gravely lawn tractors 816
![]()  | 1972 - 1978
800 SeriesGarden tractor  | 1972 - 1978  | 800 Series  | Garden tractor  | 
|---|---|---|---|---|
1972 - 1978  | ||||
800 Series  | ||||
Garden tractor  | ||||
1972 - 1978  | |
|---|---|
800 Series  | |
Garden tractor  | 
Engine options  | |
|---|---|
16.5HP Onan 816cc 2-cyl gasoline  | |
16HP Onan 716cc 2-cyl gasoline  | 
Engine Detail  | |
|---|---|
Onan CCKA  | |
gasoline  | |
2-cylinder  | |
air-cooled horizontal-shaft opposed-twin  | |
The CCKA was used for the first seven years of production on the 816, up until 1978.  | |
Displacement  | 816 cc
49.80 ci  | 
Bore/Stroke  | 3.00x3.25 inches
76 x 83 mm  | 
Power  | 16.5 hp
12.3 kW  | 
Rated RPM  | 3600  | 
Starter  | electric  | 
Starter volts  | 12  | 
Sparkplug gap  | 0.025 inches
0.635 mm  | 
Intake valve clearance  | 0.011 inches
0.279 mm  | 
Exhaust valve clearance  | 0.011 inches
0.279 mm  | 
Engine Oil  | |
|---|---|
![]()  | |
Oil capacity  | 2 qts
1.9 L  | 
Engine Detail  | |
|---|---|
Onan B43M  | |
gasoline  | |
2-cylinder  | |
air-cooled  | |
The B43M was used on the Gravely 816 for the final production year, in 1978.  | |
Displacement  | 716 cc
43.7 ci  | 
Bore/Stroke  | 3.25x2.62 inches
83 x 67 mm  | 
Power  | 16 hp
11.9 kW  | 
Rated RPM  | 3600  | 
Starter  | electric  | 
Starter volts  | 12  | 
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