Waterous Floto-pump IL1330 Troubleshooting guide

Read through the safety and operating
instructions carefully before using your
Waterous Floto- pump.
Table of Contents
Important Information 1. . . . . . . . . . . . . . . . . . . . . . . . . .
Safety Instructions 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Warning Decals 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Operation 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Operating Features 5. . . . . . . . . . . . . . . . . . . . . . . .
Fuel Mixture 6. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Starting the Engine 6. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Stopping the Engine 6. . . . . . . . . . . . . . . . . . . . . . . . . . .
Compression Release Valve 7. . . . . . . . . . . . . . . . . . . .
Carburetor Adjustment 8. . . . . . . . . . . . . . . . . . . . . . . . .
General Operating Hints 9. . . . . . . . . . . . . . . . . . . . . . . .
Storage 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Ordering Repair Parts 9. . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 10. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump Repair Parts 11. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Float and Fuel System 12. . . . . . . . . . . . . . . . . . . . . . . .
Exhaust and Air Intake
Prior to 7/21/06 13. . . . . . . . . . . . . . . . . . . . . . . . . . .
After 7/21/06 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine (Starter and Ignition) 16. . . . . . . . . . . . . . . . . . .
Engine (Carburetor and Power Head) 17. . . . . . . . . . .
Warranty 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
All content in this instruction is property of the Waterous Company. Instructions subject to change without
Waterous Company 125 Hardman Avenue South, South St. Paul, Minnesota 55075 USA [phone]
Instructions subject to change without notice.
Visit us at www.waterousco.com
Form No.
F-2210
Issue Date
02/08/94
Rev. Date
10/01/07
Floto-pump E
Standard and High Pressure Models
Operation & Maintenance

IMPORTANT INFORMATION
Page 1 of 18
Before operating your new Floto-pump, read this instruction
booklet and view the video.
Waterous offers two types of Floto-Pumps:
the standard model and the high pressure
model. Although they have two different
performance levels and capacities, the
operating procedure is essentially the
same.The following instructions include
operation, maintenance and a list of repair
parts for your Floto-Pump. Before operating
your Floto-Pump, you need to get the proper
fire fighting training and protective clothing.
The protective clothing should include a
helmet, goggles, ear protection, a mask,
leather gloves, boots and a jacket and pants
made of a fire resistant, heavy cotton or
denim material.Contact your local fire
station, your Waterous dealer, or call us at
651-450-5000 to find out how you can get
the proper training and protective clothing.

SAFETY INSTRUCTIONS Page 2 of 18
The Floto Pump is designed and intended for use as portable firefighting equipment.
DANGER
!
Exhaust gas hazard. Can cause illness or death.
Do not run the engine in an enclosed area. Exhaust gases contain carbon monoxide, an odorless, deadly poison.
DANGER
!
Fire or explosion hazard. Can cause personal injury or death.
A fire or explosion may result if the following instructions are not followed:
1. DO NOT remove fuel tank cap nor fill fuel tank while engine is hot or running. (Allow engine to cool two minutes before
refueling.)
2. If gasoline is spilled, move machine away from the area of the spill and avoid creating any source of ignition until the
gasoline has evaporated.
3. DO NOT STORE, SPILL OR USE GASOLINE NEAR AN OPEN FLAME, or devices such as a stove, furnace or water
heater which utilize a pilot light, or devices which can create a spark.
4. Refuel outdoors or only in well ventilated areas.
5. DO NOT OPERATE ENGINE WITHOUT A MUFFLER. Inspect muffler periodically and replace, if necessary.
6. DO NOT operate the engine if air cleaner or cover directly over the carburetor air intake is removed.
7. DO NOT choke carburetor to stop the engine.
8. DO NOT check for spark with spark plug removed (use an approved tester).
9. DO NOT crank engine with spark plug removed. (If the engine floods, place throttle in “FAST” and crank until engine starts.)
10. DO NOT use the pump to pump flammable liquids.
WARNING
!
Death or serious personal injury might occur if proper operating procedures are not followed. The pump operator, as well
as individuals connecting supply or discharge hoses to the apparatus must be familiar with these pump operating
instructions as well as other operating instructions and manuals for the apparatus, water hydraulics and component
limitation.
WARNING
!
Pressure Hazard. May result in personal injury.
Prior to connection or removal of hoses, caps or other closures with pump intake or pump discharge connections, relieve
pressure by opening drains.
WARNING
!
Suction and high pressure hazard.
May cause injuries to the hands, fingers or severe cuts or abrasions to the skin.
Never insert hands or fingers into the intake or discharge openings while engine is running. Never spray high pressure water
at a person or animal.
WARNING
Pump overheat hazard.
May cause damage to the pump.
Do not run the pump dry for any extended period of time to prevent the pump from overheating.
IMPORTANT NOTES:
1. Ambient operating temperature range: -32_F to 118_F (-28_C to 48_C)
2. Maximum sound pressure level: 107 dBa @ 1.5 meters
3. Floto Pumps are designed to be carried by one or two people.

SAFETY INSTRUCTIONS
Page 3 of 18
WARNING
!
Scalding Water Hazard. May result in serious burns.
When operating the pump, be sure to open at least one discharge valve slightly to prevent the pump from
overheating. If the pump runs for a few minutes completely closed, it may heat the water enough to scald
someone when the valve is opened. Overheating can damage the packing, seals and other pump parts. If the
apparatus builder has installed a by-pass system or other provision designed to prevent overheating, opening
a discharge valve may be unnecessary.
WARNING
!
Accidental starting hazard. May cause personal injury to the hand, arm or feet.
Prevent accidental starting by removing the spark plug wire and grounding it when servicing the engine or equipment.
WARNING
!
Excessive speed notice. May cause personal injury.
Operating an engine at excessive high speeds increases the danger of personal injury. Do not tamper with the governor springs,
governor links or other parts which may cause an increase in governed engine speed. Do not tamper with the engine speed
selected by the original equipment manufacturer.
WARNING
!
Moving or rotating parts hazard. May cause personal injury.
Always keep hands and feet clear of moving or rotating parts to prevent injury.
WARNING
!
High temperature components. May cause severe burns.
Do not touch hot mufflers, cylinders or fins as contact may cause burns.
WARNING
!
Kickback notice. May cause injury to hand or arm.
To prevent hand or arm injury, pull the cord slowly until resistance is felt then pull the starter cord rapidly to avoid kickback.
WARNING
!
DO NOT strike the flywheel with a hammer or hard object as this may cause the flywheel to shatter in operation. Use correct
tools to service the engine.
CAUTION
!
Loud noise levels. May cause temporary or permanent hearing loss.
Always wear protective hearing equipment (custom molded ear plugs, sound-reducing head gear) when operating
the engine.

WARNING DECALS Page 4 of 18
Warning - Carbon Monoxide
Warning - Hot Surface
Warning - Hearing Protection Required IL2391

OPERATIONPage 5 of 18
Throttle Float
Air Intake
Recoil Starter
Fuel Tank
Muffler
On/Off Switch
Discharge
Throttle Arm
IL2394
Cap Vent
Choke Lever
(Shown in Open Position)
Pump Operating Features

OPERATION Page 6 of 18
Preparation Before Operation
Symbols
This safety alert symbol indicates that this
message involves personal safety. Words
danger, warning and caution indicated de‐
gree of hazard. Death, personal injury and/‐
or property damage may occur unless in‐
structions are followed carefully.
You are not ready to operate this engine if
you have not read and understood the pre‐
vious safety items. Read this entire owner/‐
operator manual and the operating instruc‐
tions of the equipment this engine powers.
Fuel Mixture
Always use fresh fuel in the tank. In a separate, clean
container thoroughly mix National Marine Manufacturers
Association (NMMA), TC-W3Routboard oil with regular
grade 87 octane (minimum) unleaded fuel.
Fuel:Oil Mix Ratio, 24:1
Fuel Oil Fuel Oil
1 Gal. 5.3 Fl. Oz. 1 Liter 42 mL
3 Gal. 16 Fl. Oz. 10 Liters 417 mL
5 Gal. 27 Fl. Oz. 20 Liters 833 mL
CAUTION
Oil and fuel separation.
May result in engine damage.
Do not use gasoline containing more than 10%
alcohol or the oil may separate from the fuel.
WARNING
!
Fire or explosion hazard.
May result in personal injury or death.
Do not refuel the Floto-Pump with the engine run‐
ning. Also make sure the muffler is cool before
refueling to prevent an accidental fire or explosion.
Starting The Engine
1. Connect discharge hose to pump and lay hose out so
it will be free of kinks and twists.
2. Make sure nozzle is closed.
NOTE: The pressurized discharge hose will hold
the running Floto Pump out from shore, but a
rope may be needed to prevent wind or current
from swinging it back.
3. Open vent in fuel tank cap by turning it counterclock‐
wise.
4. Move ignition switch to RUN (on) and close choke by
moving choke lever in direction of arrow.
5. Grasp lifting handle on top of engine with one hand
and pull starter handle with other hand.
NOTE: The throttle is operated by a float con‐
nected to the throttle arm and is automatically
held in idle position until unit is placed in the
water.
CAUTION!
“Kick back” notice.
May result in possible injury.
To prevent hand or arm injury, pull the cord slowly
until resistance is felt, then pull the start cord rapidly
to avoid kick back.
When the engine starts, open the choke by moving
choke lever toward engine.
CAUTION
Out of water operation.
May result in Floto-Pump damage.
Throttle may be opened manually for short “bursts”
by lifting throttle control float assembly, but unit may
be damaged by prolonged high speed operation out
of water.
1. When engine is running smoothly, slowly place pump
in water. (The throttle will automatically open wide.)
NOTE: If you set the pump in the water too fast
the engine may stall if it is cold or the carburetor
is not adjusted properly.
2. Pump speed and capacity will depend upon the type
of nozzle and hose used.
WARNING
!
Hot temperature muffler.
May result in personal injury (burns).
Do not touch the muffler while the engine is running
or shortly after the engine was running. To lift the
Floto-Pump, use the hand on the top of the starter.
Stopping The Engine
1. Turn ignition switch to STOP (off) position.
NOTE: The pump may be removed from water
before stopping the engine.
2. Before transporting the pump, close the fuel tank vent
by turning it clockwise.

OPERATIONPage 7 of 18
Compression Release Valve
NOTE: This Floto Pump is equipped with a com‐
pression release valve to aid in starting the en‐
gine. The compression release device is located
near the spark plug. The function of the com‐
pression release is to reduce the engine com‐
pression so that less effort is required to operate
the pull starter. The compression release is used
as follows:
CAUTION!
Hot temperature components.
May result in personal injury.
The compression release, muffler and engine sur‐
faces will become hot during operation. Use a tool
and/or gloves to prevent burns while using the
compression release.
1. Prior to starting the engine, engage the compression
release by depressing the black cap on top of the
compression release valve.
2. Start the engine by following the normal start proce‐
dure. (It may be necessary to ensure that the black
cap remains depressed between each pull on the
starter rope.)
3. Once engine starts, the compression release should
automatically close. If a whistling sound is heard, that
indicates that the compression release has not closed.
Close the compression release by pulling out on the
black cap.
IL2131
Compression Release Valve

OPERATION Page 8 of 18
Carburetor Adjustment
High Speed
Low Speed
Idle Needle
Idle Needle
The carburetor is factory adjusted, but may require
readjustment, especially for cold weather operation or
high altitudes.
If the fuel mixture is too lean, a cold engine may stall
under a load. If the engine stalls as soon as the throttle
opens, the ``idle mixture'' may be too lean. If the engine
speeds up when the throttle opens, but stalls when the
pump primes, then the ``high speed'' adjustment is prob‐
ably too lean.
1. Turn both adjustment needles clockwise until com‐
pletely closed.
CAUTION
Carburetor needle adjustment
may result in seat damage.
Do not force adjustment needles tightly closed or the
seat could be damaged.
2. Open both needles by turning counterclockwise one
turn. This will be a rich setting and operation under a
load will determine the best setting.
3. Adjust the low speed idle needle first, and accelerate.
If the engine bogs down or accelerates slowly, turn the
low speed idle needle clockwise until performance is
acceptable. If the engine stalls on acceleration, turn
the low speed idle needle counterclockwise until per‐
formance is satisfactory. The average low speed idle
needle adjustment is one turn open.
4. Adjust the high speed needle next. Turn the high
speed needle clockwise until engine runs smoothly.
DO NOT go any leaner than necessary on the high
speed adjustment as piston seizure can occur at high
speed. The average high speed needle adjustment is
one turn to open. This will vary according to outside
temperature. Low temperatures generally require
richer settings. (Adjust screw counterclockwise.)
5. If the engine runs too fast at idle speed, turn the idle
stop screw counterclockwise until the desired idling
speed is obtained. To increase idling speed, turn the
idle stop screw clockwise.

OPERATIONPage 9 of 18
General Operating Hints
1. When the pump is placed in the water with the hose
empty, air will be expelled into the hose and the pump
will prime quickly. If the hose is partially full of water,
or kinked near the pump discharge, the pump may
require 30 seconds or more to prime.
2. Ideally, the Floto Pump should not be operated in less
than six inches of water. If the water is shallow, or if
the water level goes low enough to permit the pump to
rest on the bottom, sand or other foreign material
entering the pump intake can cause the pump to
seize. If this happens, free the pump with one of the
following methods.
WARNING
!
Accidental starting.
May cause personal injury.
Before attempting to free the pump, disconnect the
spark plug wire from the engine to prevent accidental
engine start up.
a. Remove starter and turn engine counterclock‐
wise until it turns freely.
b. Remove screws which attach screen to float.
With a suitable wrench, turn impeller nut clock‐
wise (viewed from bottom of pump) until it turns
freely. Reinstall intake screen.
c. Remove intake screen as directed above.
Remove bolts which attach the pump to float.
Disconnect and plug fuel line at carburetor and
lift engine and pump assembly out of float.
Remove four self-locking nuts and plain wash‐
ers, and lift off lower volute. Thoroughly clean
impeller and turn it to make sure that it is free. If
it does not turn freely, contact your Waterous
dealer or call us at 651-450-5200. Reassemble
pump.
Storage
Change the fuel in the tank at regular intervals. If you
are going to store the pump for longer than two months,
the following steps should be taken.
1. Do not run engine to remove the fuel left in the carbu‐
retor. Drain the carburetor by removing the fuel
strainer cover.
2. Remove the spark plug and lubricate cylinder walls
with three or four squirts of BA- TCW or NMMA TC- ‐
Wll outboard oil.
3. Crank engine over once or twice to circulate the oil.
Replace the spark plug.
4. If the engine is to be stored in an extremely damp
area, remove the crankcase cover and lubricate the
upper and lower main bearings in both ends of the
connecting rod.
Ordering Repair Parts
Repair parts for your Floto-Pump are available from a
Waterous dealer or directly from Waterous.
The following pages list the repair parts for the Standard
Floto, High Pressure Floto and the engine repair parts.
Contact your Waterous dealer, or call a Waterous service
specialist at 651-450-5200 with any questions.

TROUBLESHOOTING Page 10 of 18
Problem Cause What To Do
1. Engine fails to start.
No fuel in tank. Fill tank.
Ignition switch off.
Fuel tank vent closed.
Turn ignition switch on.
Open fuel tank vent.
Fuel line or fuel tank screen clogged. Clean fuel line and screen.
Flooded.
Hold throttle in fast position and crank engine or close
carburetor main adjustment needle and crank until
engine starts. Then turn needle to 1 turn open.
Spark plug shorted or fouled. Install new spark plug.
Spark plug broken (cracked porcelain or
electrodes broken). Replace spark plug.
Ignition lead wire shorted, broken or discon‐
nected from spark plug. Replace lead wire or attach to spark plug.
Ignition inoperative (no spark from lead wire. Contact factory or your nearest authorized dealer.
2. Engine hard to start.
Water in gasoline or stale fuel mixture. Drain entire fuel system and refill with fresh fuel.
Too much oil in fuel mixture. Drain and refill with correct mixture.
Engine over or under choked.
If flooded by over choking, proceed according to
instructions in previous section. If under choked,
move choke lever to closed position and crank 2 or 3
times.
Carburetor out of adjustment. See ``Operating Instructions'' under ``Carburetor Ad‐
justment.''
Gasket leaks (carburetor or reed plate gas‐
kets). Replace gaskets.
Weak spark at lead wire. Contact the factory or your nearest authorized dealer.
3. Engine misses. Dirt in fuel line or carburetor. Remove and clean.
4. Engine misses.
Carburetor improperly adjusted. See ``Operating Instructions'' under ``Carburetor Ad‐
justment.''
Spark plug fouled, broken or incorrect gap
setting. Clean and replace spark plug; set gap at .030.
Weak or intermittent spark at lead wire. Contact the factory or your nearest authorized dealer.
5. Engine lacks power.
Air cleaner clogged. Clean air cleaner.
Carburetor out of adjustment. See ``Operating Instructions'' under ``Carburetor Ad‐
justment.''
Muffler clogged. Clean carbon from muffler.
Clogged exhaust ports.
Remove muffler, rotate engine until the piston is at
bottom of cylinder. With a wooden scraper or blunt
tool, remove all carbon from exhaust ports. Be careful
not to scratch or damage piston or cylinder walls.
Blow any loose carbon with compressed air. Start
engine and run briefly to remove all carbon, then
install muffler.
Poor compression. Contact the factory or your nearest authorized dealer.
6. Engine overheats. Insufficient oil in fuel mixture. Mix fuel as shown in starting instructions.
Air flow obstructed. Clean flywheel, cylinder fins and screen.
7. Engine noisy or
knocking.
Loose flywheel. Tighten flywheel nut.
Spark plug is incorrect heat range. Replace plug specified for engine.
Worn bearings, piston rings or cylinder walls. Contact the factory or your nearest authorized dealer.
Bent fan housing. Remove fan housing and straighten bent portion.
8. Engine stalls under
load.
Carburetor main adjustment too lean. See ``Operating Instructions'' under ``Carburetor Ad‐
justment.''
Engine overheats. See number 5.

PUMP REPAIR PARTSPage 11 of 18
Refer to the following pages:
Float and Fuel system 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Exhaust and Air Intake
Prior to 7/21/06 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
After 7/21/06 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Pump 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine (Starter and Ignition) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Engine (Carburetor and Power Head) 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

FLOAT AND FUEL SYSTEM Page 12 of 18
REF. DESCRIPTION
NO.
8 Float
13 Self-locking nut, 3/8-16
14 Plain washer, 3/8 in.
15 Intake screen
26 Fuel line
31 Fuel tank cap
38 Hex hd screw, 3/8-16 x 2-3/4 in.
41 Fuel line filter
42 Lock washer, internal tooth, 1/4 in.
49 RUN-ST OP decal
50 Fuel mix decal
51 Name plate decal
(includes pump serial number)
REF. DESCRIPTION
NO.
77 Hearing protection warning decal
79 Patent decal
80 Folding spanner wrench
90 Fuel tank subassembly
(includes ref no. 41, 50 & 77)
128 Hex hd screw, 1/4-20 x 1/2 in.
134 Carbon monoxide warning label
148 Plain washer, 1/4 in.
165 Rubber bushing
166 Pan hd screw, 1/4-20 x 2-1/2 in.
169 Inlet chamber seal
175 Compression release decal
176 Hot warning decal
177 CE marking decal

EXHAUST AND AIR INTAKE (PRIOR TO 7/21/06)Page 13 of 18
REF. DESCRIPTION
NO.
1 Air intake stack cap
2 Wing nut, No. 10-32
3 Lock washer, internal tooth, no. 10
4 Plain washer, 3/16 in.
6 Lifting handle
7 Engine
23 Throttle control float
25 Throttle control arm
28 Socket hd screw, no. 10-32 x 3/8 in.
29 Socket hd screw, 1/4-20 x 2-1/2 in.
35 Self-locking nut, no. 10-24
REF. DESCRIPTION
NO.
42 Lock washer, internal tooth, 1/4 in.
44 Muffler
45 Exhaust adapter
48 Choke decal (prior to 05/19/03)
Choke plate (after 05/19/03)
53 U-bolt clamp
58 Self-locking nut, 1/4-20
65 Air intake stack
82 Muffler bracket
83 Hex hd screw, 5/16 x 1-1/4 in.
84 Lock plate
135 Hex head screw, 1/4-20 x 5/8 in.
153 Lock washer, 1/4 in.
164 Conduit locknut, 1-1/4 in.
170 Fill hd screw, no. 10-24 x 9/16 in.

EXHAUST AND AIR INTAKE (AFTER 7/21/06) Page 14 of 18
REF. DESCRIPTION
NO.
1 Air intake cover
3 Lock washer, internal tooth, no. 10
6 Lifting handle
7 Engine
21 Socket hd screw, 5/16-18 x 1-1/2 in.
23 Throttle control float
25 Throttle control arm
28 Socket hd screw, no. 10-32 x 3/8 in. (use
Loctite #242 (Blue) on screws
29 Socket hd screw, 1/4-20 x 2-1/2 in.
35 Self-locking nut, no. 10-24
REF. DESCRIPTION
NO.
42 Lock washer, internal tooth, 1/4 in.
44 Muffler
45 Exhaust adapter
65 Air intake base
82 Muffler bracket
128 Hex hd screw, 1/4-20 x 1/2 in.
135 Hex head screw, 1/4-20 x 5/8 in.
153 Lock washer, 1/4 in.
170 Fill hd screw, no. 10-24 x 9/16 in.
178 Pipe nipple, 1-1/4 NPT x 5 in.
179 Air intake screen
(Use Loctite #242 (Blue)
on screws)

PUMP
Page 15 of 18
STANDARD FLOTO
REF. DESCRIPTION
NO.
7 Engine
12 Hex hd screw, 3/8-16 x 1-1/2 in.
13 Self-locking nut, 3/8-16
14 Plain washer, 3/8 in.
16 Mechanical seal
17 Self-locking nut, 9/16-18
18 Impeller
19 Dowel pin, SS, 5/16-18 x 1-1/2 in.
20 Body - upper volute
21 Socket hd screw, 5/16-18 x 1-1/2 in.
22 Body - lower volute
36 Discharge nipple, 1-1/2 NPSH x 11 in., or
1-1/2 BSP x 11 in., or 1-1/2 NPT x 8-7/8
in. (1-1/2 NPT x 8-7/8 in. nipple requires
REF. NO. 37 nozzle).
37 Discharge nozzle, 1-1/2 NH (not used
with REF NO. 36 NPSH or BSD
discharge nozzles)
46 O-ring, 7-14 x 7-1/2 in.
131 Woodruff key
HIGH PRESSURE FLOTO
REF. DESCRIPTION
NO.
7 Engine
12 Hex hd screw, 3/8-16 x 1-1/2 in.
13 Self-locking nut, 3/8-16
14 Plain washer, 3/8 in.
16 Mechanical seal
17 Self-locking nut, 9/16-18
18 Impeller subassembly
(includes REF. NO. 63)
19 Dowel pin, SS, 5/16 x 1-1/2 in.
20 Body - upper volute
21 Socket hd screw, 5/16-18 x 1-1/2 in.
22 Body - lower volute subassembly
(includes REF. NO. 64)
36 Pipe nipple, 1 NPT x 7-3/4 in.
37 Discharge nozzle, 1-1/2 NH, 1-1/2 NPSH
or 1-1/2 BSP
46 O-ring, 7-14 x 7-1/2 in.
63 Impeller bushing
64 Volute bushing
131 Woodruff key
Standard Floto High Pressure Floto

ENGINE - STARTER AND IGNITION Page 16 of 18
REF. DESCRIPTION
NO.
85 Cylinder cover
86 Fan housing
87 Support plate
88 Coil wedge spring
89 Coil with sparkie
91 Ignition switch
93 Starter
95 Flywheel key
98 Magneto end seal
99 Stator plate assembly
127 Hex hd cap screw with lockwasher,
1/4-20 x 5/8 in.
128 Hex hd cap screw with lockwasher,
1/4-20 x 1/2 in.
REF. DESCRIPTION
NO.
135 Hex hd screw, 1/4-20 x 5/8 in.
136 Hex nut, 7/16-20
138 Starter cup
139 Flywheel
141 Ground lead
142 Hex slot screw with lockwasher,
1/4-20 x 11/16 in.
144 Insulator
148 Plain washer, 1/4 in.
156 Pan hd scew, 6-32 x 3/8 in.
157 Insulator screw
159 Self-locking nut, no. 6-32
167 Atom module assembly
171 Power head gasket and seal set
172 Spacer

ENGINE - CARBURETOR AND POWER HEAD
Page 17 of 18
REF. DESCRIPTION
NO.
56 Complete carburetor
57 Carburetor gasket
69 Manifold gasket
70 Transfer port cover gasket
71 Carburetor stud
74 Spark plug
(Champion L-86C or AC R44 F)
75 Carburetor adapter elbow
76 Manifold
81 Head bolt stud
94 Carburetor repair parts kit
101 Fuel strainer cover
102 Main adjustment screw washer
103 Throttle shaft and lever
104 Bearing cage gasket
105 Ball bearing
106 Crankshaft
107 Connecting rod with cap
108 Retaining ring
109 Piston
110 Piston pin
111 Piston ring set
112 Cylinder head
113 Head gasket, .032 in. thick
114 Head gasket, .062 in. thick
115 Cylinder w/seal
REF. DESCRIPTION
NO.
116 Reed
117 Drive end seal
118 Crankcase cover gasket
119 Transfer port cover
120 Connecting rod screw
121 Crankpin roller set
123 Hex hd screw with lockwasher,
1/4-20 x 3/4 in.
124 Hex hd screw with lockwasher,
1/4-20 x 7/8 in.
125 Hex hd screw with lockwasher,
1/4-20 x 1-1/8 in.
130 Hex nut, 1/4-20
149 Crankcase cover
150 Reed stop
151 Rnd hd screw with lockwasher,
no. 6-32 x 5/16 in.
152 Reed plate (includes 116, 150 & 151)
153 Spring lockwasher, 1/4 in.
154 Socket hd cap screw, 1/4-20 x 11/16
155 Plain washer, 1/4 in.
160 Fuel strainer screen
161 Fuel strainer cover gasket
162 Hex hd screw, 6-32 x 7/16
171 Power head gasket and seal set
173 Compression release valve
174 Washer

WARRANTY Page 18 of 18
CONDITIONAL WARRANTY POLICY
WATEROUS warrants, to the original Buyer only, that products and parts manufactured by WATEROUS will be free from
defects in material and workmanship under normal use and service for a period of five (5) years from the date the product
is first placed in service, or five and one-half (5-1/2) years from the date of shipment by Waterous, whichever period shall
be the first to expire; provided the Buyer notifies WATEROUS, in writing, of the defect in said product within the warranty
period, and said product is found by WATEROUS to be nonconforming with the aforesaid warranty. When required in writing
by WATEROUS, defective products must be promptly returned by Buyer to WATEROUS at WATEROUS' plant at South St.
Paul, Minnesota, or at such other place as may be specified by WATEROUS, with transportation and other charges prepaid.
A Returned Goods Authorization (RGA) is required for all products and parts and may be requested by phone, fax or mail.
The aforesaid warranty excludes any responsibility or liability of WATEROUS for:
(a) damages or defects due to accident, abuse, misuse, abnormal operating conditions, negligence, accidental causes, or im‐
proper maintenance, or attributable to written specifications or instructions furnished by Buyer;
(b) defects in products manufactured by others and furnished by WATEROUS hereunder, it being understood and agreed
by the parties that the only warranty provided for such products shall be the warranty provided by the manufacturer thereof
which, if assignable, WATEROUS will assign to Buyer, if requested by Buyer;
(c) any product or part, altered, modified, serviced or repaired other than by WATEROUS, without its prior written consent;
and
(d) the cost of dismantling, removing, transporting, storing , or insuring the defective product or part and the cost of rein‐
stallation.
(e) normal wear items (packing, strainers, filters, light bulbs, anodes, intake screens, etc.).
This warranty is subject to WATEROUS' Conditions of Sale (Waterous Company form number F-2190) as currently in effect
all of which are herein incorporated and by this reference made a part hereof.
All other warranties are excluded, whether express or implied by operation of law or otherwise, including all
implied warranties of merchantability or fitness for purpose. WATEROUS shall not be liable for consequential
or incidental damages directly or indirectly arising or resulting from the breach of any of the terms of this lim‐
ited warranty or from the sale, handling, or used of any WATEROUS product or part. WATEROUS' liability here‐
under, either for breach of warranty or for negligence, is expressly limited at WATEROUS' option:
(A) to the replacement at the agreed point of delivery of any product or part, which upon inspection by WATEROUS or its duly
authorized representative, is found not to conform to the limited warranty set forth above, or
(B) to the repair of such product or part, or
(C) to the refund or crediting to buyer of the net sales price of the defective product or part.
Buyer's remedies contained herein are exclusive of any other remedy otherwise available to Buyer.

WATEROUS COMPANY •125 HARDMAN AVENUE SOUTH
SOUTH ST. PAUL, MINNESOTA 55075-2456 U.S.A.
Phone: [phone] •FAX: [phone]