Air Force F-19 User Manual

28 pages

Questions and Answers:

B
brenda18Aug 13, 2025
Why my Air Force Lawn Mower engine will not start?
- K
  Kaitlin DeleonAug 13, 2025
  There are several reasons why your Air Force Lawn Mower engine might not start: * The engine might be under load. Try raising the height of cut. * The fuel might be incorrect or contaminated. In this case, drain the tank and fill it with the correct, clean fuel. * The spark plug lead might be disconnected. Ensure it's connected. * The OPC Bail Arm might not be released. Operate the OPC Bail Arm. * The spark plug might be faulty. Clean, adjust, or replace the plug. * There might be faulty wiring. Check the wiring.
M
Mark DavisAug 16, 2025
Why is my Air Force Lawn Mower engine running rough?
- Y
  ysalazarAug 16, 2025
  Your Air Force Lawn Mower engine might run rough due to several reasons: * The spark plug lead might be becoming disconnected during use. Make sure to connect it. * The spark plug might be faulty. Clean, adjust, or replace the plug. * The air cleaner might be blocked. Service the air cleaner. * The fuel might be incorrect or contaminated. Drain the tank and fill it with the correct fuel.
K
Kevin MorganAug 20, 2025
What to do if my Air Force F-19 Lawn Mower engine runs then stops?
- J
  Justin SuttonAug 20, 2025
  If your Air Force Lawn Mower engine runs then stops, it could be due to: * Fuel starvation. Try filling the fuel tank. * A blocked fuel cap vent. Clean the fuel cap assembly. * A closed petcock. Open the petcock.

Air Force F-19 Specifications

General

Brand	Air Force
Model	F-19
Category	Lawn Mower
Language	English

Summary

Safety Precautions

Training

Read manual, get trained, owner responsible for user training.

Preparation

Wear protective footwear/clothing, evaluate terrain, inspect area for objects.

Operation Safety

Fuel Handling Precautions

Use approved containers, do not smoke, refuel outdoors, use fresh fuel.

Safe Operation Practices

Slope and Maintenance Safety

Slope Operation

Engine Stop and Maintenance Prep

Repair and Storage Safety

Repair Safety

Storage Safety

Machine Assembly

Lower Handlebar Assembly

Upper Handle Assembly

Throttle & OPC Cable Assembly

Footstop Assembly

Before Starting the Machine

Prevent Engine Damage

Oil and Fuel Requirements

Operating the Machine

Starting the Machine

Follow steps for choke, petcock, footstop, and starter rope. OPC Bail Arm must be held.

Cutting Landscapes

Mow flat landscapes in straight lines. Move side to side down slopes.

Stopping and Adjusting

Stopping the Machine

Release OPC Bail Arm to stop. Pull spark plug lead if engine fails.

Cutting Height Adjustment

Follow steps to adjust cutting disc height: petcock off, disconnect spark plug, tilt machine, remove bolt/spacers.

Machine Maintenance

Engine and Deck Maintenance

Cutting System Maintenance

Flexiblade and Storage

Maintenance Schedule

Before Each Use

After the First 5 Hours

Every 5 Hours

Every 25 Hours

Every 50 Hours

Every 100 Hours

Every 150 Hours

Storage Over 30 Days and Winterized Storage

Troubleshooting

Engine will not turn over

Check OPC Bail Arm, oil level, and obstructions under deck.

Engine smokes

Check oil level and service air cleaner.

Engine runs then stops

Check fuel, fuel cap vent, and petcock.

Engine will not start

Check load, fuel, spark plug lead, OPC Bail Arm, spark plug, and wiring.

Engine runs rough

Check spark plug lead, spark plug, air cleaner, and fuel.

Engine vibrate excessively

Tighten/replace bolts, balance/replace cutting system, or contact dealer for crankshaft issues.

Uneven cut

Balance/replace cutting system.

Poor hovering

Contact dealer, check/unblock impeller vents, clean underdeck, tighten cutting system.