Briggs & Stratton 90000 Power Built 475 Serie Manual Del Operario página 8

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How To Change The Oil - Figure 7
Used oil is a hazardous waste product and must be disposed of properly. Do not discard
with household waste. Check with your local authorities, service center, or dealer for safe
disposal/recycling facilities.
Remove Oil
1. With engine off but still warm, disconnect the spark plug wire (A) and keep it away
from the spark plug (Figure 7).
2. Remove the oil drain plug (B, Figure 8). Drain the oil into an approved receptacle.
Note: Any of the oil drain plugs (C) shown may be installed in the engine.
3. After the oil has drained, install and tighten the oil drain plug.
Add oil
Place engine level.
Clean the oil fill area of any debris.
See the Specifications section for oil capacity.
1. Remove the oil fill cap (D, Figure 8).
2. Pour the oil slowly into the engine oil fill (E). Fill to point of overflowing.
3. Replace and tighten the oil fill cap.
How To Service The Air Filter - Figure 9
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Never start or run the engine with the air cleaner assembly (if equipped) or the
air filter (if equipped) removed.
NOTICE: Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.
The air cleaner system uses a pleated filter with an optional pre-cleaner. The pre-cleaner
can be washed and reused.
1. Push in the locking tabs (A) and pull off the cover (B). See Figure 9.
2. Remove the filter (D). See Figure 10.
3. To loosen debris, gently tap the filter on a hard surface. If the filter is excessively
dirty, replace with a new filter.
4. Push the end of the filter into the base as shown. Make sure filter fits securely in the
base.
5. Install the cover. Make sure both locking tabs are secure.
How To Change The Gear Reduction Oil - Figure 11
If your engine is equipped with a gear reduction unit, service as follows.
1. Remove the oil fill plug (B) and the oil level plug (C).
2. Remove the oil drain plug (A, Figure 11) and drain the oil into an appropriate
receptacle.
3. Install and tighten the oil drain plug.
4. To refill, slowly pour gear lube into the oil fill hole (see Specifications section).
Continue to pour until the oil runs out of the oil level hole.
5. Install and tighten the oil level plug.
6. Install and tighten the oil fill plug.
Important: The oil fill plug has a vent hole (D) and must be installed on the top of the
gear case cover as shown.
How To Clean The Air Cooling System - Figure 12
WARNING
Running engines produce heat. Engine parts, especially muffler,
become extremely hot.
Severe thermal burns can occur on contact.
Combustible debris, such as leaves, grass, brush, etc. can catch fire.
Allow muffler, engine cylinder and fins to cool before touching.
Remove accumulated debris from muffler area and cylinder area.
NOTICE: Do not use water to clean the engine. Water could contaminate the fuel
system. Use a brush or dry cloth to clean the engine.
This is an air cooled engine. Dirt or debris can restrict air flow and cause the engine to
overheat, resulting in poor performance and reduced engine life.
Use a brush or dry cloth to remove debris from the finger guard (A) (Figure 12). Keep
linkage, springs and controls (B) clean. Keep the area around and behind the muffler (C)
free of any combustible debris.
8
8
10
Storage
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
When Storing Fuel Or Equipment With Fuel In Tank
Store away from furnaces, stoves, water heaters or other appliances that have
pilot lights or other ignition sources because they can ignite fuel vapors.
Fuel System
Fuel can become stale when stored over 30 days. Stale fuel causes acid and gum
deposits to form in the fuel system or on essential carburetor parts. To keep fuel fresh,
use Briggs & Stratton FRESH START
drip concentrate cartridge.
There is no need to drain gasoline from the engine if a fuel stabilizer is added according
to instructions. Run the engine for 2 minutes to circulate the stabilizer throughout the fuel
system. The engine and fuel can then be stored up to 24 months.
If gasoline in the engine has not been treated with a fuel stabilizer, it must be drained into
an approved container. Run the engine until it stops from lack of fuel. The use of a fuel
stabilizer in the storage container is recommended to maintain freshness.
Engine Oil
While the engine is still warm, change the engine oil.
Troubleshooting
Need Assistance? Go to BRIGGSandSTRATTON.COM or call 1-800-233-3723.
Specifications
Engine Specifications
Model
Displacement
Bore
Stroke
Oil Capacity
Gear Reduction Oil
Tune-up Specifications *
Model
Spark Plug Gap
Spark Plug Torque
Armature Air Gap
Intake Valve Clearance
Exhaust Valve Clearance
* Engine power will decrease 3.5% for each 1,000 feet (300 meters) above sea level and
1% for each 10° F (5.6° C) above 77° F (25° C). The engine will operate satisfactorily at
an angle up to 15°. Refer to the equipment operator's manual for safe allowable
operating limits on slopes.
Common Service Parts n
Service Part
Oval Air Filter
Fuel Additive
Resistor Spark Plug
Long Life Platinum Spark Plug
Spark Plug Wrench
Spark Tester
n We recommend that you see any Briggs & Stratton Authorized Dealer for all
maintenance and service of the engine and engine parts. Use only genuine Briggs &
Stratton parts.
®
fuel stabilizer, available as a liquid additive or a
90000
9.02 ci (148 cc)
2.562 in (65.08 mm)
1.750 in (44.45 mm)
18 -- 20 oz (0.54 -- 0.59 L)
80W-90
90000
0.030 in (0.76 mm)
180 lb-in (20 Nm)
0.006 - 0.010 in (0.15 - 0.25 mm)
0.005 - 0.007 in (0.13 - 0.18 mm)
0.007 - 0.009 in (0.18 - 0.23 mm)
Part Number
790166
5041, 5058
802592
5062
89838, 5023
19368
BRIGGSandSTRATTON.COM
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