Propeller Selection Guide; Battery Requirement; Powerhead Direction Of Rotation Description - Suzuki DF350A Service Manual

Propeller Selection Guide

An outboard motor is designed to develop its rated
power within a specified engine speed range. The
maximum rated power delivered by the DF350A model is
shown below.
Recommended full throttle speed range
DF350A
NOTICE
Installing a propeller with either too much or
too little pitch will cause incorrect maximum
engine speed, which may result in severe
damage to the motor.
Select a propeller that will allow the engine to
reach the recommended operating range at
full throttle with the maximum boat load.
If the standard propeller fails to meet the above
requirement, use another pitch propeller to hold the
engine speed within the range specified above.
NOTICE
Using the improper combination of front and
rear propellers can cause lower unit damage.
Confirm the size of the front and rear
propellers when installing them.
The front and rear propellers must be the
same number of blades, diameter and pitch.
Propeller size chart
Front propeller
Blade x Dia. (in.) x Pitch (in.)
3 x 15 and 1/2 x 19.5
3 x 15 and 1/2 x 21
3 x 15 and 1/2 x 22.5
3 x 15 and 1/2 x 24
3 x 15 and 1/2 x 25.5
3 x 15 and 1/2 x 27
3 x 15 and 1/2 x 28.5
Rear propeller
Blade x Dia. (in.) x Pitch (in.)
3 x 15 and 1/2 x 19.5
3 x 15 and 1/2 x 21
3 x 15 and 1/2 x 22.5
3 x 15 and 1/2 x 24
3 x 15 and 1/2 x 25.5
3 x 15 and 1/2 x 27
3 x 15 and 1/2 x 28.5
CENHN1110101008
5 700 – 6 300 r/min

Battery Requirement

Suzuki recommends a 12 V cranking type lead acid
battery for the DF350A.
Minimum battery requirement for starting the engine is
provided below.
The battery must satisfy one of the specifications
described below.
NOTE
• The specifications listed below are the
minimum battery rating requirements for
starting the engine.
• If your boat application requires additional
battery loads, it is recommended that an
auxiliary battery or batteries be installed.
• Dual-purpose (Cranking/Deep Cycle)
batteries can be used if they meet the
minimum specifications listed below
(MCA, CCA, or RC).
• Do not use a Deep Cycle battery for the
main cranking battery.
• The use of Maintenance-Free, sealed, or
Gel-Cell batteries is not recommended
because they may not be compatible with
Suzuki's charging system.
• When connecting batteries in parallel, they
must be of the same type, capacity,
manufacturer, and of similar age. When
replacement is necessary, they should be
replaced as a set.
• It is recommended that the battery be
installed in an enclosed case.
• When connecting batteries, hexagon nuts
must be used to secure battery leads to
battery terminals.
Battery specification
1 000 Marine Cranking Amps (MCA)/ABYC, or 800
Cold Cranking Amps (CCA)/SAE or 180 Reserve
Capacity (RC) Minutes/SAE or 12 V 130 AH

Powerhead Direction of Rotation Description

This outboard motor is designed with a L.H. (left hand)
rotation powerhead utilizing an offset crankshaft. This
design has the advantage of reducing the size of the
motor and keeping the overall motor's weight closer to
the boat transom and therefore closer to the boat C/G
(Center of Gravity).
Rotation of the driveshaft is accomplished through a
crankshaft drive gear and a driveshaft driven gear.
These gears are located beneath the powerhead in the
same oil bath location as the camshaft chain.
As the rotational direction of the driven gear will be
opposite of the drive gear, a left hand rotation
powerhead design was adopted to retain a conventional,
standard rotation (right hand) driveshaft output.
General Information:
CENHN1110101009
CENHN1110101010
0A-6