General Specifications
HP / kW
40 HP / 29.8 kW
Displacement
696 cc (42.5 cu in.)
Cylinders
2 (Inline-2)
WOT RPM
5000 - 5600
Weight
75 kg / 165 lbs
Drive & Lower Unit
Gear Ratio
2.09
Shaft Length
15, 20
Electrical System
Alternator Output 80 Watts
Starting System Manual/Electric
Technical Maintenance Toolkit
Verified service specifications for the Suzuki DT40 (1995)
Lubrication
Engine Oil
TC-W3 (50:1)
Gearcase Lube 610 ml
Ignition System
Spark Plug
NGK BR8HS
Gap Setting 0.95mm
Firing Order 1-2-3-4
Performance Specs
Idle RPM 700 ± 50
WOT Range 5000-5600
Alternator 80W
Standard Maintenance Intervals
20H Break-in Service
100H Annual Tune-up
300H Water Pump & Seals
Identification
The serial number for the Suzuki DT40 is typically found on a plate located on the transom bracket.
Technical Toolkit
Maintenance Compatibility
These models share common service parts with the Suzuki DT40:
Model Evolution
History of the Suzuki 40HP series over the years:
Standalone production year.
Category Discovery
Reference Data
Information compiled from Suzuki Marine factory service manuals and original sales literature published in 1995.