Engines overview | |
18HP Onan 709cc 2-cyl gasoline | |
18HP Onan 781cc 2-cyl gasoline |
Engine Detail | |
Onan B43G | |
gasoline | |
2-cylinder 4-valve | |
air-cooled horizontal-shaft opposed twin | |
The Onan B43G was used from 1983 to 1987, ending with tractor serial number M00318X420000. | |
Displacement | 709 cc 43.3 ci |
Bore/Stroke | 3.25x2.62 inches 83 x 67 mm |
Power (gross) | 18 hp 13.4 kW |
Air cleaner | foam and paper |
Compression | 6.5:1 |
Idle RPM | 1350-3450 |
Starter volts | 12 |
Sparkplug | JD AM38622 |
  | NGK BPR5EFS |
  | Motorcraft AGRF32 |
Sparkplug gap | 0.025 inches 0.635 mm |
Engine Oil | |
![]() | |
Oil capacity | 1.75 qts 1.7 L |
Engine Detail | |
Onan P218 | |
gasoline | |
2-cylinder | |
air-cooled horizontal-shaft opposed twin | |
The Onan P218 was used in the John Deere 318 from 1987, beginning at serial number M00318X420001, through the end of production. | |
Displacement | 781 cc 47.7 ci |
Bore/Stroke | 3.25x2.88 inches 83 x 73 mm |
Power (gross) | 18 hp 13.4 kW |
Compression | 7:1 |
Idle RPM | 1350-3450 |
Torque | 31 lb-ft 42.0 Nm |
Torque RPM | 2200 |
Starter volts | 12 |
Sparkplug | NGK BPR5EFS |
  | Champion RS14YC |
Sparkplug gap | 0.025 inches 0.635 mm |
Engine Oil | |
![]() | |
Oil capacity | 1.75 qts 1.7 L |
John Deere 318 Engine | |
![]() |
Page information | |
Contact: Peter Easterlund | |
Updated on March 14, 2022 | |
Copyright 2022 TractorData LLC |