Disconnect Spark Plug Leads; Drain Oil From Crankcase And Remove Oil Filter; Remove Oil Cooler; Remove Muffler - Kohler command pro ECH749 Service Manual

Disassembly/Inspection and Service
Clean all parts thoroughly as engine is disassembled.
Only clean parts can be accurately inspected
and gauged for wear or damage. There are many
commercially available cleaners that will quickly remove
grease, oil, and grime from engine parts. When such a
cleaner is used, follow manufacturer's instructions and
safety precautions carefully.
Make sure all traces of cleaner are removed before
engine is reassembled and placed into operation. Even
small amounts of these cleaners can quickly break down
lubricating properties of engine oil.

Disconnect Spark Plug Leads

NOTE: Pull on boot only, to prevent damage to spark
plug lead.
Disconnect leads from spark plugs.

Drain Oil from Crankcase and Remove Oil Filter

NOTE: Some models are equipped with an oil drain
valve.
1. Remove oil fi ll cap, dipstick, and 1 oil drain plug.
2. Allow ample time for oil to drain from crankcase and
oil fi lter.
3. Remove and discard oil fi lter.

Remove Oil Cooler

1. Use an 8 mm Allen wrench to remove oil fi lter
threaded nipple.
2. Separate fi lter adapter from closure plate, leaving oil
lines attached. Remove screws mounting oil cooler
to blower housing, then remove cooler, lines, and
fi lter adapter as an assembly.
Remove Muffl er
1. Remove exhaust system and attaching hardware
from engine. On engines equipped with a port liner,
remove it now.
2. Remove oxygen sensor and disconnect connector
from wire harness.
104
Remove Air Cleaner Assembly
Heavy Duty Air Cleaner
1. Remove nuts securing air cleaner assembly to
throttle body.
2. Remove screws securing air cleaner assembly to air
cleaner bracket and remove air cleaner assembly.
Low-Profi le Air Cleaner (Optional)
1. Loosen retaining knob and remove cover.
2. Remove wing nut from element cover.
3. Remove element cover, air cleaner element with
precleaner, and stud seal.
4. Remove nuts.
5. Remove screws securing base and then remove
base.
Remove Throttle Control Panel
1. Disconnect throttle control cable.
2. Remove screws securing throttle control panel and
remove panel from blower housing.
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