Vanguard 12V000 Operator'S Manual Download Page 11

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6. Install and tighten the dipstick again.
7. Connect the spark plug wire(s) to the spark plug(s). Refer to the

Remove Oil

section.

Change Gear Reduction Oil

Some engines are equipped with a Gear Reduction Unit. If equipped, refer to the steps

for one of the Gear Reduction Units that follow.

2:1 Chain Reduction Unit

If the engine is installed with a 2:1 chain reduction unit (G, Figure 25), an oil change is

not necessary. The oil in the engine also lubricates the chain reduction unit.

2:1 Wet Clutch Reduction Unit

If the engine is equipped with a 2:1 wet clutch reduction unit, do the steps that follow:
1. Remove the dipstick (A, Figure 26).
2. Remove the drain plug (B, Figure 26), and drain the oil into an approved container.
3. Install and tighten the oil drain plug (B, Figure 26).
4. Slowly add oil into the oil fill (C, Figure 26). See

Specifications

section.

5. Install the dipstick (A, Figure 26).
6. Remove the dipstick (A, Figure 26) and check the oil level. The correct oil level is at

the top of the full indicator (D) on the dipstick.

7. Install the dipstick (A, Figure 26).

6:1 Gear Reduction Unit

If your engine is equipped with a 6:1 gear reduction unit, do the steps that follow:
1. Remove the oil fill plug (A, Figure 27) and the oil level plug (B).
2. Remove the oil drain plug (C, Figure 27) and drain the oil into an approved

container.

3. Install and tighten the oil drain plug (C, Figure 27).
4. Slowly add gear reduction oil (80W-90) into the oil fill hole (D, Figure 27). Continue

to add the gear reduction oil (80W-90) until the oil comes out of the oil level hole

(E).

5. Install and tighten the oil level plug (B, Figure 27).
6. Install and tighten the oil fill plug (A, Figure 27).

NOTE:

The oil fill plug (A, Figure 27) has a vent hole (F) and must be installed on the

top of the gear case cover as shown.

Servicing the Air Filter

WARNING

Fuel vapors are flammable and explosive. Fire or explosion could result in burns

or death.

•

Do not start and operate 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 could result in

damage to the filter and solvents will dissolve the filter.
See the

Maintenance Schedule

for servicing requirements.

Different models will use a foam or a paper filter. Some models could also have an

optional pre-cleaner that can be cleaned and used again. Compare the illustrations in

this manual with the type installed on your engine and service as follows.

Paper Air Filter

1. Loosen the fastener(s) (C, Figure 28).
2. Remove the cover (A, Figure 28) and the filter (B).
3. To loosen debris, lightly tap the filter (B, Figure 28) on a hard surface. If the filter is

dirty, replace it with a new filter.

4. Install the filter (B, Figure 28).
5. Install the cover (A, Figure 28) with the fastener(s) (C). Make sure that the

fastener(s) is tight.

Paper Air Filter - Low Profile

1. Move the latch (A, Figure 29) to unlock the cover (C).
2. Push in the tabs (B, Figure 29) and remove the cover (C).
3. Remove the filter (D, Figure 29).
4. To loosen debris, lightly tap the filter (D, Figure 29) on a hard surface. If the filter is

dirty, replace it with a new filter.

5. Install the filter (D, Figure 29).
6. Install the cover (C, Figure 29). Move the latch (A) to the locked position.

NOTE:

Check the fit of the foam seal (E, Figure 29). Make sure that the perimeter foam

seal is correctly seated in the channel (F).

Servicing the Fuel System

WARNING

Fuel and its vapors are flammable and explosive. Fire or explosion could result in

burns or death.

•

Keep fuel away from sparks, open flames, pilot lights, heat, and other ignition

sources.

•

Frequently examine the fuel lines, fuel tank, fuel cap, and connections for cracks

or leaks. Replace damaged parts.

•

If fuel spills, wait until it dries before you start the engine.

Fuel Strainer, if installed

1. Remove the fuel cap (A, Figure 30).
2. Remove the fuel strainer (B, Figure 30).
3. If the fuel strainer is dirty, clean or replace it. If you replace the fuel strainer, make

sure to use an original equipment replacement fuel strainer.

Storage

Fuel System

Refer to Figure: 31.

WARNING

Fuel and its vapors are flammable and explosive. Fire or explosion could result in

burns or death.
Fuel Storage

•

Because pilot lights or other ignition sources can cause explosions, keep fuel or

equipment away from furnaces, stoves, water heaters or other appliances that

have pilot lights.

Keep the engine level (normal operating position). Fill the fuel tank (A, Figure 31) with

fuel. For fuel expansion, do not fill above the fuel tank neck (B).
Fuel can become stale when kept in a storage container for more than 30 days. The use

of an alcohol-free fuel stabilizer and ethanol treatment in the fuel storage container is

recommended to prevent fuel degradation and keep the fuel fresh.
When you fill the fuel container with fuel, add an alcohol-free fuel stabilizer as specified

by the manufacturer’s instructions. If gasoline in the engine has not been treated with a

fuel stabilizer, it must be drained into an approved container. Operate the engine until it

is out of fuel.

Engine Oil

While the engine is still warm, change the engine oil. Refer to

Change the Engine Oil

section.

Troubleshooting

Assistance

For assistance, contact your local dealer or go to

BRIGGSandSTRATTON.COM

or call