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NOTICE: Do not use pressurized air or solvents to clean the filter. Pressurized air can
damage the filter and solvents will dissolve the filter.
See the Maintenance Chart for service requirements.
Low-Profile Air Filter System
1. Remove the knob (F) and the cover (G). See Figure 8.
2. Remove the nut (H) and the retainer (J).
3. Remove the air filter (K).
4. Remove the pre-cleaner (L), if equipped, from the air filter.
5. To loosen debris, gently tap the air filter on a hard surface. If the air filter is
excessively dirty, replace with a new air filter.
6. Wash the pre-cleaner in liquid detergent and water. Then allow it to thoroughly air
dry. Do not oil the pre-cleaner.
7. Assemble the dry pre-cleaner to the air filter.
8. Install the air filter and secure with retainer and nut.
9. Install the cover and secure with knob.
How To Clean The Air Cooling System - Figure 9
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 air intake grille (A, Figure 9). Keep
linkage, springs and controls (B) clean. Keep the area around and behind the muffler (C)
free of any combustible debris. Make sure that the oil cooler fins (D) are free of dirt and
debris.
How To Replace The Fuel Filter - Figure 10
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition
sources.
Check fuel lines, tank, cap, and fittings frequently for cracks or leaks.
Replace if necessary.
Before replacing the fuel filter, drain the fuel tank or close the fuel shut-off valve.
Replacement parts must be the same and installed in the same position as the
original parts.
If fuel spills, wait until it evaporates before starting engine.
1. Before replacing the fuel filter (A, Figure 10), if equipped, drain the fuel tank or close
the fuel shut-off valve. Otherwise, fuel can leak out and cause a fire or explosion.
2. Use pliers to squeeze tabs (B) on the clamps (C), then slide the clamps away from
the fuel filter. Twist and pull the fuel lines (D) off of the fuel filter.
3. Check the fuel lines for cracks or leaks. Replace if necessary.
4. Replace the fuel filter with an original equipment replacement filter.
5. Secure the fuel lines with the clamps as shown.
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,
en
use Briggs & Stratton Advanced Formula Fuel Treatment & Stabilizer, available
wherever Briggs & Stratton genuine service parts are sold.
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 before storage.
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 VanguardEngines.com or call 1-800-999-9333 (in USA).
Specifications
Engine Specifications
Model
Displacement
Bore
Stroke
Oil Capacity
Tune-up Specifications *
Model
Spark Plug Gap
Spark Plug Torque
Armature Air Gap-- Carburetor Models
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
Air Filter, Low-Profile
Pre-Cleaner, Low-Profile
Oil -- SAE 30
Oil Filter
Fuel Filter
Advanced Formula Fuel Treatment & Stabilizer
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.
613700, 61E900
60.60 ci (993 cc)
3.366 in (85.5 mm)
3.406 in (77.21 mm)
78 -- 80 oz (2.3 -- 2.4 L)
613700, 61E900
0.030 in (0.76 mm)
180 lb-in (20 Nm)
0.005 - 0.008 in (0.13 - 0.20 mm)
0.004 - 0.006 in (0.10 - 0.15 mm)
0.007 - 0.009 in (0.18 - 0.23 mm)
Part Number
692519
692520
100028
842921
845125
5442
491055
5066
19374
19368
9
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