Honda 99 Outboard Owners Manual

SERVICING YOUR HONDA OUTBOARD MOTOR 
If no oil flows from the oil level hole, add 
the recommended oil following the 
procedure described in Gear Oil Change. Gear Oil Change 
Change the gear oil with the engine 
stopped and the outboard motor in the 
vertical position. 
Place suitable container below the oil 
drain hole to catch the used oil, then 
remove the oil level plug, and oil 
drain plug. 
Remove any metal particles from the 
magnetic end of the oil drain plug. 3. Allow the used oil to drain...

SERVICING YOUR HONDA OUTBOARD MOTOR 
GEAR OIL BOTTLE 
4. Add oil through the oil drain hole 
until it flows out the oil lcvcl hole, 
then install the oil level plug and 
the oil drain plug. 
GEAR OIL CAPACITY: 
0.301 US qt (2X5 cm3) 
Outboard motor SAE 00 hypoid 
gear oil API Service classification 
(GL-4 or GL-5). OIL LEVEL PLUG & VENT PLUG 
TORQUE: 
2.5 R-lb (3.5 N-m, 0.35 kg-m) 
Avoid losing more than I fl oz (30~~) 
while reinstalling the drain plug. 
OIL DRAIN PLUG TORQUE: 
2.5 ft-lb (3.5 N-m, 0.35...

SERVICING YOUR HONDA OUTBOARD MOTOR 
TILLER HANDLE THROTTLE REEL TILT STOPPER 
Lubrication Points  
Wipe the outside of the engine with a cloth dipped in oil. > 
Apply marine anticorrosion grease to the following parts: 
lubrication, then every 20 hours or a month after the date of 
purchase for initial 100 hours or 6 months. 
---I I I- u INOT’CEI 
Apply anticorrosion oil to pivot surfaces whrere grease 
cannot penetrate. SWlVEL CASE 
PROPELLER SHAFT 
Apply Honda Marine Corrosion Inhibitor (or...

SERVICING YOUR HONDA OUTBOARD MOTOR 
Spark Plug Service 
RECOMMENDED SPARK PLUGS: 
CRSEH-9 (NGK) 
U I6FER9 (DENSO) 
t 1 Incorrect spark plugs can cause engine 
damage. 
Unlatch and remove the engine cover 
(P.55). 
Disconnect the spark plug caps from 
the spark plugs. 
Remove the spark plugs with a spark 
plug wrench and screwdriver 
supplied in the tool kit. 4. Inspect the spark plugs. Replace 
them if the electrodes are worn, or if 
the insulators arc cracked or chipped. 
Clean the spark plugs with a...

SERVICING YOUR HONDA OUTBOARD MOTOR 
6. Install the spark plugs carefully, by 
hand, to avoid cross-threading. 7. 
8. 
9. After each spark plug seats, tighten 
with a spark plug wrench supplied in 
the tool kit to compress the sealing 
washer. 
If reinstalling the used spark plugs, 
tighten l/8 - l/4 turn after the spark 
plugs seat. 
If reinstalling new spark plugs, 
tighten l/2 turn after the spark plugs 
seat. 
Loose spark plugs can over heat and 
damage the engine. Overtightening 
the spark plugs can...

SERVICING YOUR HONDA OUTBOARD MOTOR 
REFUELING 
Portable Fuel Tank 
(optional equipment) 
FUEL TANK CAPACITY: 
3.2 US gal ( 12.0 t ) 
Check the fuel gauge and refill the tank 
when necessary. 
Remove the fuel tank from the boat for 
refueling. 
OPEN 
To refuel, turn the vent knob 
counterclockwise to the OPEN position, 
and unscrew the fuel tank cap 
FUELGAUGE 
Refuel in a well-ventilated area. Fill the 
tank to the SAFE FILL LEVEL lint. 
After refueling, install the cap and tighten 
it securely. Turn...

SERVICING YOUR HONDA OUTBOARD MOTOR 
FUEL RECOMMENDATIONS 
Use unleaded gasoline with a pump 
octane rating of 86 or higher. 
These outboard motors are certified to 
operate on unleaded gasoline. Unleaded 
gasoline produces fewer engine and spark 
plug deposits and extends exhaust system 
life. 
Never use stale or contaminated gasoline 
or an oil/gasoline mixture. Avoid getting 
dirt or water in the fuel tank. 
Occasionally you may hear a light “spark 
knock” or “pinging” (metallic rapping 
noise) while...

SERVICING YOUR HONDA OUTBOARID MOTOR 
ENGINE COVEk LATCii ’ 
I Unlatch and remove the engine cover 
for access to the fuel pump filter. 
FUEL FILTER 
2. Inspect the filter for water and/or 
sediment accumulation. 
If the filter is OK, reinstall it. If 
water and/or sediment are prcscnt, 
replace the filter as dcscribcd in the 
following steps. Always replace the 
filter at the scheduled replacement 
interval (p.54). 3. Disconnect the fuel hose from the 
outboard motor, and place clamps on 
the fuel hoses...

SERVICING YOUR HONDA OUTBOARD MOTOR 
. . ARROW 
(Fuel Flow Direction) 
Install the new filter on the fuel 
hoses, with the fuel flow arrow 
pointing toward the fuel pump as 
shown. Fuel flow will be impeded if 
the filter is installed backward. 
Remove the fuel tube clamps, and 
connect the fuel hose to the outboard 
motor. Check for leaks. 
Install and lock the engine cover. 
Portable Fuel Tank and Filter 
Cleaning 
Fuel Tank 
Empty the portable fuel tank into an 
approved gasoline container. Use a...

SERVICING YOUR HONDA OUTBOARD MOTOR - 
Recoil Starter Rope Inspection 
 
RECOIL STARTER ROPE 
Inspect the recoil starter rope, and replace 
it if it becomes frayed. 
Always keep the emergency starter rope 
on the boat in cast the recoil starter rope 
fails. Anoed Replacement 
The anodes are located on each side of the 
gearcase. They are made of a sacrificial 
material that helps to protect the outboard 
motor from corrosion. 
Replace the anodes when they have been 
reduced to about half their original...