, connect a garden hose to the motor’s flushing connection or to a motor flushing attachment.