Kohler Command PRO CH620

Troubleshoot1ng
Do not attempt to service or replace major engine components, or any items that require speclal
timing or adjustment procedures. This werk should be performed by a Kahler authorized dealer.
Dirt In Dirty
lmproper
Fuel
Debris lncorrect Engine
Screen Oil Level Overloaded
Dirty Air
Cleaner
Fuel Une
Will Not Start
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Hard Starling
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Stops Suddenly
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Lacks Power
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Operates Erratically .
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Knacks or Pings
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Skips or Misfires
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Backfires
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Overheats
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High Fuel
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Consumption
Engine Specifications ·~
1--
Bore 1
Model Strake
I ~···~~:,1~- Maximum Angle
. Oil Capacity Spark of Operation
;D1s placement (Refill) IPlug Gap (@ full oil level)*
CH621
CV621
3.03 in. 38.1 CU. in.
CH641
(77mm) (624 CC)
CV641
CH620
CV620
CH640
CV640
3.2in.
2.6in.
41 CU. in.
CH23/CH680
(80mm)
(67 mm)
(674 ce)
1.7-1.9 u.s. qt
0.03 in.
CH670
(1.6-1.8 L)
(0.76 mm)
25°
CV23/CV680
CV670
CH730
CV730
44.2 CU. in.
CH740
3.27in.
(725 cc)
CV740
(83mm)
CH750
2.72in. 45.6cu. in.
CV750
(69 mm) (747 cc)
*Exceeding maximum angle·of operation may cause engine damage from insufficient lubrication.
Additional specification information can be found in service manual at KohlerEngines.com.
Exhaust Emission Control System for models CH23, CV23, CH620-CH740, CV620-CV740,
CH750, and CV750 is EM for U.S. EPA, California, and Europe.
Any and all horsepower (hp) references by Kahler are Certified Power Ratings and per SAE J1940
& J1995 hp standards. Details on Certified Power Ratings can be found at KohlerEngines.com. '
8 KohlerEngines.com
24 590 31 Rev. C
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