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Reduction Systems
2:1 Reduction Systems
All 2:1 reduction systems are lubricated by the
crankcase oil of the engine through special openings in
the closure plate. No special maintenance or service is
necessary. Check and maintain the oil level as outlined
on pages 8 and 9.
6:1 Reduction Systems
CS4 and CS6: Use an internal pinion and ring gear
system, independent of, and separated from the main
crankcase lubrication. See Figure 12. Use the same
weight oil in the reduction system that is being used in
the crankcase. Reduction System Capacity = .15
liters (5.07 fl. oz.). Change the reduction system oil
every 300 hours as follows:
1. Drain old oil out through the oil level/drain plug, tip
engine as required.
2. Engine must be level. Fill with new oil through the
oil fill plug hole on top until the oil level is up to the
bottom of the oil level/drain plug hole. Reinstall
both plugs securely.
NOTE: Operating the engine with loose or damaged air
cleaner components could allow unfiltered air
into the engine causing premature wear and
failure.
Service Precleaner
Wash and reoil the precleaner every 25 hours of
operation (more often under extremely dusty or dirty
conditions).
1. Remove the outer cover of the air cleaner
assembly and access the element.
2. Remove the precleaner from the paper element.
3. Wash the precleaner in warm water with
detergent. Rinse the precleaner thoroughly until all
traces of detergent are eliminated. Squeeze out
excess water (do not wring). Allow the precleaner
to air dry.
4. Saturate the precleaner with new engine oil and
squeeze out all excess oil.
5. Reinstall the precleaner over the paper element.
6. Reinstall and secure the air cleaner cover.
Service Paper Element
Every 100 hours of operation (more often under
extremely dusty or dirty conditions), replace the paper
element.
1. Remove the outer cover of the air cleaner
assembly and access the element/precleaner
assembly. Remove the wing nut securing the
element assembly, or pull the complete assembly
out of the cover/housing (some Heavy Duty Air
Cleaners). Separate the precleaner from the
element and service as outlined above.
2. Do not wash the paper element or use pressurized
air, as this will damage the element. Replace a
dirty, bent, or damaged element with a genuine
Kohler element. Handle new elements carefully;
do not use if the sealing surfaces are bent or
damaged.
3. When servicing the air cleaner, check the air
cleaner base. Make sure it is secured and not
bent or damaged. Check the air cleaner cover/
housing for damage or improper fit. Replace all
bent or damaged air cleaner components.
On Standard Air Cleaner Systems:
Before air cleaner is reassembled make sure
rubber seal is in position around stud. Inspect seal
and replace if its condition is questionable in any
way.
Figure 12. CS4 and CS6 6:1 Reduction System.
CS8.5, CS10, and CS12: Use a gear reduction system
which is lubricated by the crankcase oil of the engine
through holes in the closure plate. No special
maintenance or service is necessary.
Service Precleaner and Air Cleaner Element
This engine is equipped with a replaceable, high
density paper air cleaner element. All engines are also
equipped with an oiled, foam precleaner which covers
the paper element. See Figure 13 on page 11.
Check the air cleaner daily or before starting the
engine. Check for a buildup of dirt and debris around
the air cleaner system. Keep this area clean. Also
check for loose or damaged components. Replace all
bent or damaged air cleaner components.
Oil Fill Plug
Oil Level/Drain Plug