Jacto pjm-25 User manual

Operator’s Manual - English
Jacto Power Knapsack Sprayer
Code: 1278817 / Date: 09-2020 / Edition: 1
Manual de Instruções - Português (página 40)
Manual del Operador - Español (página 79)
CAUTION: IT IS MANDATORY
TO READ AND THOROUGHLY
UNDERSTANDTHE OPERATOR’S
MANUAL BEFORE USINGTHE
EQUIPMENT.
Customer attendance: Dr. Luiz Miranda, 1650,
17580-000 – Pompeia – SP – Brasil.
Email: [e-mail]
Home page: www.jacto.com
Assembled and distributed by INTERMAN Corporation Ltd.
under license of Máquinas Agrícolas Jacto S.A.
Rojana Industrial Park (Rayong) 3/3, Moo 2,
Bankhai-Banbueng Rd.T. Nongbua.
A.Bankhai Rayong 21120 -Thailand

1. Safety precautions 5
1.1. Working area safety 5
1.2. Personal Safety 5
1.3. Important safety precautions about sprayers 6
1.4. Important safety precautions about handling agrochemicals 7
1.5. Important safety precautions about the engine and fuel 7
1.6. Safe transport and storage 8
2. Introduction 8
3. Technical Specifications 8
4. Components 9
5. Controls 10
5.1. Throttle lever 10
5.2. Engine stop button 10
5.3. Choke lever 11
5.4. Starter handle 11
5.5. Priming pump 11
5.6. Shutoff valve 11
5.7. Pressure knob 12
6. Preparing the sprayer 12
6.1. Connecting the hose to the spray lance 12
6.2. Harness and lumbar support 13
6.3. Tightening the harness 13
6.4. Loosening the harness 13
7. Sprayer pre-use inspection 14
7.1. Checking the engine oil level 14
7.2. Recommended oil 15
7.3. Checking the fuel level 15
7.4. Checking the air filter element 17
7.5. Checking and adjusting the throttle cable 18
7.6. Checking the pump oil 18
7.7. Checking the nozzle 18
7.8. Checking the agrochemical tank and the tank strainer 19
7.9. Filling the tank with agrochemical solution 20
7.10. Triple rinsing empty agrochemical containers and tank 20
7.11. Checking if all nuts and bolts are firmly tightened 20
7.12. Checking for leaks in the pump 20
8. Starting the engine 21
8.1. Warm start 24
8.2. Operating sprayer at high altitude 24
9. Stopping the engine 24
10. Operating instructions 25
10.1. Before operating the sprayer 25
10.2. Operating the sprayer 25
10.3. While operating the sprayer 27
SUMMARY

10.4. After operating the sprayer 28
10.4.1. Draining the fuel tank 28
11. Maintenance 28
12. Maintenance table 29
12.1. Tool Kit 30
12.2. Changing the oil 30
12.3. Air filter maintenance 31
12.4. Spark plug maintenance 32
12.5. Fuel filter maintenance 34
12.6. Cleaning the fuel tank 34
12.7. Cooling vanes maintenance 35
13. Transporting the sprayer 36
14. Storing the sprayer 36
15. Troubleshooting 37
16. Limited Warranty Terms and Conditions 39
16.1. Warranty period 39
16.2. Warranty is granted 39
16.3. Warranty is void when 39
16.4. Warranty does not cover 39
16.5. General terms 39
17. Parts list 118
17.1. Pump/ bomba 120

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Before operating the sprayer, identify and understand the meaning of all stickers below.
WARNING
Wear eye protection
(safety glasses or facial shield).
Wear suitable respirator and
proper protective clothing.
Read the operator’s manual
Wear proper protective clothing.
Keep bystanders away while
spraying.
SAFETY GUIDELINES – DEFINITIONS
It is important that you read and understand this manual. Information described in it concerns YOUR SAFETY and AVOIDING PROBLEMS. The symbols
below are meant to help you to recognize this information.
NOTE: This message supplies suggestions for use, care and maintenance of the sprayer.
NOTE: The use without this safety warning symbol indicates a potentially dangerous situation which, if not avoided, may result in damages to the
property.
Safety stickers
WARNING!
Potentially dangerous situation which, if not avoided, could result in death or serious injuries.
DANGER!
Situation posing imminent danger which, if not avoided, could result in death or serious injuries.
CAUTION!
Potentially dangerous situation which, if not avoided, could result in death or serious injuries.

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WARNING!
Read all safety warnings and all instructions. Failure to follow the instructions and warnings may result in
electrical shock, re and/or serious injuries.
1. Safety precautions
1.2. Personal Safety
Boots
Head protection
Eye protection
Mask
Long sleeve shirt
Apron
Gloves
Pants
1.1. Working area safety
• Keep the work area clean and well lit. Disorganized or dark work areas may cause accidents more easily.
• Keep children and bystanders away from when operating the sprayer. Distractions may cause you to lose control.
• Do not spray areas near bystanders or animals;
• Do not operate the sprayer in enclosed locations – such as sheds, garages, buildings, etc.;
WARNING!
• Read this manual closely. Make sure you understand
how to operate the sprayer correctly before using it.
• Wear the recommended individual protective
equipment (PPE): facial shield, dusk mask, long
sleeveshirt,apron, gloves,pantsandno-slipsole
boots,hearingprotectors (ear mus),etc. aswell
as any other equipment the activity performed
requires.FailuretowearPPEmayresultinseriouslong
and short-term problems to your health;
• Do not spray for long periods of time. Take short
breaks during work.
• Do not use the sprayer if you are tired or under
the inuence of drugs, alcohol or medications;
A moment of inattention during work may result in
personal injuries and serious damages to the sprayer.
• Do not overdo. Keep secure footing and balance
atall times.This allowsbetter controlofthe knapsack
sprayer in unexpected situations;
• Wear proper clothing. Do not wear loose-tting
clothesorjewelry.Keepyourhair,clothingandgloves
clearof movingparts.Loose-tting clothing,jewelryor
long hair may get entangled in moving parts.
• Never modify the sprayer. This may pose real risk to
both the operator and void the warranty;
• Never try to use an incomplete sprayer or one
which has been modied without the manufac-
turer’s authorization;
• After work, take a shower in running water and
use plenty of soap;
• Any clothing and PPE worn during applications
must be washed separately from everyday
clothing.

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1.3. Important safety precautions about sprayers
DANGER!
• Do not spray ammable or combustible chemical products. This poses serious re or explosion risks;
• DONOTspray acidsorcorrosivechemical products.Thisposesserious re,explosionandleakagerisks.Some
sprayer parts may be permanently damaged.
WARNING!
• Do not use the sprayer for any other purpose other than to spray plant protection products
approved by regulatory agencies for knapsack sprayer use. Any other use which is not in accordance
with the instructions and uses described in this manual may be dangerous, damage the sprayer and have the
warranty voided;
• Check the sprayer before spraying. Certique-se de que não há nenhum vazamento ou peças faltando.
Make sure there are no leaks or missing parts. Do not operate the sprayer if it is not in good conditions;
• Do not point the spray nozzle at people and animals. Depending on the product used, the solution
sprayed may be toxic;
• Keep the work area clean and well lit. Disorganized or dark areas increase the number of accidents;
• Do not use the sprayer or rainy or windy days to avoid agrochemicals from spreading;
• Always check the direction of the wind before starting spraying. Do not spray against the wind;
• Never allow people who are not familiar with this manual, or children to use this sprayer;
• Avoid using the sprayer in steep areas. There is a risk of slipping and having an accident;
• It is not advisable to operate the sprayer at night or under bad weather and poor visibility condi-
tions. There is a high risk of accidents;
• Do not operate the sprayer if stickers and other parts have been removed;
• Do not spray against the wind;
• Do not operate the sprayer if it is frozen;
• It is not advisable for those suering from any of the following conditions below to apply agro-
chemicals or help to spray them:
* allergies;
* during menstrual periods;
* during pregnancy;
* liver or kidney disease;
* sick or recovering from an illness;
* other medical restrictions.
• Do not eat, drink or smoke while spraying. There is serious risk of poisoning;
• The sprayer must be cleaned before using an agrochemical that is dierent from the previous one;
• Dispose of chemical containers appropriately. Follow the recommendations of local regulatory agencies
and follow the disposal instructions supplied by the agrochemical manufacturer;
• During transport in vehicles, the sprayer must be o and secured. Always keep the trigger valve closed
during transport and when sprayer is not being used.

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Risk of fire and burns
DANGER!
• Gasoline is extremely ammable and gasoline vapor can explode. Be careful when handling gasoline.
Keep it out of the reach of children;
• Store fuel in containers specically designed for this purpose;
• Only refuel the sprayer outdoors and do not smoke when refueling or handling fuel;
• Only fuel the sprayer before starting the engine. Never fuel it while the engine is running or when it is hot;
• If gasoline overows or spills, do not start the engine. Take the sprayer away from the fueling location and
clean it thoroughly;
• Tighten securely the caps of all containers;
• Do not start the engine near fuel containers or fueling areas;
• Do not store the sprayer in closed areas with gasoline in the tank. Vapor may reach ames, sparks or
high-temperature sources;
• Wait for the engine to cool o before storing the sprayer;
• Only drain the fuel tank when it is cold in a well-ventilated area.
Risk of carbon monoxide poisoning
WARNING!
• Exhaust gases contain poisonous colorless and odorless carbon monoxide. Breathing exhaust fumes
(carbon monoxide) may result in loss of consciousness and lead to death. Always wear PPE;
• Do not operate the sprayer in enclosed or poorly ventilated areas as the air may contain a dangerous
amount of toxic exhaust fumes;
• Replace any defective muer.
1.4. Important safety precautions about handling agrochemicals
WARNING!
• Always wear personal protective equipment (PPE) when handling agrochemicals;
• Read closely the agrochemical labels. Always follow the recommendations of the manufacturer;
• Only apply the required amount of agrochemicals;
• Do not mix agrochemicals unless otherwise recommended by the manufacturer. Intense chemical
reactions may occur;
• Keep agrochemicals out of the reach of children and animals. Store and lock agrochemicals to prevent
untrained people from handling them;
• Before starting the engine, make sure the sprayer hose is safely attached and that the shuto valve is
turned to the position“CLOSED”. Otherwise agrochemicals may spill over you during work;
• In case of intoxication, seek immediate medical help. Show the physician the agrochemical label.
• Wash your hand and parts of the body that came in contact with agrochemicals before and after
starting spraying.
• Dispose of agrochemical containers correctly. Follow the recommendations of the local regulatory agency
and the disposal instructions of the manufacturer.
• Do not pollute the environment.
1.5. Important safety precautions about the engine and fuel

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1.6. Safe transport and storage
CAUTION!
• During transport in vehicles, the sprayer must be o and secured. Always keep the shuto valve
closed during transport and when the sprayer is not being used.
• Do not transport the sprayer next to foods, drinks, medications, animal feed, animals or people
without protective equipment;
• Store the sprayer in well-ventilated and safe areas. Do not store the sprayer with agrochemicals in the
tank. Agrochemicals may cause dierent reactions and damage the sprayer components if stored in the sprayer
when it is not being used. They may also endanger the health of the operator. Store the sprayer in dry, protected
and covered areas especially in areas of severe winters;
Used sprayers must be disposed of in a proper and approved location that receive these types of materials. In case there is not a
proper location near you, please contact JACTO CUSTOMER SERVICE: Rua Doutor Luiz Miranda, 1650 CEP 17580-000, in the city of
Pompeia, SP - Brazil. E-mail: [email protected]
Disposal
This manual contains all the necessary information to assemble and operate the sprayer. Read it carefully and follow closely all the
instructions.
This sprayer was designed to spray plant protection products approved by regulatory authorities for knapsack sprayer use. Do not use
this sprayer for any other purpose other than the one mentioned.
NOTE: Keep this manual in a safe and easily accessible place for future reference.
2. Introduction
3. Technical Specifications
Engine
Type 4 strokes, camshaft single,
cylinder
Displacement 35.8 cm³
Diameter × Stroke 39.0 x 30.0 mm
Engine useful power 1.0 kW / 7.000 rpm
Engine maximum torque 1.6 N·m / 5.500 rpm
Cooling system Forced air circulation
Ignition system Magneto-transistor
Fuel tank capacity 0.63 L
Oil capacity 0.1 L
Spark plug NGK: CMR5H
Model PJM-25
Maximum dimensions (W x L x H) 400 mm x 440 mm x 630 mm
Net weight 13.3 kg
Gross weight (empty) 11.5 kg
Lance length 853 mm
Hose length 1600 mm
Nozzle installed Cone nozzle ATR 2.0 yellow
Tank material PEAD
Pump
Type Piston
Piston material Ceramics
Maximum working pressure 360 psi (25 bar)
Pressure adjustment system Relief valve
Working ow at 5000 RPM (L / min) 8.8
Drive system Automatic centrifugal clutch
Tank
Capacity 25 L
Filler neck diameter 150mm

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4. Components
Quick connector
Valve
Tank cap Spray lance
Tank
Hose
Pressure knob
Throttle lever
Engine stop button
Engine
Spray nozzles
Metallic
connection
Shuto
valve
Shoulder harness
Tool kit

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Fuel return tube
Choke lever Starter grip
Air lter Muer
Engine type
Engine serial
number
Fuel tank
Priming
pump
Fuel tank cap
Fuel tank
Oil ller cap
5. Controls
5.1. Throttle lever
The throttle lever, located on the side end of the sprayer, controls the engine speed from SLOW to FAST.
Throttle lever
Positioner
Positioner
Engine stop
button
FAST
SLOW
NOTE: Excessive acceleration impairs the pump performance the position of the and negatively aects both the pump and the en-
gine. The throttle controls the engine speed . Do not change lever positioner or force it to increase in engine power and speed.
5.2. Engine stop button
When pushed, it stops the engine.

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5.3. Choke lever
The choke lever opens and closes the carburetor choke valve. The CLOSED position enriches the fuel mixture to start a cold engine.
The OPEN position gives the correct fuel mixture to operate the sprayer after starting and to start a warm engine.
CLOSED
OPEN
Choke lever
5.4. Starter handle
When pulled, the starter handle starts the engine.
Note: Avoid jerking the starter handle. Always pull it straight out rmly.
5.5. Priming pump
When pushed, the priming pump circulates fuel from the fuel tank to the carburetor. Whenever the engine is started, this procedure
must be followed in case air is noticed inside the priming pump.
Priming pump
Starter grip
5.6. Shutoff valve
Use the shuto valve to open and close the spray lance trigger valve.
CLOSED
CLOSED
OPEN
Shuto valve

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5.7. Pressure knob
Use the pressure knob to set the pressure and spray volume.
• To increase the pressure and the spray amount, turn the pressure knob
clockwise (HIGH).
• To reduce the pressure and the spray volume, turn the pressure knob
counterclockwise (LOW)
Pump outlet
Hose
Pressure knob
6. Preparing the sprayer
Hose Trigger valve
handle Shuto
valve Lance rod Nozzle
6.1. Connecting the hose to the spray lance
Follow the steps below to connect the hose to the spray lance.
a.Connect the sprayer hose to the trigger valve handle;
b.Connect the trigger valve handle to the shuto valve;
c. Connect the shuto valve to the lance rod;
d.Connect the lance rod to the spray nozzle;
e.Finally, connect the sprayer hose connector to the pump oultet.

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Connect the buckle to better adjust the harness and ensure the safety of the operator and the sprayer
6.2. Harness and lumbar support
The sprayer is provided with a padded strap and with lumbar protection for better ergonomics and comfort to the operator, it is very
important to make the appropriate adjustments before use.
Harness
Lumbar support
6.3. Tightening the harness
Hold the middle harness buckle rmly. With the other hand, pull the strap downwards.
6.4. Loosening the harness
Hold the middle harness buckle rmly. With the other hand, pull the strap backwards.
Strap Buckle

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Before checking the engine oil level, make sure to turn o the engine and set the sprayer on level ground.
Follow these steps:
a.Remove the oil tank ller cap;
b.Check the oil level. If it is below the maximum ll line, add recommended oil until the maximum ll line.
c. Put the oil tank ller cap back.
NOTE: To prevent the oil from overowing, add it slowly and carefully as the tank capacity is small. After adding oil, check if the cap is
well placed before restarting the engine.
CAUTION!
Before putting the sprayer on your back, make sure the harness straps are not stuck in the throttle lever.
Throttle lever
Strap
Before using the sprayer, it is very important to carry out the pre-use inspection to prevent possible injuries to the operator, damages
to the sprayer and the environment.
So, every time before using the sprayer, always check for agrochemical, oil or gasoline leaks under the engine and all over the sprayer.
NOTE: In case there is any leak, check the “15. Troubleshooting” item or contact specialized technical assistance to have it repaired
immediately.
7. Sprayer pre-use inspection
7.1. Checking the engine oil level
Before starting the engine check the engine oil level and add if necessary add more oil until the maximum ll line is obtained. If the
engine is used continuously for long periods, check engine oil level every 10 hours of operation.
WARNING!
• Before carrying out any pre-use inspection, make sure the engine is OFF to prevent it from starting
by accident.
• Carry out the pre-use inspection on a level surface.
CAUTION!
The engine oil aects directly the performance and the useful life of the engine. We do not recommend using
vegetable oil or non-detergent oil.

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7.3. Checking the fuel level
Use unleaded gasoline with an octane rating of 86 or higher. Never use fuel that is over 30 days
old or contaminated gasoline. Do not use a mixture of gasoline/oil.
Avoid getting dirt or water in the fuel tank. If this happens clean it immediately.
Oil ller cap
Maximum ll line
CAUTION!
Do not use the engine with insucient oil. It may seriously damage the engine.
CAUTION!
Using a non-detergent oil or oil for 2-stroke engine may shorten the engine useful life.
7.2. Recommended oil
Use an oil for 4-stroke engine that meets or exceeds the SE classication standards of the API service or higher (or equivalent). Always
read the API service label on oil bottles to make sure they include the SE rating or higher (or equivalent).
SAE 10W-30 is recommended for general use.
Room temperatue

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To prevent fuel related problems closely follow the recommendations below:
• Use only recommended gasoline;
• Use new and clean gasoline (never use gasoline older than 30 days);
• Keep the gasoline in a certied fuel container to prevent deterioration.
• Drain the fuel tank and the carburetor if storing the sprayer for more than 30 days.
a.Place the knapsack sprayer on a level surface and check if there is enough fuel.
b.If the fuel level is low, refuel it. Do not add fuel above the fuel maximum ll line. Remove the fuel tank cap slowly to release
pressurized air from inside the fuel tank. Fuel may spill out of the tank if the fuel tank cap is removed too quickly.
CAUTION!
Gasoline replacements are not recommended as they may damage the engine.
DAMAGES CAUSED BY DETERIORATED FUEL ARE NOT COVERED BY THE WARRANTY.
• Gasoline is highly ammable and explosive.
• Refuel in a well-ventilated area with the engine o. Do not smoke while fueling. Do not fuel where there
are ames, sparks or where gasoline is stored.
• Do not overll the fuel tank (do not have fuel in the ller neck). After fueling, make sure the tank cap
is rmly and correctly closed.
• Be careful not to spill fuel when refueling. Spilled fuel or fuel vapor may catch on re. If fuel is spilled,
make sure to dry it before starting the engine.
• Avoid repetitive or prolonged fuel contact with the skin or inhaling its vapor. KEEP FUEL OUT OF
THEREACH OF CHILDREN.
WARNING!
Fuel tank cap
Fuel maximum ll line
RECOMMENDATION:
Gasoline deteriorates very quickly depending on factors such as exposure to light, temperature and weather. Gasoline usually gets
contaminated, loses eciency and impairs engine performance 30 days after purchase.
Using contaminated gasoline may seriously damage the engine (clogging the carburetor,and sticking valves).

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7.4. Checking the air filter element
a.Move the choke lever to the CLOSED position.
b.Remove the air lter cover by releasing the upper guide at the top of the cover and the two lower guides.
c. Check the air lter element to make sure it is clean and in good condition. If necessary, wash it in water and mild detergent and
moistened it with oil.
d.Reinstall the element and the cover by inserting the two lower guides and then the upper guide. Replace the element if it is
damaged.
Upper guide
Choke lever
Air lter cover
Upper guide
Lower guides
Air lter element
CAUTION!
Use water and mild detergent to clean the air lter element. Using solvents may result in re or explosion.
WARNING!
Never use the engine without the air lter. Contaminants such as dirt and dust which will be sucked inside the
engine by the carburetor causing engine damage.

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7.6. Checking the pump oil
To check the pump oil quality and level, follow the steps below:
1.Remove the lumbar cushion
2.Check if the oil level on the oil inspection window. If the oil is low add oil until it is between 50% to 60% of the window height.
In case of doubts please contact your authorized technical assistance.
NOTE: Pump oil may be milky in color due to contamination. Periodically replace the pump oil according to the maintenance table.
NOTE: SAE 10W-30 general use oil is recommended for the pump.
7.7. Checking the nozzle
Check if the spray nozzle is spraying properly . If not, take the nozzle apart and clean it. To clean it, follow the steps below:
7.5. Checking and adjusting the throttle cable
a.Remove the air lter cover
b.Check for slack in the throttle cable and the ends of the cable by pulling and releasing the throttle lever a few times.
If the slack is more than 0.5–2.5 mm, loosen the locknut and turn the adjusting nut in or out as needed to obtain the correct gap.
c. Tighten the locknut.
d.Check if the throttle lever is working perfectly.
e.Reinstall the air lter cover.
Reduce
slack
Increase
slack
GAP:
0.5-2.5 mm
Locknut
Adjusting nut
Average level
Pump oil
inspection
window

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• Clean the nozzle to remove any dirt or clogging.
• Replace the nozzle if it is damaged.
7.8. Checking the agrochemical tank and the tank strainer
a.Remove the tank and the drain cap and check for cracks, or damaged seals. In case they are damaged, replace them;
b.Check for cloggs or damage to the tank strainer;
• Clean with running water if it is dirty or clogged;
• If damaged, replace it.
c. Check for cracks or damage in the chemical solution tank;
• If the tank is dirty inside with agrochemicals, clean it according to the instructions described in this manual;
• Replace the tank if damaged or broken.
d.Reinstall the lter and tighten the both caps rmly to avoid leaks and contamination.
Cap
Strainer
Tank
Drain cap
NOTE: In case of storing the sprayer for long periods, triple rinse empty agrochemical containers, the tank and the hoses (item 7.10) or
take the sprayer to an authorized technical assistance.

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7.9. Filling the tank with agrochemical solution
Before preparing the agrochemical for spraying, read closely the labels and instructions to prepare and handle it.
To avoid agrochemical waste and contamination, make sure the drain cap is rmly tightened before pouring the agrochemical solu-
tion into the tank.
Fill the agrochemical tank on a level surface and always use the tank lter.
7.10. Triple rinsing empty agrochemical containers and tank
NOTE: Even containers considered empty contain agrochemical residues. Therefore, disposing of containers without washing o the
residues is extremely dangerous for people, animals and the environment. In case of metal, plastic or glass agrochemical containers,
each one must be triple rinsed to ensure residues are completely rinsed away. This manual describes how to triple rinse the containers
correctly, safely and eciently.
a.Immediately after emptying the container, keep it upside down on the sprayer tank ller neck or on a bucket used to prepare
the agrochemical solution for at least 30 seconds until there is no more liquid in the container.
b.Keep the container vertically and ll 1/4 of it with water. For example: in a 1000-ml container, add 250 ml of water.
c. Insert the container cap and tighten it enough to prevent spilling while shaking it.
d.Shake the container in all directions (horizontally and vertically) for approximately 30 seconds to remove the residues inside
the container.
e.Remove the container cap carefully, pour the rinsing water in the spraying tank.
f. Hold the container on the spraying tank ller neck for approximately 30 until the last drop.
g.Repeat this operation two (02) more times. After that, the triple rinsing is complete.
h.Cut some holes on the plastic and metal containers with a sharp tool to prevent them from being used again. Their labels should
not be ripped for future identication.
When lling the tank with agrochemical solution, make sure to use the tank lter. Any foreign substance or powder can cause prob-
lems in the pump and nozzle.
To triple rinse the tank and the hose, follow the instructions on item“10.4. After operating the sprayer”.
7.11. Checking if all nuts and bolts are firmly tightened
If necessary, tighten the bolts and nuts properly.
7.12. Checking for leaks in the pump
After checking the engine, check the pump ttings for agrochemical leaks.
Drain cap