Outboard 101

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

gearcase service outboard, lower unit service, outboard lower unit maintenance
Complete Lower Unit Service: What's Included and When You Need It
A complete lower unit service goes beyond a simple gear oil change. It includes inspection, seal replacement, and verification that all components are operating correctly. This preventive maintenance catches problems...
SeaSierra Team | February 13, 2026

Outboard 101

Your cart

Parts on Sale...

Shop

About

Choose options

Welcome Aboard!

Outboard 101

Complete Lower Unit Service: What's Included and When You Need It