WARNING
POISONOUS GAS HAZARD. Engine exhaust contains carbon monoxide, a poisonous gas that could kill you in minutes. You CANNOT see it, smell it, or taste it. Even if you do not smell exhaust fumes, you could still be exposed to carbon monoxide gas. If you start to feel sick, dizzy, or weak while using this product, shut it off and get to fresh air RIGHT AWAY. See a doctor. You may have carbon monoxide poisoning.
Operate this product ONLY outside far away from windows, doors and vents to reduce the risk of carbon monoxide gas from accumulating and potentially being drawn towards occupied spaces.
Install
DO NOT run this product inside homes, garages, basements, crawlspaces, sheds, or other
ALWAYS place this product downwind and point the engine exhaust away from occupied spaces.
NOTICE: This engine was shipped from Briggs & Stratton without oil. Before you start the engine, make sure you add oil according to the instructions in this manual. If you start the engine without oil, it will be damaged beyond repair and will not be covered under warranty.
Note: Some engines and equipment have remote controls. See the equipment manual for location and operation of remote controls.
1.Check the oil level. See the How To Check/Add Oil section.
2.Make sure equipment drive controls, if equipped, are disengaged.
3.Turn the fuel
4.Move the throttle control (B) to the fast 
position. Operate the engine in the fast
position.
5. Pull out the choke control (C), if equipped, to the choke |
| position. |
Note: To start the engine with a dry fuel system (first time starting or after running out
of fuel), additional cranking time in the choke |
|
| position will be required. This will |
give the fuel pump time to prime the fuel system. |
| ||
6.Push the stop switch (D), if equipped, to the on position.
7.Turn the electric start switch (E) to the on/start position (Figure 4).
8.If the engine fires but will not continue to run, move the choke control (C) to the run 
position to start the engine.
NOTICE: To extend the life of the starter, use short starting cycles (five seconds maximum). Wait one minute between starting cycles.
Note: If the engine does not start after repeated attempts, go to VanguardEngines.com or call
9.As the engine warms up, move the choke control (C) to the run 
position.
How To Stop The Engine - Figure 4
WARNING
Fuel and its vapors are extremely flammable and explosive.
Fire or explosion can cause severe burns or death.
Do not choke the carburetor to stop engine.
1.Move the throttle control to the slow position, turn the key switch (E) to the off position (Figure 4). Remove the key and keep in a safe place out of the reach of children.
2.Push the stop switch (D), if equipped, to the off position.
3.After the engine stops, turn the fuel
Maintenance
We recommend that you see any Briggs & Stratton Authorized Dealer for all maintenance and service of the engine and engine parts.
NOTICE: All the components used to build this engine must remain in place for proper operation.
WARNING: When performing maintenance that requires the unit to be tipped, the fuel tank must be empty or fuel can leak out and result in a fire or explosion.
Emissions Control
Maintenance, replacement, or repair of the emissions control devices and systems may be performed by any
WARNING
Unintentional sparking can result in fire or electric shock.
Unintentional
Fire hazard
Before performing adjustments or repairs:
Disconnect the spark plug wire and keep it away from the spark plug.
Disconnect battery at negative terminal (only engines with electric start.)
Use only correct tools.
Do not tamper with governor spring, links or other parts to increase engine speed.
Replacement parts must be of the same design and installed in the same position as the original parts. Other parts may not perform as well, may damage the unit, and may result in injury.
Do not strike the flywheel with a hammer or hard object because the flywheel may later shatter during operation.
When testing for spark:
Use approved spark plug tester.
Do not check for spark with spark plug removed.
Maintenance Chart
First 5 Hours
Change oil
Every 8 Hours or Daily
Check engine oil level
Clean area around muffler and controls
Every 100 Hours or Annually
Clean or change air filter * Y
Change engine oil and filter
Clean
Replace spark plug
Check muffler and spark arrester
Every 250 Hours or Annually
Check valve clearance. Adjust if necessary.
Every 400 Hours or Annually
Change air filter Y
Replace fuel filter
Clean air cooling system *
Clean oil cooler fins *
Every 600 Hours or Annually
Change safety filter (if equipped)
*In dusty conditions or when airborne debris is present, clean more often.
YEvery third air filter change, change the inner safety filter (if equipped).
Carburetor And Engine Speed Adjustment
Never make adjustments to the carburetor or engine speed. The carburetor was set at the factory to operate efficiently under most conditions. Do not tamper with the governor spring, linkages, or other parts to change the engine speed. If any adjustments are required contact a Briggs & Stratton Authorized Service Center for service.
NOTICE: The equipment manufacturer specifies the maximum speed for the engine as installed on the equipment. Do not exceed this speed. If you are unsure what the equipment maximum speed is, or what the engine speed is set to from the factory, contact a Briggs & Stratton Authorized Service Center for assistance. For safe and proper operation of the equipment, the engine speed should be adjusted only by a qualified service technician.
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