Club Car Carryall 300 2021, Maintenance And Service Manual

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65
Disassembly/Inspection and Service
17 690 15 Rev. -- KohlerEngines.com
Remove Oil Fill Tube
Details
A
B
C
A Oil Fill Tube B Oil Fill Tube Bracket
C Bracket Screw
NOTE: Unless oil fi ll tube is damaged, disassembly from
closure plate is unnecessary.
1. Remove bracket screw and oil fi ll tube bracket.
2. If necessary, remove tube from closure plate. If not,
allow oil fi ll tube to remain in closure plate. Tube will
be removed with closure plate as an assembly.
Remove Closure Plate
NOTE: Do not pry on gasket surface of crankcase or
closure plate, as this can cause damage and
leakage.
1. Remove screws securing closure plate to crankcase.
2. Remove closure plate, gasket, and dowel pins (if
required) from crankcase.
3. Remove closure plate and oil fi ll tube as an
assembly.
4. Remove shims from crankshaft.
Inspection
Inspect main bearing surface for wear or damage (refer
to Specifi cations). Replace closure plate if required.
Remove Balance Shaft
Remove balance shaft (with wave spring) by pulling it
straight out of crankcase.
Remove Camshaft and Valve Tappets
1. Remove camshaft by pulling it straight out of
crankcase.
2. Remove valve tappets by pulling them straight out of
crankcase. Mark their positions.
Automatic Compression Release (ACR)
ACR Operation Details
B
C
E
D
A
A Camshaft B Exhaust Cam Lobe
C
Decompression
Weight
D Return Spring
E Arm
ACR mechanism consists of a spring-loaded arm and
sliding pin mounted to camshaft. When engine is rotating
at low cranking speeds, arm holds pin so it protrudes
above heel of exhaust cam. This holds exhaust valve off
of its seat during fi rst part of compression stroke.
After engine speed increases centrifugal force causes
spring-loaded arm to move outward causing pin to
retract. When in this position pin has no eff ect on
exhaust valve and engine operates at full compression
and power.
Benefi ts
As a result of reduced compression at cranking speeds,
several important benefi ts are obtained:
1. Electric start models can use a smaller starter and
battery more practical for application.
2. ACR eliminates need for a spark retard/advance
mechanism. ACR eliminates this kickback making
manual starting safer.
3. Engines with ACR start much faster in cold weather
than engines without ACR.
4. Engines with ACR can be started with worn or fouled
spark plug. Engines without ACR are more diffi cult to
start with those same spark plug.