Suzuki DF70A Service Manual

1H-3 Ignition System:
Ignition Timing Chart
The following chart is an example for ignition at 10° BTDC.
Ignition Timing Control Mode
• When Cranking
The ignition timing is fixed at 5° BTDC until the engine starts.
• When Idling / Trolling
The ignition timing is controlled within the range of 0° ± 5° BTDC to provide stable engine operation at the specified
idling / trolling speed.
• When Running (Normal Operation)
The ignition timing ranges between 0° – 27° BTDC, depending on engine operating conditions.
No.1 cylinder
No.3 cylinder
No.4 cylinder
No.2 cylinder
CKP sensor
signal
CMP sensor
signal
In.
Ex.
Ep.
Cm.
In.
Ex.
Ep.
Cm.
In.
Ex.
Ep.
Cm.
In.
Ex.
Ep.
Cm.
In.
Ex.
Ep.
Cm.
In.
Ex.
Ep.
Cm.
No.1 Ignition
signal
No.3 Ignition
signal
No.4 Ignition
signal
No.2 Ignition
signal
140° 220°
40° 40°
180°
100°
140°
CMP sensor - 6 signals / 720°(crankshaft 2 rotation)
32 signals / crankshaft 1 rotation
Spark timing
TDC
TDC
TDC
TDC
TDC
TDC
TDC
TDC
Cm.: Compression, Ep.: Explosion, Ex.: Exhaust, In.: Intake, TDC: Top Dead Center
I9J011180003-05
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Suzuki DF70A Specifications

General

Engine Type	4-Stroke DOHC 16-Valve
Starting System	Electric
Steering	Remote
Number of Cylinders	4
Maximum Output	70 HP
Alternator	12V 27A
Trim Method	Power Trim and Tilt
Gear Ratio	2.59:1
Exhaust	Through Prop Hub Exhaust
Max Output	70 hp
Ignition System	Fully transistorized ignition
Fuel Tank Capacity	External
Weight	160 kg
Full Throttle Operating Range	5, 300 - 6, 300 rpm
Fuel Type	Unleaded Gasoline
Shaft Length	L: 508 mm, X: 635 mm
Displacement	1, 502 cc
Fuel Delivery System	Multi-point sequential electronic fuel injection
Oil Capacity	4.0 L
Alternator Output	27A