Kohler RH255 Service Manual page 38

Disassembly/Inspection and Service
Remove Carburetor
Explosive Fuel can cause fi res and severe
burns.
Do not fi ll fuel tank while engine is hot or
running.
Gasoline is extremely fl ammable and its vapors can
explode if ignited. Store gasoline only in approved
containers, in well ventilated, unoccupied buildings,
away from sparks or fl ames. Spilled fuel could ignite
if it comes in contact with hot parts or sparks from
ignition. Never use gasoline as a cleaning agent.
Cylinder Head Components
K
J
A Valve Cover
E Push Rod Guide
Intake Valve Stem
I
Seal
M Dowel Pins
Remove Valve Cover/Breather, Rocker Arms, Push
Rods and Cylinder Head Assembly
NOTE: Mark location of push rods and any other part
removed that will be reused.
NOTE: Valve cover is sealed to cylinder head using
RTV silicone sealant. When removing valve
cover, use care not to damage gasket surfaces
of cover and cylinder head. To break RTV seal,
hold a block of wood against 1 fl at face of valve
cover. Strike wood fi rmly with a mallet. If seal
doesn't break loose after 1 or 2 attempts, repeat
procedure on other side.
38
WARNING
M
N
L
B Adjusting Nut
F Push Rod
J Cylinder Shroud
N Cylinder Head
KohlerEngines.com
Slide carburetor off mounting studs while disconnecting
throttle linkage and dampening spring. Remove
carburetor to insulator gasket, insulator, and insulator to
cylinder head gasket.
Remove Electric Starter (if equipped)
Remove screws securing electric starter to crankcase.
Remove Blower Housing/Retractable Starter
1. Remove nuts securing blower housing/retractable
starter assembly.
2. Remove blower housing/retractable starter
assembly.
G
H
I
D
E
F
C Rocker Arm
G Valve Keeper
K Valve
1. Remove screws and remove valve cover from
engine. Breather assembly is inside valve cover.
2. Remove screws securing cylinder shroud and
remove cylinder shroud.
3. Loosen and remove rocker arm lock nuts and
adjuster nuts. Remove rocker arms and push rods.
4. Remove spark plug.
5. Remove screws securing cylinder head.
6. Remove cylinder head, dowel pins, and cylinder
head gasket.
B
A
C
D Rocker Arm Stud
H Valve Spring
L Spark Plug
18 690 06 Rev. --