Walker MT - Manual (Page 8)

Specifications
6
MODEL AIR COOLED
MT (20.0 HP)
MTEFI (26.0 HP) LIQUID COOLED
MTL (25.0 HP)
ENGINE
Manufacturer/Model Kohler Command CH20,
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)
Displacement CH20 38.1 cu. in. (624 cc)
Displacement CH26 44.0 cu. in. (725 cc)
Displacement LH685 41.1 cu. in. (674 cc)
HP (@ 3600 RPM) CH20 20.0
HP (@ 3600 RPM) CH26 26.0
HP (@ 3600 RPM) LH685 25.0
Max. RPM (No Load) 3750 3750
Governed RPM 3600 3600
Max. Torque [ft-lb (N
⋅
m) @ RPM]
CH20 32 (44.0) @ 2500
CH26 41.6 (56.4) @ 2700
LH685 35.9 (48.7) @ 2200
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 CH20 2.1 qts (2.0 liters)
Crankcase Capacity CH26 2.1 qts (2.0 liters)
Crankcase Capacity LH685 2.0 qts (1.9 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 CH20 Air Cooled
Cooling System CH26 Air Cooled
Cooling System LH685
Cooling System Capacity
(Approx.)
LH685
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)