Specifications

13 HP Engine For technical questions, please call 1-800-444-3353. PAGE 7
TECHNICAL
SPECIFICATIONS
Engine Type
13 HP Horizontal Single
Cylinder 4 stroke
Cooling System Forced air cooled
Bore x Stroke 88mm x 64mm
Displacement 389cc
Compression Ratio 8.0:1
Rotation viewed from PTO
(power takeoff - the output shaft)
Counterclockwise
Shaft Size
Ø 1” x 2-
7
/
8
” Long
1
/
4
” Keyway
3
/
8
”-24 UNF inner thread
Fuel Type
89+ octane unleaded
gasoline
Engine Oil
Type SAE
10W30 above 32° F
5W30 at 32° F or below
Capacity 0.63 Quarts
Spark Plug
Type BPR6ES (NGK), F7TC
Gap 0.7~ 0.8mm
Valve
Clearance
Intake 0.15 ± 0.02 mm
Exhaust 0.20 ± 0.02 mm
Idle Speed 1,500 ± 150 RPM
EPA Only Model: The emission con-
trol system for this Engine is warranted for
standards set by the U.S. Environmental
Protection Agency. For warranty informa-
tion, refer to the last pages of this manual.
EPA/CARB Model: The emission
control system for this Generator’s Engine
is warranted for standards set by the U.S.
Environmental Protection Agency and by
the California Air Resources Board (also
known as CARB). For warranty informa-
tion, refer to the last pages of this manual.
At high altitudes, the engine’s carbu-
retor, governor (if so equipped), and any
other parts that control the fuel-air ratio will
need to be adjusted by a qualied me-
chanic to allow efcient high-altitude use
and to prevent damage to the engine and
any other devices used with this product.
UNPACKING
When unpacking, make sure that the
item is intact and undamaged. If any parts
are missing or broken, please call Harbor
Freight Tools at 1-800-444-3353 as soon
as possible.