Lawn Tractors > John Deere > JDX8

John Deere JDX8 Engine



John Deere JDX8 tractor photo
1973 - 1975
Model year
Snowmobile
Series map:
JDX4
JDX8
25.0hp
40.0hp
Engine Detail
Canadian Curtiss-Wright KEC 440/21
gasoline
2-cylinder
air-cooled
Displacement437 cc
26.7 ci
Bore/Stroke2.60x2.52 inches
66 x 64 mm
Power40 hp
29.8 kW
Fuel systemWalbro WDA-34 carburetor
Cooling systemfan
Rated RPM6750
Startermanual-recoil
 electric OptOptional
Starter volts12
SparkplugChampion L-78
Sparkplug gap0.020 inches
0.508 mm
Page information
Peter Easterlund - owner of TractorData.com
Copyright 2025 TractorData.com®
TractorData is a family-owned small business located in Minnesota that has been providing reference information on tractors since 1999.
Peter Easterlund - owner/author
Email: Peter@TractorData.com
Updated on June 18, 2025
©2000-2025 - 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.