Table of Contents
Advertisement
4. Reinstall the spark plug into the cylinder head.
Torque the spark plug to 38.0-43.4 N·m
(28-32 ft. lb.).
Battery Charging
WARNING: Explosive Gas!
Batteries produce explosive hydrogen gas while being
charged. To prevent a fire or explosion, charge
batteries only in well ventilated areas. Keep sparks,
open flames, and other sources of ignition away from
the battery at all times. Keep batteries out of the reach
of children. Remove all jewelry when servicing
batteries.
Before disconnecting the negative (-) ground cable,
make sure all switches are OFF. If ON, a spark will
occur at the ground cable terminal which could cause
an explosion if hydrogen gas or gasoline vapors are
present.
Fuel Filter
Some engines are equipped with an in-line fuel filter.
Periodically inspect the filter and replace when dirty.
Use a genuine Kohler filter.
Reduction Gear Units
On engines equipped with a reduction gear unit,
remove the oil plug on lower part of cover every 50
hours of operation to check oil level. With the engine
level, the oil level of the unit should be up to the bottom
of the oil plug hole. To add oil, remove the vented plug
at the top of the unit. Use AGMA No. 7 EP oil in the
reduction gear unit. Following are a few products that
meet this spec:
Mobilgear 634
Pennzoil Super Maxol ''S''
Pennzoil Maxol EP Gear Oil
Pennzoil Super Maxol EP Gear Oil
Pennzoil Super Pennztac EP Gear Oil
Carburetor Troubleshooting
and Adjustments
NOTE: Carburetor adjustments should be made only
after the engine has warmed up.
These engines are equipped with one of two basic
types of fixed jet carburetors – Walbro or Nikki.
The carburetor is designed to deliver the correct
fuel-to-air mixture to the engine under all operating
conditions. On both types of carburetors, the fixed main
jet is calibrated at the factory and is not adjustable. On
Walbro carburetors, the low idle fuel adjusting needle is
set at the factory and normally does not need
adjustment. Certified engines may have a fixed idle or
limiter cap on the idle fuel adjusting needle. The idle
12
fuel can only be adjusted within the limits allowed by
the cap. Nikki carburetors have a sealed idle fuel
adjusting needle which is not adjustable.
Walbro
Low Idle
Speed Adj.
Screw
Low Idle
Fuel Adj.
Needle
Nikki
Low Idle
Speed Adj.
Screw
Figure 12. Carburetors.
NOTE: To ensure correct engine operation at
altitudes above 1525 meters (5000 ft.), it may
be necessary to have an authorized Kohler
dealer install a special high-altitude jet kit in
the carburetor. If a high-altitude kit has been
installed, the engine must be reconverted to
the original jet size, before it is operated at
lower altitudes, or overheating and engine
damage can result.
Troubleshooting
If engine troubles are experienced that appear to be
fuel system related, check the following areas before
adjusting the carburetor.
• Make sure the fuel tank is filled with clean, fresh
gasoline.
• Make sure the fuel tank cap vent is not blocked
and that it is operating properly.
• If the fuel tank is equipped with a shut-off valve,
make sure it is open.
• If the engine is equipped with an in-line fuel filter,
make sure it is clean and unobstructed. Replace
the filter if necessary.
Advertisement
Table of Contents
