Electric equipment

• Battery is discharged.
• Battery terminal(s) is not tightened correctly.
• Fuse is blown.
• Cord connection(s) is loose.
• Spark plug cap(s) is removed.
• Spark plug(s) is not securely tightened.
• Spark plug(s) is burnt, dirty, damaged or bridged.

Fuel system

• Fuel tank is not filled adequately with the correct fuel.(*)
• Fuel cock is closed.
• Poor quality fuel (stale or dirty gasoline) is used.
• Piping and/or filter is clogged.
• Carburetor is clogged.
• Throttle is not at its START/SUCTION position.

Other

• Poor compression of cylinder.
• Overheat sensor is operated.(*)
• Engine oil is emptied.(*)

Note: Asterisked item(*) can be checked by the OK monitor.