Kohler KT17 Service Manual

Figure 7-4. Cylinder Barrel Identification
3. Using a valve spring compressor, compress the
valve springs until the valve keepers can be
removed, then release the compressor and re-
move the valves, retainers and springs. Some
engines also contain intake valve seals, these
should also be removed from the intake valve
guides.
NOTE: Mark valve assemblies with marking
pen or paint as coming from either the #1 or #2
side. Reused valves must be placed back in the
correct cylinders.
4. Remove piston pin retainers with a pliers. Using
a drift punch, tap piston pin through piston and
rod, disconnecting piston from rod. Mark pis-
tons and rods with paint or marker pen as either
#1 or #2.
NOTE: When removing piston pin, support pis-
ton to prevent bending the connecting rod.
Cylinder Heads- Inspection And Service
Blocked cooling fins often cause localized "hot
spots" which can result in "blown" cylinder head
gaskets. If gasket fails in area surrounding one of
the retaining capscrews, high temperature gases
can burn away portions of the aluminum alloy
head. A cylinder head in this condition must be
replaced.
Ifthe cylinder heads appear in good condition, use
a block of wood to scrape away carbon deposits. Be
careful not to nick or scratch the aluminum,
especially in gasket seating area (see Figure 7 -5).
43
SECTION 7
DISASSEMBLY
Figure 7-5. Cleaning Cylinder Heads
Cylinder heads should also be checked for flatness.
Use a feeler gauge and a surface plate or piece of
plate glass to make this check. Cylinder head
flatness should not vary more than .003", if it does,
replace the cylinder head (see Figure 7-6).
NOTE: Measure cylinder head flatness between
each cap screw hole.
In cases where the head is warped or burned away
it will also be necessary to replace the head screws.
The high temperatures that warped or burned the
head could have made the screws ductile which
will cause them to stretch when tightened.
Cylinder
Head
Feeler
Gauge
Plate
Figure 7-6. Checking Cylinder Head Flatness
Cylinder Barrels- Inspection
And Overhaul
Check all gasket surfaces to make sure they are
free of gasket fragments. Gasket surfaces must
also be free of deep scratches or nicks.
Scoring of the Cylinder Walls: Unburned fuel;
in severe cases, can cause scuffing and scoring of

Kohler KT17 Specifications

General

Brand	Kohler
Model	KT17
Category	Engine
Language	English