How to Replace Outboard Lower Unit Seals
Lower unit seals keep water out and gear oil in. When they fail, water enters the gearcase, contaminates the oil, and destroys bearings and gears. A $30 seal kit prevents...
SeaSierra Team |
- All
- 2 stroke smoke normal
- 2 stroke vs 4 stroke oil
- 4 stroke outboard oil
- add hydraulic fluid outboard
- adjust idle outboard
- aftermarket marine parts
- air in fuel line outboard
- anode wear signs
- bad compression reading
- bad fuel pump symptoms
- balance outboard propeller
- beeping outboard motor
- bent prop fix
- best outboard brand
- bleed fuel system outboard
- blue smoke outboard
- boat battery selection
- boat inspection checklist
- boat motor vibration
- boat steering systems
- can't reach full throttle
- carb issues outboard
- carbureted outboard
- carburetor cleaner outboard
- carburetor idle screw
- carburetor rebuild kit outboard
- carburetor rebuild outboard
- carburetor vs fuel injection outboard
- cavitation vs ventilation
- CDI module explained
- CDI module outboard
- change fuel filter outboard
- change oil outboard motor
- change outboard prop
- charging system failure
- check compression outboard
- check engine light outboard
- choke not working
- choke stuck outboard
- choosing outboard propeller
- clean carburetor without removing
- clear tell-tale blockage
- clogged tell-tale
- compression loss causes
- compression readings outboard
- corroded anode outboard
- corrosion damage signs
- damaged propeller outboard
- de-winterize outboard
- deep cycle vs starting battery
- diagnose overheating outboard
- DIY outboard repair
- E10 fuel boat
- EFI outboard
- electrolysis boat
- electronic ignition outboard
- emergency cut off switch
- engine cut off switch
- engine fogging storage
- ethanol damage outboard
- ethanol fuel outboard
- excessive oil use
- first start after winter
- flush outboard saltwater
- fog outboard engine
- fogging oil outboard
- fuel delivery issues outboard
- fuel primer problems
- fuel pump replacement outboard
- fuel stabilizer outboard
- galvanic corrosion boat
- gear oil change outboard
- gearcase leak diagnosis
- gearcase service outboard
- genuine vs aftermarket
- high temp warning outboard
- Honda marine engine care
- Honda outboard maintenance
- Honda outboard tips
- how outboard cooling works
- hydraulic vs cable steering
- ignition coil outboard
- ignition failure diagnosis
- impeller
- impeller kit contents
- inline fuel filter boat
- inspect outboard corrosion
- install fuel filter boat
- install kill switch
- install propeller outboard
- Johnson Evinrude parts availability
- Johnson outboard parts
- kill lanyard
- kill lanyard installation
- kill switch preventing start
- kill switch troubleshooting
- long term outboard storage
- loses power under load
- low compression outboard
- lower unit oil change
- lower unit seal replacement
- lower unit service
- lower unit water intrusion
- lubricate steering outboard
- Maintenance tips
- marine battery types
- marine engine oil
- marine fuel filter
- marine fuel filter installation
- marine fuel hose
- marine spark plugs
- Mercury outboard maintenance
- Mercury outboard service intervals
- Mercury service schedule
- milky gear oil outboard
- monthly boat maintenance
- motor mounting position
- no charge outboard
- no pee stream outboard
- no water tell-tale
- normal rpm outboard
- OEM vs aftermarket outboard
- oil consumption outboard
- oil injection system outboard
- OMC parts
- optimal trim position
- outboard alarm meaning
- outboard alternator test
- outboard anode replacement
- outboard battery not charging
- outboard bogs down
- outboard burning oil
- outboard cable tuning
- outboard carb rebuild
- outboard carburetor adjustment
- outboard carburetor problems
- outboard care schedule
- outboard charging system test
- outboard choke problems
- outboard compression test
- outboard control cables
- outboard cooling system
- outboard corrosion check
- outboard corrosion prevention
- outboard cranks slowly
- outboard diagnostic codes
- outboard dies at idle
- outboard ECU
- outboard error codes
- outboard exhaust smoke
- outboard first run spring
- outboard flushing
- outboard fuel filter replacement
- outboard fuel line replacement
- outboard fuel problems
- outboard fuel pump test
- outboard fuel system troubleshooting
- outboard gear lube
- outboard gear shift fix
- outboard gearcase seals
- outboard hard to shift
- outboard hesitation
- outboard idle stall
- outboard idles rough
- outboard ignition system
- outboard impeller replacement
- outboard inspection
- outboard kill switch
- outboard low rpm
- outboard lower unit leak
- outboard lower unit maintenance
- outboard maintenance checklist
- outboard mounting height
- outboard no spark
- outboard no start troubleshooting
- outboard oil change
- outboard oil injection
- outboard oil type
- outboard overheating
- outboard overheating causes
- outboard pre-season check
- outboard rebuild signs
- outboard repair yourself
- outboard rpm drop
- outboard rpm range
- outboard running hot
- outboard shaking
- outboard shift linkage replacement
- outboard smoking startup
- outboard spark plug replacement
- outboard spring commissioning
- outboard stalls at idle
- outboard starter replacement
- outboard starting problems
- outboard steering hard
- outboard storage
- outboard tach problems
- outboard thermostat replacement
- outboard thermostat symptoms
- outboard trim angle
- outboard trim not working
- outboard vibration causes
- outboard winter storage
- outboard winterization
- outboard won't start
- outboard won't trim up
- overheat alarm outboard
- overheating alarm
- pee hole fitting
- powerhead rebuild
- prevent corrosion boat
- prime outboard fuel system
- primer bulb not working
- prop balance
- prop cavitation
- prop diameter selection
- propeller damage repair
- propeller pitch explained
- propeller ventilation
- propeller vibration fix
- pump housing outboard
- raw water cooling outboard
- read spark plugs outboard
- rebuild outboard carburetor
- remove outboard propeller
- remove water from fuel
- replace fuel line boat
- replace impeller outboard
- replace lower unit seals
- replace starter outboard
- replace thermostat outboard
- rough idle outboard
- rpm gauge not reading
- sacrificial anode boat
- safety lanyard problem
- saltwater corrosion outboard
- saltwater outboard care
- scored pump housing
- sea foam carburetor
- shift cable adjustment
- shift cable outboard
- shift linkage repair
- shift problems outboard
- soft primer bulb outboard
- spark plug color meaning
- spark plug diagnosis
- spark plug gap outboard
- spark test outboard
- spring boat maintenance
- sta-bil marine
- stabilize fuel boat
- starter clicking outboard
- starter motor outboard
- starter solenoid problems
- starting outboard after storage
- stator ohm test
- stator testing outboard
- steering cable grease
- steering maintenance
- steering problems outboard
- steering upgrade
- stiff steering boat
- store outboard motor
- stray current corrosion
- Suzuki outboard issues
- Suzuki outboard problems
- Suzuki outboard troubleshooting
- tachometer not working
- tell-tale fitting replacement
- tell-tale maintenance
- tell-tale not working
- tell-tale outlet
- test outboard stator
- throttle cable adjustment
- throttle cable replacement
- tilt motor troubleshooting
- transom height outboard
- trigger coil testing
- trim motor stuck
- trim reservoir refill
- trim setting outboard
- trim stuck down
- trim tilt fluid
- trim tilt problems
- two stroke exhaust
- unstable idle outboard
- VRO pump problems
- warning alarm outboard
- water in fuel outboard
- water in gas tank boat
- water in lower unit
- water pump body replacement
- water pump failure symptoms
- water pump housing damage
- water pump housing replacement
- water pump impeller
- water pump kit vs impeller
- water pump rebuild kit
- water pump warning signs
- water tube alignment
- water tube installation
- water tube seal
- when to call marine mechanic
- when to rebuild outboard
- when to replace anodes
- white smoke outboard
- winterize outboard motor
- won't go into gear
- worn pump housing
- WOT rpm outboard
- Yamaha Mercury comparison
- Yamaha outboard maintenance schedule
- Yamaha outboard service
- Yamaha service intervals
- Yamaha vs Mercury outboard
- zinc anode outboard
- All
- 2 stroke smoke normal
- 2 stroke vs 4 stroke oil
- 4 stroke outboard oil
- add hydraulic fluid outboard
- adjust idle outboard
- aftermarket marine parts
- air in fuel line outboard
- anode wear signs
- bad compression reading
- bad fuel pump symptoms
- balance outboard propeller
- beeping outboard motor
- bent prop fix
- best outboard brand
- bleed fuel system outboard
- blue smoke outboard
- boat battery selection
- boat inspection checklist
- boat motor vibration
- boat steering systems
- can't reach full throttle
- carb issues outboard
- carbureted outboard
- carburetor cleaner outboard
- carburetor idle screw
- carburetor rebuild kit outboard
- carburetor rebuild outboard
- carburetor vs fuel injection outboard
- cavitation vs ventilation
- CDI module explained
- CDI module outboard
- change fuel filter outboard
- change oil outboard motor
- change outboard prop
- charging system failure
- check compression outboard
- check engine light outboard
- choke not working
- choke stuck outboard
- choosing outboard propeller
- clean carburetor without removing
- clear tell-tale blockage
- clogged tell-tale
- compression loss causes
- compression readings outboard
- corroded anode outboard
- corrosion damage signs
- damaged propeller outboard
- de-winterize outboard
- deep cycle vs starting battery
- diagnose overheating outboard
- DIY outboard repair
- E10 fuel boat
- EFI outboard
- electrolysis boat
- electronic ignition outboard
- emergency cut off switch
- engine cut off switch
- engine fogging storage
- ethanol damage outboard
- ethanol fuel outboard
- excessive oil use
- first start after winter
- flush outboard saltwater
- fog outboard engine
- fogging oil outboard
- fuel delivery issues outboard
- fuel primer problems
- fuel pump replacement outboard
- fuel stabilizer outboard
- galvanic corrosion boat
- gear oil change outboard
- gearcase leak diagnosis
- gearcase service outboard
- genuine vs aftermarket
- high temp warning outboard
- Honda marine engine care
- Honda outboard maintenance
- Honda outboard tips
- how outboard cooling works
- hydraulic vs cable steering
- ignition coil outboard
- ignition failure diagnosis
- impeller
- impeller kit contents
- inline fuel filter boat
- inspect outboard corrosion
- install fuel filter boat
- install kill switch
- install propeller outboard
- Johnson Evinrude parts availability
- Johnson outboard parts
- kill lanyard
- kill lanyard installation
- kill switch preventing start
- kill switch troubleshooting
- long term outboard storage
- loses power under load
- low compression outboard
- lower unit oil change
- lower unit seal replacement
- lower unit service
- lower unit water intrusion
- lubricate steering outboard
- Maintenance tips
- marine battery types
- marine engine oil
- marine fuel filter
- marine fuel filter installation
- marine fuel hose
- marine spark plugs
- Mercury outboard maintenance
- Mercury outboard service intervals
- Mercury service schedule
- milky gear oil outboard
- monthly boat maintenance
- motor mounting position
- no charge outboard
- no pee stream outboard
- no water tell-tale
- normal rpm outboard
- OEM vs aftermarket outboard
- oil consumption outboard
- oil injection system outboard
- OMC parts
- optimal trim position
- outboard alarm meaning
- outboard alternator test
- outboard anode replacement
- outboard battery not charging
- outboard bogs down
- outboard burning oil
- outboard cable tuning
- outboard carb rebuild
- outboard carburetor adjustment
- outboard carburetor problems
- outboard care schedule
- outboard charging system test
- outboard choke problems
- outboard compression test
- outboard control cables
- outboard cooling system
- outboard corrosion check
- outboard corrosion prevention
- outboard cranks slowly
- outboard diagnostic codes
- outboard dies at idle
- outboard ECU
- outboard error codes
- outboard exhaust smoke
- outboard first run spring
- outboard flushing
- outboard fuel filter replacement
- outboard fuel line replacement
- outboard fuel problems
- outboard fuel pump test
- outboard fuel system troubleshooting
- outboard gear lube
- outboard gear shift fix
- outboard gearcase seals
- outboard hard to shift
- outboard hesitation
- outboard idle stall
- outboard idles rough
- outboard ignition system
- outboard impeller replacement
- outboard inspection
- outboard kill switch
- outboard low rpm
- outboard lower unit leak
- outboard lower unit maintenance
- outboard maintenance checklist
- outboard mounting height
- outboard no spark
- outboard no start troubleshooting
- outboard oil change
- outboard oil injection
- outboard oil type
- outboard overheating
- outboard overheating causes
- outboard pre-season check
- outboard rebuild signs
- outboard repair yourself
- outboard rpm drop
- outboard rpm range
- outboard running hot
- outboard shaking
- outboard shift linkage replacement
- outboard smoking startup
- outboard spark plug replacement
- outboard spring commissioning
- outboard stalls at idle
- outboard starter replacement
- outboard starting problems
- outboard steering hard
- outboard storage
- outboard tach problems
- outboard thermostat replacement
- outboard thermostat symptoms
- outboard trim angle
- outboard trim not working
- outboard vibration causes
- outboard winter storage
- outboard winterization
- outboard won't start
- outboard won't trim up
- overheat alarm outboard
- overheating alarm
- pee hole fitting
- powerhead rebuild
- prevent corrosion boat
- prime outboard fuel system
- primer bulb not working
- prop balance
- prop cavitation
- prop diameter selection
- propeller damage repair
- propeller pitch explained
- propeller ventilation
- propeller vibration fix
- pump housing outboard
- raw water cooling outboard
- read spark plugs outboard
- rebuild outboard carburetor
- remove outboard propeller
- remove water from fuel
- replace fuel line boat
- replace impeller outboard
- replace lower unit seals
- replace starter outboard
- replace thermostat outboard
- rough idle outboard
- rpm gauge not reading
- sacrificial anode boat
- safety lanyard problem
- saltwater corrosion outboard
- saltwater outboard care
- scored pump housing
- sea foam carburetor
- shift cable adjustment
- shift cable outboard
- shift linkage repair
- shift problems outboard
- soft primer bulb outboard
- spark plug color meaning
- spark plug diagnosis
- spark plug gap outboard
- spark test outboard
- spring boat maintenance
- sta-bil marine
- stabilize fuel boat
- starter clicking outboard
- starter motor outboard
- starter solenoid problems
- starting outboard after storage
- stator ohm test
- stator testing outboard
- steering cable grease
- steering maintenance
- steering problems outboard
- steering upgrade
- stiff steering boat
- store outboard motor
- stray current corrosion
- Suzuki outboard issues
- Suzuki outboard problems
- Suzuki outboard troubleshooting
- tachometer not working
- tell-tale fitting replacement
- tell-tale maintenance
- tell-tale not working
- tell-tale outlet
- test outboard stator
- throttle cable adjustment
- throttle cable replacement
- tilt motor troubleshooting
- transom height outboard
- trigger coil testing
- trim motor stuck
- trim reservoir refill
- trim setting outboard
- trim stuck down
- trim tilt fluid
- trim tilt problems
- two stroke exhaust
- unstable idle outboard
- VRO pump problems
- warning alarm outboard
- water in fuel outboard
- water in gas tank boat
- water in lower unit
- water pump body replacement
- water pump failure symptoms
- water pump housing damage
- water pump housing replacement
- water pump impeller
- water pump kit vs impeller
- water pump rebuild kit
- water pump warning signs
- water tube alignment
- water tube installation
- water tube seal
- when to call marine mechanic
- when to rebuild outboard
- when to replace anodes
- white smoke outboard
- winterize outboard motor
- won't go into gear
- worn pump housing
- WOT rpm outboard
- Yamaha Mercury comparison
- Yamaha outboard maintenance schedule
- Yamaha outboard service
- Yamaha service intervals
- Yamaha vs Mercury outboard
- zinc anode outboard
