Briggs & Stratton 04500 Manual De Operador página 7

WARNING
• Before performing any maintenance on the
engine disconnect the spark plug wire from the
spark plug to prevent unintentional sparking.
• Unintentional sparking can result in fire or electric
shock.
• Unintentional start-up can result in entangle-
ment, traumatic amputation or laceration.
• Use only correct tools.
• Do not tamper with engine speed.
Follow the hourly or calendar intervals, whichever occur first.
More frequent service is required when operating in adverse
conditions noted.
First 5 − 8 hours
D Change oil.*
Every 8 hours or daily
D Check oil level.
D Check fuel system.
D Check linkages and throttle for freedom of move-
ment.
D Check outboard installation, and operation of pro-
peller, steering handle, and starter.
Every 25 hours or every season
D Change oil.*
D Check gear case oil of lower unit.
Every 50 hours or every season
D Change gear case oil of lower unit.
D Replace spark plug.**
D Replace fuel filter.
Every 100 hours or every season
D Check valve clearance.
D Clean combustion chamber deposits.
*
Change oil more frequently when operating the
engine under heavy load or in high temperatures.
**
In some areas, local law requires using a resistor
spark plug to suppress ignition signals. If this engine
was originally equipped with resistor spark plug, use
same type of spark plug for replacement.
CHANGING ENGINE OIL
Fig. 8
WARNING
• DO NOT grab the muffler or muffler guard when removing
the outboard from the boat.
CAUTION: Outboard MUST be in the vertical position
when checking and changing the oil.
1. With engine OFF but still warm, remove the oil drain plug
Ê
. Drain the old oil from the engine into an approved
container.
2. After all the oil has drained out of the engine, install the
oil drain plug. Tighten the plug.
3. Remove the dip stick/oil filler cap.
4. Refill engine with approx. 24 oz. of oil
DO NOT overfill.
5. Check the oil level. Insert the dipstick into the oil fill tube
and screw in. Remove dipstick and check oil level on the
dipstick. Oil should be at the FULL mark
necessary.
CHANGING GEAR CASE OIL
Fig. 9
1. Place the outboard in vertical position.
2. Remove vent plug
3. Drain the gear oil. Allow the oil to drain for a minimum of
15 minutes.
4. Insert the nozzle of the new gear oil bottle
fill hole. Fill gear case with gear oil.
CAUTION: It is necessary to purge ALL the air from the
gear case when replacing or adding gear oil. Slowly
squeeze the bottle until a steady stream of gear oil runs
from the vent hole
5. Install the vent plug while continuing to supply oil to the
gear case. Install gear oil fill plug.
Note: If the gear case oil appears milky, indicating wa-
ter in the oil; or if the oil has indications of high
wear, such as steel particles in the oil, contact an
Authorized Briggs & Stratton Dealer.
FUEL SYSTEM
WARNING
• Replacement parts for fuel system (tank, hoses, valves,
etc.) must be the same quality as original parts, otherwise
fire can occur.
Replacing Fuel Filter
Remove the engine cover. Replace fuel filter. Check filter for
water or debris. If found, clean fuel system. Reinstall the
engine cover.
SPARK PLUG
• The electrodes on the spark plug must be clean and
sharp to produce the powerful spark required for ignition.
If the spark plug is worn or dirty the engine will be hard to
start.
• Ensure spark plug gap is 0.51 mm or 0.020 in.
VALVE CLEARANCE
Measure valve clearance with valve springs installed and
piston 6 mm (0.25 in.) past top dead center. Check when
engine is cold. See Briggs & Stratton repair manual, Part No.
275110.
COMBUSTION DEPOSITS
After 100 hours of operation the combustion deposits should
be removed from the cylinder, cylinder head, top of piston and
around valves.
CLEANING OUTBOARD
Engine and parts should be kept clean to maintain freedom of
movement, and to reduce the risk of overheating from
accumulated debris.
CAUTION: DO NOT use water to clean engine parts.
Water could contaminate fuel system. Use a brush or
dry cloth.
Ë
.
Ì
. Add oil if
Ë
Ê
and gear oil drain/fill plug .
Ì
into the oil
Í
.
5
ADJUSTMENTS
THROTTLE ADJUSTMENT
Fig. 10
1. With engine off, and throttle control in the IDLE position,
Ê
loosen casing clamp screw at the back of the engine.
2. Push the throttle cable in direction of arrow toward the
control bracket. moving the throttle bracket
against the idle speed screw.
3. Secure the casing clamp screw. Rotate throttle control
hand grip observing motion in the bracket while turning
from IDLE to HIGH Speed. There should be freedom in
motion.
CARBURETOR ADJUSTMENT
Fig. 11
WARNING
• Outboard must be in NEUTRAL to adjust idle.
• Keep hands and feet from rotating parts.
WARNING
• The outboard uses a factory installed electronic
engine speed limiter to control engine speed. Do not
attempt to alter the electronic engine speed limiter
or change the top speed setting.
1. Using a tachometer (B&S P/N 19389) adjust the idle
RPM with the outboard in NEUTRAL.
2. Rotate throttle control counter-clockwise and hold so
throttle bracket is firmly against idle speed screw. While
holding, adjust speed screw to obtain 1900 RPM-No
Load (1400 RPM Full Load).
3. Rotate the throttle control to HIGH speed. Engine
should accelerate smoothly. If not see an Authorized
Briggs & Stratton Service Dealer.
Note: For high altitude operation, above 900 meters or
3000 feet, consult your Authorized Briggs &
Stratton Dealer.
TRANSPORTING
TRAILERING THE OUTBOARD
Fig. 12
CAUTION
Before transporting, ensure the outboard is secure. DO
NOT transport with the outboard tilted up! Trailering the
outboard unsecured or in a tilted position will damage the
boat and/or outboard. If attached to the transom, secure
to prevent bounce, tilt or the possibility of falling off.
• When transporting outboard, while still attached to boat,
secure it in the vertical position. If not possible remove
the outboard and secure it in the proper horizontal
position.
• Use a trailer with adequate clearance
Ê
damage to the outboard from curbs, pavement or
other objects.
• It is the OWNER/OPERATOR'S responsibility to secure
the outboard. If attached to the transom when
transporting, secure to prevent bounce, tilt or the
possibility of falling off.
Ë
firmly
Ë
to prevent