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Specifications
3
MODEL
AIR COOLED
MT (23.0 HP)
MTEFI (26.0 HP)
LIQUID COOLED
MTL (25.0 HP)
MTLEFI (31.0 HP)
ENGINE
Manufacturer/Model Kohler Command Pro
CH23, 2 Cyl., Gasoline
(Air-Cooled)
Kohler Aegis
TM
LH685, 2 Cyl.,
Gasoline (Liquid-Cooled)
Kohler Command Pro
CH26, 2 Cyl., Gasoline (Air-
Cooled), Electronic Fuel
Injection (EFI)
Kohler Aegis
TM
LH775, 2 Cyl.,
Gasoline (Liquid-Cooled),
Electronic Fuel Injection (EFI)
Displacement CH23/CH680 41.1 cu. in. (674 cc)
Displacement CH26/CH735 44.0 cu. in. (721 cc)
Displacement LH685 41.1 cu. in. (674 cc)
Displacement LH775 45.6 cu. in. (748 cc)
HP (@ 3600 RPM) CH23/CH680 23.0
HP (@ 3600 RPM) CH26/CH735 26.0
HP (@ 3600 RPM) LH685 25.0
HP (@ 3600 RPM) LH775 31.0
Max. RPM (No Load)
3750
3750
Governed RPM 3600 3600
Max. Torque [ft-lb (N
·m) @ RPM]
CH23/CH680 37.9 (51.4) @ 2400
CH26/CH735 41.6 (56.4) @ 2700
LH685 35.9 (48.7) @ 2200
LH775 45.4 (61.6) @ 2400
Idle RPM 1200 75 1200 75
Spark Plug Type Champion
RC12YC Champion
RC14YC
Spark Plug Gap .030 in. (.76 mm) .030 in. (.76 mm)
Crankcase Capacity 1.7 qts (1.6 liters) 1.7 qts (1.6 liters)
Crankcase Lubricant API SG, SH, SJ or higher
Grade Oil Only with 10W-30
Viscosity above 0° F (-18° C),
or 5W-20 or 5W-30 Viscosity
below 32° F (0° C)
API SG, SH, SJ or higher
Grade Oil Only with 10W-30
Viscosity above 0° F (-18° C),
or 5W-20 or 5W-30 Viscosity
below 32° F (0° C)
Oil Filter 12 050 01 S 12 050 01 S
Cooling System CH23/CH680
Air-Cooled
Cooling System CH26/CH735 Air-Cooled
Cooling System LH685
LH775
Cooling System Capacity
(Approx.) LH685/LH775
Liquid-Cooled
Liquid-Cooled
1.25 Gallons (4.73 liters)
Coolant 50/50 Pre-Mix Anti-freeze/
water
Cooling Fan Electric radiator cooling fan
with reversible self-cleaning
action
Fuel Tank Capacity 5 Gallons (19.0 liters) 5 Gallons (19.0 liters)
Fuel Regular Grade Unleaded
Gasoline (87 Octane)
Regular Grade Unleaded
Gasoline (87 Octane)