Manufacturers of Quality
Sewer & Drain Cleaning
Equipment since 1957
(800) 328-8170
Factory Direct Customer Service
M –F 7am – 5pm CST
Competent • Polite • Clear
www.MyTana.com
746 Selby Ave • St. Paul, MN 55104
fax: (651) 222-1739
User Guide for
M20T, M20 or M30 Jetters
M20T
M20
shown with
optional hose
and reel
M30
shown with
optional hose
and reel
102121
PG 2 MyTana M20T / M20 / M30 JETTER User Manual
IMPORTANT NOTICE
FOR YOUR SAFETY, AND TO ENABLE MAXIMUM USE AND EFFECTIVENESS
OF YOUR EQUIPMENT, READ AND UNDERSTAND THIS INSTRUCTION MANUAL
ENTIRELY BEFORE USING YOUR HIGHPRESSURE WATER JETTING UNIT!
FAILURE TO FOLLOW INSTRUCTIONS AND REGULATIONS CONTAINED IN
THIS MANUAL CAN RESULT IN SERIOUS INJURY TO THE OPERATOR AND/OR TO
ANYONE IN CLOSE PROXIMITY TO THE WORK AREA.
The Jetting Process
Water Jetting—also know as sewer jetting or hydro-jetting—uses a combination of water pressure and
water ow through a hose and nozzle to clean debris out of drain and/or sewer lines. Water jetting is
used to wash out clogs, potential blockages or to simply clean the walls of drains and sewer lines to
prevent future blockages.
uSewer jetting diers from normal pressure washing in two ways:
• Sewer jet nozzles direct the ow of water back toward the operator at a 20 to 45 degree angle. This backward
stream propels the sewer nozzle and accompanying hose forward into the sewer line and also cleans the walls
of the pipe.
• Water pumps on sewer jetting equipment are modied to allow pulsation of water through the hose to the
nozzle. This pulsation creates a vibration or “wiggle” in the jetting hose that allows the hose to move through
a drain or sewer line with little resistance. Pulsating also reduces pressure and/or ow of the water, so most
pumps are equipped to turn pulsation on and o at will.
uSewer jetting diers from traditional “snaking” in that jetting is most eectively done from LOW end of a
clogged drain or sewer, but is also eective from the high-side.
• Traditionally, clogged pipes were opened from the high side using the aid of gravity and the downward ow of
water to clean. In the water jetting process, cleaning from the low side allows the operator to both see debris
coming downward and to take advantage of the water pressure and ow that is pointing toward the low end if
cleaning from the low side. NOTE that it is usually not practical or even possible to clean from the low side of a
drain or sewer line. Jetting is still eective from the high side.
Components of water jet machines: Water pump; hose reel; various sub-components that protect the pump and
the operator; various nozzles for various cleaning applications and situations. Larger jetters use a water storage tank
for additional water supply.
PG 3 MyTana M20T / M20 / M30 JETTER User Manual
Pumps Remove “shipping” plug on top side of
pumps and replace with vented plug. This is very
important for the proper operation of the pumps.
Do not store or run the pumps on its side or at a
sharp angle, since oil can run out of the vent plug.
Keep bystanders or unauthorized persons away
Insist they keep a safe distance before operating
high pressure equipment!
Environment
• Use caution in conned or wet areas. Since you will
often be working directly through clean outs or
openings into sewers (non-trapped openings) make
sure that there is adequate ventilation into the work
area.
• Do not operate machine in areas where
ammable gases or liquids are present.
Always insert hose and nozzle into pipe opening and hold
onto hose before turning the machine on.
Changing hose and/or nozzle ALWAYS turn machine o
when changing nozzles, hoses or reels.
Never hold onto nozzle or point it at anyone with
machine turned on. High pressure water streams can
cause serious bodily harm.
Job Completion Always turn machine o before
disconnecting water supply. Running a water pump “dry”
will seriously damage the water pump.
Maintenance
• Keep machine clean and dry to maximize performance
and longevity.
• Follow maintenance schedules such as changing oil,
check for weak spots, slices or cuts in hose, keep inlet
screen clean, replace nozzles when worn.
• Keep antifreeze in hose and pump in freezing
temperatures.
• Additional maintenance details follow in this manual.
Common Sense Don’t operate equipment under the
inuence of drugs, alcohol or if taking medication that
alters alertness.
Electric machines
• Avoid electric shock! Before using your electric
machine, make sure that a properly grounded
outlet (three hole) is available. If one is not
available, use a three prong adapter making sure
to connect the green pigtail from the adapter to a
sure ground, such as a steel water pipe.
Never run your jetting machine without a
properly grounded electrical supply and
hookup! This is electric equipment in a wet
environment. Every precaution should be taken
when water and electricity are in close proximity.
• Use 12 gauge or heavier extension cords to power
the machine.
• Never spray motor or electrical connections directly
with a water stream.
• Avoid getting the electrical connections and
components wet.
Gas Jetters
• Always operate machine in well ventilated environ-
ment. Exhaust fumes can be potentially lethal to the
operator.
• Do not allow ame or sparks in the area of operation.
• Do not refuel engine when it is hot. Spilled gasoline
or gas vapor can ignite if it comes in contact with hot
engine.
• Be careful not to touch engine block or the manifold/
muer during operation. These areas will become
very hot during normal operation.
• Do not lay machine on its side or tilt it backwards
(other than wheeling it from place to place). This can
cause gas to leak out the cap vent.
uBecause the gas jetter is tilted back about 30°
for transport, do not ll the gas tank all the way.
Leave several inches of space between the gas
and the top of the tank to prevent gas from
leaking out.
Gas jetters that are ordered with an electric starter
package will have a battery attached. Batteries contain
sulfuric acid. Avoid direct skin contact. Wear protec-
tive gloves, clothing and eyewear when handling your
battery!
Safety First! Instructions and Precautions
Vented
Plug
PG 4 MyTana M20T / M20 / M30 JETTER User Manual
Model Details
Comparisons and
applications
Hoses and Nozzles
MODEL M20T M20 M30
MOTOR 2 hp electric 13 hp gas
PUMP Triplex 2.11 GPM Triplex 4.6 GPM
PRESSURE 1500 PSI 3000 PSI
HOSE
(see chart below)
not incl. with base only
machine purchase
1/8" x 50'
(Trap Hose)
1/8" x 50'
1/4" x 115'
1/8" x 75'
3/8" x 200'
PIPE DIA. 1½" to 2" 1½" to 4" 1½" to 6"
USED FOR
CLEANING
Floor Drains
Sink lines
Tubs and Showers
Floor Drains
Sewer Lines
Small mains
HOSE TYPE Trap Hose Small Jetter Hose Medium Jetter Hose
Hose I.D. 1/8” 1/4” 3/8"
Hose O.D. 5/16" 1/2" 5/8"
Nozzle Type NOZZLE PART #
Blind Thrust:
4 rear jets TN1-B MN1-B LN1-B
Cornering:
3 rear, 1 side jet TN2 MN2 LN2
Penetrating:
1 forward, 3 rear jets TN3 MN3 LN3
MyTana carries many more nozzles for dierent applications.
See our catalog or MyTana.com for details!
Used for Pipe Size 1 ½" - 3" 1 ½”-4" 4”-6”
General
Applications
• General maintenance • Sharp turns, traps
• Ice, thick grease and/or sludge • Thorough cleaning of surface
Your jetter works via the proper blend of water pressure
and water volume: the more water that has to pass through
the restriction of a hose, the
less pressure you will have at
the nozzle end. To optimize
cleaning power, use the
shortest hose with the largest
inside diameter that you can.
The orices (holes) in the
nozzle aect pressure. Over
time, water pressure will
wear the orices in your
nozzle resulting in pressure
drop and reduced cleaning
eectiveness. Nozzles need to
be replaced as normal wear
occurs.
This chart is to provide a
general guideline. Each job
is dierent and will be best
served by your experience.
PG 5 MyTana M20T / M20 / M30 JETTER User Manual
Pumps
Periodically change oil in pumps.
• Change oil after rst 30 hours of use for “break-in”
• After that, change every six months or at approximately
250 hours of use
• Recommended oil: General Pump (GP) Brand SAE 30W
Non-detergent
Do NOT run pump without water in it. This can damage
the cylinder walls, warp or crack the pump casing.
Do not use water more than 145°. This will damage seals.
Your pump is equipped with a thermal relief valve. However,
to optimize pump protection you should still avoid water (or
any pumped uid) that is too hot on the inlet side.
NEVER run pump if there is ice in pump or outlet hose.
To avoid freezing in the pump, run antifreeze through
pump and hose(s) if stored overnight in freezing tempera-
ture. (The same bottle of antifreeze can be recycled
numerous times. If it becomes discolored or diluted,
replace with new.)
uBest Care: If the jetting unit will be unused for a period
of time (more than several days), even in warm temper-
atures, we recommend running antifreeze through
pump and hose before storage. Antifreeze greatly
reduces the chance of rust, mineral deposits and other
contaminants damaging the pump during storage.
Additional Components
Thermal Relief Valve
As stated earlier, water temperatures in excess of 145° can
damage the pump seals. The thermal relief valve provides
protection when the pump goes into “bypass” meaning the
pump is running but no water is being pushed
through the hose.
Pulse-abler
The stem and handle extending from one cylinder
of each water pump enables pulsation of the water
stream through the hose and nozzle. By turning the
pulse-abler handle clockwise (or right), you temporarily
disable one valve of the pump. This creates pulsation
or vibration in the hose, allowing the hose to “wiggle”
through tight bends quickly and easily. Turn the pulse-
abler handle left again to “enable” the pump again.
uDisabling a valve also reduces cleaning
power, so use the pulsation only as needed
to arrive at an obstruction or to retrieve
a stuck hose.
Pressure Regulator/Unloader
The regulator/unloader both regulates the pressure and
relieves pressure on the pump while in bypass. The regulator
knob is located at the pump. It allows you to adjust pressure
during operation.
Regulation is needed because greater pressure requires more
power (meaning amperage in electric models) from the power
source. Therefore you should start the electric units with as
little pressure as possible (on 15Amp circuits, back o to 1K -
1.2K PSI). This reduces the load on the motors at start up and
avoids tripping circuit breakers.
After startup, gradually increase pressure to the levels below.
uOn GAS powered units, the speed of the motor directly
aects the amount of pressure. Adjust to a constant
motor speed before adjusting pressure regulator.
Recommended Pressure Settings:
M20T
M20 2 HP Electric 1500 PSI
(1500 max PSI )
M30 13 HP
Gasoline
3000 PSI (3000
max psi)
Water Inlet and Filter
The water inlet has a lter to prevent debris from running
through your pump.
• Run water through the source hose into an open drain
or bucket to ush debris out of faucet and hose — make
sure the water is running clean and clear BEFORE
attaching source hose to the pump
• Recheck the inlet lter before each use to make sure
there is no obstruction.
Unloader (pressure regulator)
Components Diagram
Electric models
Garden hose
hook-up
Water inlet lter
Pulse-abler
valve
Pressure gauge
Vented
Plug
Thermal
Relief Valve
(electric)
Thermal Relief Valve
location on gas models -
(not shown in this image) Trap jet control–
1/4 turn switch
PG 6 MyTana M20T / M20 / M30 JETTER User Manual
Operation Instructions
1. Attach garden hose (minimum of 5/8” diameter) to
water faucet. Run water through the hose into an open
drain or bucket to ush debris out of faucet & hose
before connecting to pump. Shut water
o again when water runs clear.
2. Attach other end (male end) of garden hose to water
inlet valve at pump.
3. Connect jetter hose to reel
4. Attach nozzle to end of hose. Finger tighten, do not
over tighten.
5. Mark the hose approximately 10 feet back from
nozzle with electrical tape. Use this tape as a marker
to shut o machine before retrieving all the line out
of the drain pipe.
6. Open water intake.
7. Open water faucet again to prime pump. An equal
amount of water should pass through the orices of
the nozzle.
8. Push jetter hose into drain up to the marker when
possible (minimally several feet).
9. Make sure your extension cord is plugged into a
properly grounded 110 volt receptacle.
10. Start Motor/Engine
Electric Jetters
• Make sure motor is plugged into a properly
grounded outlet
• Start jetter motor by ipping switch into the
“on” position.
Gasoline Engine w/ Automatic Choke
• Turn the fuel valve to the “on” position
(by moving lever to the right)
• Turn key to “start” and start engine
• Move throttle to desired speed
Since your gas engine speed is variable, be aware that
low rpm equals low pressure at the pump. Conversely,
high rpm equals high pressure.
For normal operation, do not exceed the recommended
3000 psi (with the larger 3/8” hose).
When running smaller trap (1/8”) hose, manually adjust
pressure setting lower to maximum of 1500 PSI.
11. Adjust pressure with pressure regulator knob, turning
right to increase pressure, left to decrease. Note: See
recommended max. pressure settings listed on page 5.
12. Start jetting, using pulsation only if needed to promote
forward motion of nozzle and hose.
Pre Operation Checklist
• Check for adequate
water supply. Use no
smaller than 5/8” garden
hose for supply to pump
• Make sure water inlet
lter is clean.
• Check ground fault
interrupter on electric
models. Test and reset.
• Check uid levels: Oil in
pumps, oil & gas in gas
powered unit.
• Select nozzle and make
sure orices are not
blocked or worn to
excess
• Check hose for wear or
kinks
• Check hose reel and all
connections
PG 7 MyTana M20T / M20 / M30 JETTER User Manual
Care Tips
Never let pump run dry!! Pump cavitation can occur in
only a few seconds of running dry.
Avoid running anything abrasive through pump
Abrasive materials will damage pump components,
resulting in total malfunction or, minimally, loss of pressure
capability.
Anti Freeze Procedure If you know there will be a period
of several days when the jetter will be idle OR if the jetter
is stored in potentially freezing weather, make sure to run
antifreeze into pump and hose as part of your shut down
procedure. Simply insert a short length of garden hose into
a gallon of antifreeze, turn on pump an run until you see
antifreeze coming out of the nozzle end of the hose. At next
use of jetter, you can recover most of that antifreeze when
you hook up to your water source. Antifreeze can be used
multiple times. However if it gets to diluted (more than 50%
water) or if there is any discoloration, discard that antifreeze
and replace with new.
Be careful with jetter hose against sharp edges
Sharp edges can scrap, slice and generally damage hose
quickly. While hose is easily replaced, it pays to take care
by buering sharp edges with tape, cardboard, etc., to
maximize its useful life. MyTana has a TigerTail that helps
protect your hose. See MyTana.com for details.
Do not use Pulse-Abler more than necessary This device
is what enables high-pressure cleaning through multiple
turns in sink and sewer lines. However, the Pulse-Abler also
creates extreme vibration and faster wear on the pump. So,
use as needed, but do not use if a blockage or sewer line
conguration does not require it.
Helpful Operating Hints
• Tight bends and certain blockages are often more
easily negotiated by rotating or twisting jetter hose
at drain opening. Once you are through that area,
pull back and pass through several times to ensure
cleaning. Once you have opened the blockage(s),
pull hose back very slowly to provide maximum
cleaning to wall of pipe.
• When operating from the high end to low end (most
common) shut o the water ow ball valve on the reel
occasionally. This will allow debris to get ahead of the
nozzle and ush it down the pipe.
• Grease and Ice Blockages Warm water is eective
in cleaning grease and ice blockages. A cold-hot mix
from the tap is adequate. However, do not exceed 145
degrees Fahrenheit. Hotter water can damage seals in
your pump.
Shutting Down
1. When completing pass through drain, watch for tape
marker on hose as you pull the hose out.
2. Reduce pressure gradually with pressure regulator
knob until pressure gauge is at zero.
3. Stop the jetter motor/engine
Electric Models
• Move switch to “o” position
• Unplug extension cord from receptacle
Gasoline Models
• Move throttle lever all the way to the right
(slowest setting)
• Turn the key to the “o” position
• Turn the fuel valve to the “o” position
4. Continue to run water through pump and hose for
30 to 60 seconds.
5. Close water faucet and disconnect garden hose from
spigot.
6. Close water inlet valve. Disconnect garden hose from
jetter.
7. Pull remaining jetter hose from drain line.
8. Remove nozzle if you chose.
9. Store jetter hose properly on reel or in a coil to avoid
damage to hose.
PG 8 MyTana M20T / M20 / M30 JETTER User Manual
Troubleshooting
Problem Probable Cause Solution
Low Water Pressure
Worn nozzle Replace nozzle
Oversized nozzle Attache correct nozzle
Pulling air at inlet line Disassemble, reseal and reassemble
Inlet strainer clogged Detach hose, clean strainer
Pressure regulator wide open Turn pressure regulator to the right to increase
pressure
No Water ow
Kinked or collapsed garden hose Remove kink or replace worn hose
Water supply not turned on Turn water supply on
Clogged nozzle Remove nozzle & clean orices
Intake or reel valve primed Make sure valves are open
Inconsistent and/or
erratic pressure
Sucking air on inlet side of pump Make sure connections are tight
Partial blockage in inlet hose or lter Remove blockage
Pump not properly primed Disconnect hose at outlet & run until pump is
properly primed
Electric motor trips
circuit breaker OR
electric motor overheats
Extension cord is too small Replace with heavy duty extension cord
Pressure regulator at full pressure Reduce pressure with pressure regulator
Other electrical devices already drawing
current on circuit
Either temporarily disconnect other electric
devices or nd new circuit
Inadequate electric fuse or breaker Recommended 20 amp breaker/fuse
Exceeding maximum recommended pressure Reduce pressure at regulator
Clogged nozzle Clean or replace nozzle
Electric motor won’t
start
No power at outlet Tripped circuit breaker. Reset breaker
GFI on power cord is tripped Reset GFI
Motor overload button is tripped Reset overload button
Water leaking from
under pump manifold Worn packing (seals) Install new packing (seals)
Oil leaking from
underside of crankcase Worn piston rod seals Replace seals
Water in crankcase
Humid air condensing into water in crankcase Change oil. Use only high grade automotive 30
weight non detergent oil
Worn packing and/or piston rod sleeve. O-ring
on plunger retainer worn replace packing. Replace O-rings
Oil leaking at rear
portion of the crankcase
Damaged crankcase; rear cover O-ring’ drain-
plug or sight glass O-ring
Replace cover O-ring, drain plug O-ring or sight
glass O-ring
Frequent or premature
failure of the packing
(seals)
Scored, damaged or worn plunger Replace plungers
Excessive pressure to inlet manifold Reduce inlet pressure
Abrasive material in uid passing through
pump
Properly lter uid being pumped. Use clean
hoses & ttings
Excessive temperature of uid being pumped Do not exceed 140 degrees
Running pump dry NEVER run pump dry!
/