Suzuki DF 40 User Manual

POWER TRIM AND TILT 8-20
TRIM/TILT “DOWN” CIRCUIT
The electric motor is operating in a counterclockwise direction. Check valve B will open, allowing oil to flow
from the reservoir to the pump. Oil flow from the pump enters the spool valve, moving it to the right, thereby
opening the “up” pressure main check valve. Oil from the lower cylinder chamber will go through the “up”
pressure main check valve to the pump.
Pressure built up by the pump will open the “down” pressure main check valve and oil will enter the upper
cylinder chamber. The piston will retract (move inward), which will tilt the outboard down. Oil in the lower
cylinder chamber is returned to the pump through the “up” pressure main check valve.
When full “down” position is reached, continued operation of the “down” relay will have no effect, as pump oil
flow will be returned to the reservoir through the “down” relief valve.
Oil reservoir
Upper cylinder chamber
Tilt rod
Piston
Check valveB
“DOWN” relief valve
Gear pump
Spool valve
“DOWN” pressure main check valve
“UP” pressure main check valve
Lower
cylinder
chamber

Suzuki DF 40 Specifications

General

Displacement	941 cc
Starting System	Electric
No. of Cylinders	3
Steering	Remote
Gear Ratio	2.27:1
Alternator Output	12V 19A
Engine Type	4-Stroke, DOHC
Maximum Output	40 hp
Fuel System	Multi-Point Sequential Electronic Fuel Injection
Shaft Length	S: 381 mm, L: 508 mm
Oil Capacity	2.7 L