John Deere 318 Engine


John Deere 318 lawn tractor photo
1983 - 1992
300 Series
Garden tractor
317
Series:316318
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.
Displacement709 cc
43.3 ci
Bore/Stroke3.25x2.62 inches
83 x 67 mm
Power (gross)18 hp
13.4 kW
Air cleanerfoam and paper
Compression6.5:1
Idle RPM1350-3450
Starter volts12
SparkplugJD AM38622
 NGK BPR5EFS
 Motorcraft AGRF32
Sparkplug gap0.025 inches
0.635 mm
Engine Oil
318 gasoline engine oil chart
Oil capacity1.75 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.
Displacement781 cc
47.7 ci
Bore/Stroke3.25x2.88 inches
83 x 73 mm
Power (gross)18 hp
13.4 kW
Idle RPM1350-3450
Starter volts12
SparkplugNGK BPR5EFS
 Champion RS14YC
Page information
Contact: Peter Easterlund
Updated on July 5, 2021
Copyright 2021 TractorData LLC
©2000-2021 - TractorData.com®. Notice: Every attempt is made to ensure the data listed is accurate. However, differences between sources, incomplete listings, errors, and data entry mistakes do occur. Consult official literature from the manufacturer before attempting any service or repair.