Owner`s manual

20
Kohler Diesel
15LD 400/KD400
Hydraulic Lifter Rocker Arm Torque Procedure
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the hydraulic lifter rocker arm torque procedure on these
engines. The engine uses hydraulic lifters so no valve
settings are required. To properly install the rocker arms on
this engine follow the instructions below.
1. Make sure the piston is at bottom dead center.
2. Install spacer making sure that the tab on the spacer is
aligned with the slot in the cylinder head.
3. Install rocker arm, washer, and nut making sure the
push rod is correctly installed in the lifter.
4. Carefully torque the hold down nut to 10 N·m (7.38 ft. lbs.).
5. Allow the engine to sit for approximately four hours to
allow the lifters to bleed down.
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using the recoil starter (do not engage starter motor),
or by hand to ensure there is no contact between the
valves and the piston.
7. Retorque the hold down nut to 10 N·m (7.38 ft. lbs.).
Rocker Arm Spacer Installed
Rocker Arm Assembly Installed
All Air-Cooled Series
Quick Stop Device (QSD)
The quick stop device system, or QSD, is available on all
multi-cylinder air-cooled series engines. The system uses
an electric solenoid in conjunction with the fuel lift pump and
check valves to quickly shut down the engine.
Use of an auxiliary fuel pump before the QSD is not
recommended. It is possible that the auxiliary pump can
push fuel past the plunger of the QSD and allow the
engine to continue running after power is removed from the
solenoid.
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before the QSD to protect the plunger from being damaged
by possible contaminates in the fuel system. The in-line
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QSD Fuel Line Routing
Outlet to Fuel Lift
Pump Inlet
Inlet From Fuel
Lift Pump Outlet
Outlet to Injection
Pump Inlet
Inlet From
Fuel Tank
Air Bleed
Screw