Installation guide
01
2
3
51ENGINE ACCESSORIES –POWER TAKEOFF
NEUTRA-SALT
Neutra-Salt engine flushing kit
Designed for both freshwater- and saltwater-cooled engines that have 
an engine-driven sea-water pump.
The Neutra-Salt Engine Flushing System is available for installation on 
all inboards and sterndrives. This system is designed for both freshwater-
and saltwater-cooled engines that have an engine-driven sea-water 
pump. As a saltwater boater, you are continually challenged by the cor-
rosive effects of salt -both inside and outside your engine - particularly 
when the boat is sitting unused in the water. Now, with the installation 
and use of the Neutra-Salt Engine Flushing System, you have an effec-
tive and simple solution to combat internal corrosion and help extend 
the life of your engine.
Benefits of our flushing system:
•   Flushes your engine while the boat is in the water -there is no need 
to trailer your boat or hook up to a freshwater supply in order to flush 
and protect your engine.
•  Helps protect your engine from saltwater damage.
•  Helps prevent corrosion by removing salt deposits, leaving a  
protective corrosion inhibitor on all metal surfaces, including: Power-
steering and oil cooler, engine block, exhaust manifold and risers, 
thermostat housing, circulating and raw-water pumps.
•  Installs easily and operates smoothly.
Kit includes: 
0.95 litre of Neutra-Salt motor flushing concentrate, 2.85 litre reservoir 
with mounting bracket, eight feet of hose, brass sea-water inlet tee 
fitting, connecting hose for power-steering cooler, hose clamps, rocker 
switch, “Flush” switch, wiring harness with fuses, and solenoid.
How our flushing system works:
1.  To operate, simply engage the “Flush” switch by pushing and holding 
the dash-mounted switch for 45 seconds while running the engine 
at idle speed, making sure the engine has an adequate supply of sea 
water.
2.  Once the Flush switch is engaged, the Neutra-Salt concentrate  
solution will be injected into the cooling system, leaving a corrosion-
inhibiting coating on all metal surfaces, thereby neutralizing the salinity 
of incoming seawater.
3.  Before disengaging the Flush switch, you must turn off the engine. 
For best results, use the Neutra-Salt Engine Flushing System after 
every trip outing. Boat owners will typically get 10 to 15 flushes  
before a refill is needed.
Our exclusive Neutra-Salt Concentrate offers many benefits:
It flushes motors, dissolves salt and salt deposits, prevents rust and 
corrosion (includes a corrosion inhibitor which leaves a protective coat-
ing on all metal surfaces), extends the life of metal surfaces exposed 
to saltwater, and removes salt from engines, fishing equipment, scuba 
gear, boats, trailers, etc.
Neutra-Salt Concentrate 
Our exclusive Neutra-Salt Concentrate offers many benefits:
Flushes motors.
Dissolves salt and salt deposits.
Prevents rust and corrosion (includes a corrosion inhibitor which leaves 
a protective coating on all metal surfaces).
Extends the life of metal surfaces exposed to saltwater, and removes 
salt from engines, fishing equipment, scuba gear, boats, trailers, etc.
Part no Quantity
21687793 Quart/0.95 l
21687796 Gallon/3.8 l
Saltwater in 
NeutraSalt solution in  
Neutralized water out
Part no Description
21733731 Kit for engine with 1" or 1 1/4" water inlet hose
50 ENGINE ACCESSORIES – COOLING SYSTEM
Universal bracket
The front mounted universal bracket enables installation of extra equip-
ment such as cooling compressor or hydraulic pump. The kit includes 
bracket and fittings.
Part no Fits engines
3584501 D4, D6
3581049 MD2010A–D, MD2020A–D, MD2030A–D a) 
3583586 MD2040A, MD2040B, MD2040C, MD2040D, 
TAMD22, TMD22, MD22, D2-55 A, D2-55 B, D2-
55 C, D2-55 D, D2-55 E, D2-55F, D2-75 A, D2-75 
B, D2-75 C, D2-75F 
b) 
3884549 D1-20 A, D1-20 B, D1-20F, D1-30 A, D1-30 B, 
D1-30F 
3884550 D2-40 A, D2-40 B, D2-40F
3809865 D3
a) Pulley and drive belt ordered separately.For engines with S-drives, see infor-
mation in selection charts.
b) Pulley and drive belt ordered separately. Adapter kit, 3583805, needed with 
S-drive installations.
Extra pulleys
Auxiliary equipment driven by the drive belt on the crankshaft of the 
engine increase the load on the crankshaft. It is thus important that 
the axial location of the pulley on the crankshaft and the location of the 
equipment in relation to the crankshaft are suited to the extra power re-
quirements of the extra equipment. Maximum power supplied depends 
on the alignment of the belt, the belt type and the engine type.
Part no No. of grooves/
pulley
Outer 
mm
V-belt 
groove
Length, 
mm
861157 3 165 HC50 90
3809925 3 165 HC50 90
3809926 1 165 PK6 90
3581048 1 120 HC38 19
3581053 1 120 HC50 19
pOweR TAkeOFF 
An extra alternator and an efficient distributor greatly in-
crease your onboard power supply. And with the power take-
off your engine can power a cooling compressor, hydraulic 
pump etc.










