1.3
Section 1
Safety and General Information
1
Figure 1-2. Explanation of Engine Identifi cation Numbers.
Oil Recommendations
Using the proper type and weight of oil in the
crankcase is extremely important. So is checking oil
daily and changing oil regularly. Failure to use the
correct oil, or using dirty oil, causes premature engine
wear and failure.
Oil Type
Use high-quality detergent oil of API (American
Petroleum Institute) Service Class SJ or higher. Select
the viscosity based on the air temperature at the time
of operation as shown in the following table.
°F -20 020324060
50 80 100
°C -30 -20 -10 0 10 20 30 40
5W-30
10W-30
Kohler 10W-30
SAE 30
Model No.
Electronic Fuel Injection (EFI)
Command Engine
Numerical Designation
630
650
680
730
740
749
Spec. No.
ECH630-XXXX
ECH650-XXXX
ECH680-XXXX
ECH730-XXXX
ECH740-XXXX
ECH749-XXXX
Year Manufactured Code
Code Year
39 2009
40 2010
41 2011
Factory Code
39 05810334
E C H 749
Horizontal Crankshaft
A.
B.
C.
Serial No.
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