Here you will find a list of frequently asked questions about Mantis Tillers.
2-stroke tiller (SV4 model): My engine does not start, how to take off/change the exhaust grid?
Please click here to see the different reasons why the 2 stroke would not start. The coil is rarely involved.
If your 2-stroke SV4 does not start due to a clogged exhaust, please follow these instructions to change it:
a. Take the engine off the machine as follow:
b. Take off these two screws:
c. Remove the metal cover with a screwdriver as follow:
d. Take the spark plug off and remove the red cover. You will have this:
e. Unscrew all 3 screws on the exhaust cover:
f. Remove /replace the exhaust filter. The machine can run without it:
4-stroke tiller: my carburettor fixing is broken, how do I change it?
How to change it:
1.Take off the air filter cover and the air filter. Unscrew the two following screws:
2. Unscrew the following screws (pointed by the blue pen):
3. When this is done, you will be able to take the fixing off and replace it with a new one:
4. Put it back on the machine. Put the throttle cable as follow. Be careful, there must be a distance of minimum 7mm between the bolt and the end of the tube in which the cable is.
5. Screw all the screws back in the reverse order.
6. Start your machine without the blades and if the drive shaft goes too quickly, adjust the speed screw by unscrewing it until the drive shaft turns like the seconh hand of a watch.
2-stroke and 4-stroke Mantis tiller: my machine does not stop, what is happening?
If your machine does not stop, please check the ground cable. It may be disconnected.
If it is not disconnected, the switch may be broken.
The only switch available is for the old 2-stroke model: available here
For the other models, only the handles are available: 2-stroke model here and 4-stroke model here
Electric Mantis tiller: I can’t change the speeds on my machine, what shall I do?
Unless the engine has suffered from an electrical surge and you can’t change the motor speeds, you need to change the circuit breaker, located in the handle of your electric tiller .
Here are the steps to follow:
a) Unscrew all the screws of the handle to open it and have access to the circuit card.
b) Unplug the two following terminals (light blue and dark blue):
c) Take the circuit card off to replace it:
d) Put the new circuit card in place. Be careful, the wires need to follow the order on the picture below:
e) When the new circuit card is set up, plug back the terminals and close the handle by screwing it back.
Electric Mantis tiller: my machine has overheated, my engine is out of order, how do I change it?
These are the tool you will need: pliers, an Allen wrench and a screwer or a T20 torque screwdriver.
a) Disengage the engine from the machine by unscrewing the screws:
b) Open the red engine cover:
c) You will see this:
d) Unplug the circuit breaker and the plug:
e) Disengage the engine from the machine:
f) Open the top of the engine as follow:
g) Wedge the engine in a bench vice as follow:
h) Now that the engine is wedged, you can unscrew the back as follow:
i) Unscrew the metal plate behind:
j) The new engine can be screwed on the metal plate:
k) Reassemble the engine on the machine.
If your machine has overheated, it is because you did not let the machine cool down after having short-circuited. Always follow the instructions in the manual you can find here.
Deluxe XP Mantis tiller: my air filters are clogged/dirty, how do I replace them?
It is important to check and change the air filters from time to time. Follow our maintenance tips here.
Clean air filters will ensure optimum performance of your Mantis Tiller. Once dirt infiltrates the fibers of the air filter, the possibility of your engine seizing from dirt ingestion increases.
In the Deluxe XP, there are two air filters: the black pre-air filter and the white one.
To clean the white air filter, put some pure oil on it, let it dry and blow it with a compressor.
To clean the black pre-air filter, put it in soapy water, let it dry and grease it with a few drops of oil (you can use oil from the machine or from our bottles). The air filter always needs to stay greasy.
New air filters are available here and here.
To check / change the air filter, this is how to proceed:
a) Unscrew the cap:
b) Remove the black pre-air filter:
c) Remove the white air filter and change it:
d) Change the pre-air filter and put it back.
My Deluxe XP Mantis tiller does not start. Check the fuel pipes and filter
If your tiller does not start anymore, you have to check if the pipes and/or the fuel filter are not clogged.
Also, if fuel has been left in the tank more than 30 days, you have to check if the pipes and/or the fuel filter don’t need to be changed (they become porous).
a) If the fuel pipes or the fuel filter are clogged or porous, you have to change them. To do so, it is possible for you to buy a set of replacement fuel pipe and filter here.
It consists of the fuel filter and the two fuel pipes. It DOES NOT INCLUDE the fuel grommet so you have to keep the one already on the machine.
To do this, you will need a small flat screwdriver.
b) Take off the grommet by using a screwdriver:
c) Put the pipes through the fuel grommet as follow:
d) Put back the pipes on the carburettor as follow:
e) Insert the fuel filter in the tank and put back the fuel grommet in the intended hole:
4-stroke Mantis tiller: my tiller is running too fast or lacks power, what shall I do?
The tiller is running too fast
How to loose the throttle cable:
The Mantis tiller lacks power
You might need to tighten the throttle cable:
Do the reverse process explained above:
1) Loosen the lower bolt to pull the elbow-shaped pipe up to tighten the cable
2) Tighten the upper bolt to secure the assembly
You might need to check your air filter: follow our maintenance tips here
You can either clean it with soapy water and grease it with oil.
If you need to change it, please follow the instructions here.
My 4-stroke Mantis tiller does not start. Check and change the fuel pipes and/or fuel filter
If your machine does not start, you have to check if the pipes and/or the fuel filter are not clogged.
Also, if fuel has been left in the tank more than 30 days, you have to check if the pipes and/or the fuel filter don’t need to be changed (they become porous).
Important: The 2 fuel pipes and the fuel filter are available in the Kitpipe here but the fuel grommet IS NOT available in the kitpipe. You have to reuse the one on the machine.
1.These are the parts you have received (3 pipes, 1 fuel filter):
To do this, you will need a small flat screwdriver to take off the fuel grommet.
2. Put the long black pipe on one side of the grommet and the short black pipe on the other side of the grommet as follow:
3. Add the yellow pipe next to the short black pipe. Here is what you should have:
4. Insert the fuel filter in the tank and put the grommet in this same opening:
5. This is how to put the pipes on the carburettor (yellow pipe above):
2-stroke Mantis tiller: my tiller is running too fast or lacks power, what shall I do?
1.The tiller is running too fast
You have to loosen the throttle cable:
2.The tiller lacks power
You have to tighten the throttle cable:
a) Loosen the top nut to pull the elbow-shaped pipe up to tighten the cable
b) Tighten the lower nut to secure the assembly
If despite tightening the throttle cable, the machine still lacks power, you need to check several things on your tiller:
2-stroke Mantis tiller: my machine does not start, how to change the fuel pipes and/or filter
If your machine does not start, you have to check if the pipes and/or the fuel filter are not clogged.
Also, if some mixture has been left in the tank more than 30 days, you have to check if the pipes and/or the fuel filter don’t need to be changed (they become porous).
The filter should be changed when it is hard to the touch or if it creases or fuel does not reach the carburettor.
The 2-stroke Kitpipe is available here. It contains 2 black pipes, 1 transparent pipe, 1 fuel filter and 1 fuel grommet:
To do this, you will need a small flat screwdriver to take off the fuel grommet.
1.Put the pipes through the grommet as you can see from the pictures below: The short black pipe (valve pipe) and the transparent pipe (return fuel pipe) must be next to each other. They have to stick out from the grommet of about 5 mm on the inside, where the grommet will go into the fuel tank:
2. Put the fuel filter on the long black pipe. Be careful on which side you are putting it. The filter will have to fit into the fuel tank:
3. Put the valve on the short black pipe as follow.
Here is what you will obtain:
4. Enter the fuel filter into the fuel tank:
5. Put the grommet in the hole provided for such purpose:
6. Connect the long black pipe and the transparent pipe to the carburettor as follow (the transparent pipe on top of the carburettor and the long black one at the bottom):
7. Place the valve which is on the short black pipe under the starter:
2-stroke Mantis tiller: I have left some mixture in my tiller for more than 30 days, the gaskets and diaphragms of the carburettor are now damaged, how do I change them?
The gaskets and diaphragms need to be changed if mixture has been left in the machine more than 30 days. Indeed, after 30 days, fuel evaporates and seals the carburettor.
You will need:
To change the gaskets and diaphragms, of the carburettor, please proceed as follow:
- Unscrew the bolt
- Remove the air filter cover
- Remove the air filter:
4. Unscrew the two golden screws:
5. Unplug these two fuel pipes (on the carburettor):
6. Unscrew the screws around the primer pump. The primer base may be white (older model) or black (more recent models), it is the same procedure to change the membranes and gaskets:
7. This is what you get:
8. Remove this membrane:
9. Turn the carburettor over and unscrew the two screws.
Remove the second membrane and the gasket:
10. The kit contains 5 membranes and gaskets. Always use the membrane which looks like a photo film. Do not use the other. Use 4/5 of the items:
11. Take these two parts: gasket above and membrane under:
12. Put on the lower part of the carburettor:
13. Take the body of the carburettor on the side of the accelerator and slide the lower part. Be careful to not tear the membrane apart:
14. Screw back the two screws:
15. Put the gasket under the membrane:
16. Put the membrane and gasket on the body of the carburettor:
17. Put the white (or black) base part back:
18. Put the primer pump back.
Tighten the screws:
19. Put back the pipes:
20. Put everything back together, the air filter, the cover and the bolt:
4-stroke Mantis tiller: the choke of my machine has broken, how do I change it?
To change the complete starter of your Mantis tiller, follow these instructions:
a) Remove the air filter cover:
b) Remove the air filter:
c) With a 8mm spanner, loosen the 2 nuts:
d) Using a screwdriver, remove the rubber attached to the starter and pull to remove the starter:
e) Use the same process in reverse to assemble the new starter.
4-stroke or Deluxe Mantis tiller: I have left fuel in the tank for more than 30 days, the gaskets and diaphragms are now damaged, how do I change them?
If you have left fuel in the tank more than 30 days, you might need to change the membranes and gaskets of the carburettor.
You will need:
a ratchet wrench (8mm) and a small screwdriver:
This is how to proceed:
Note: If you own a Deluxe XP machine, the back of the carburettor may differ but it is not relevant here.
a) Unscrew the 4 screws on top of the carburettor:
b) Take the primer base off with a screwdriver:
c) Take the membranes and the spring off the carburettor:
d) Put the spring back then put membranes 3 and 4:
e) Take the black support off the carburettor and take off the old membranes:
f) Put membranes 2, then 1 on the carburettor:
g) Put everything back together.
4-stroke Mantis tiller: how to change the spark plug if fouled, shorted or broken
The spark plug on your Mantis tiller needs to be changed every year (please follow our maintenance tips here).
Also, if the machine does not start, it may be because the spark plug is fouled or shorted and you have to change it. New spark plugs are available here.
To change the spark plug:
a) Use a 5mm Allen wrench to unscrew the red engine cover
b) Take the spark plug cap off:
c) Use a 16mm plug spanner to unscrew the spark plug and replace it with a new spark plug:
4-stroke Mantis tiller: my engine cuts out at full throttle and/or my tines do not turn, what shall I do?
You should check the clutch drum of your Mantis tiller.
In order to do that, you have to disengage your engine from the transmission.
a) Under the engine, you should remove 4 of the 10 screws to get to the clutch drum:
b) Once the flange in hand, you should check that the black cover does not exceed of 5 mm the lip of the mounting flange:
c) If it does exceed 5 mm, you should lightly tap on it with a mallet to put it back in place:
4-stroke Mantis tiller: my machine does not start, what shall I do?
There may be several reasons why the engine of your Mantis tiller won’t start:
a) It might be the handle.
Unplug the earth cable.
Start the engine.
If it starts, put the plug back. If the machine stops, the handle needs to be changed (reference 400290, available here)
If the machine does not start after puting the plug back, please have a look at the following points.
b) Maybe, there is too much oil (maximum 60 ml). Please drain the oil (see here)
c) Fuel has been left in the tank more than 30 days in the tank. Drain it and put fresh fuel.
Please check the membranes of the carburettor as they might be damaged and need to be changed. To change them, please go there
d) There is too much fuel: please do not fill the tank top edge, leave some space for the air to circulate.
e) Check the clutch drum (here)
f) Check the spark arrestor or muffler screen in the exhaust:
If the spark arrestor is black, do not hesitate to change it:
g) The fuel filter and/ or the fuel line is clogged. Please check these parts. If you need to change them, please see here how to do so.
h) The spark plug is shorted, fouled or broken. Please change it. Instructions to follow are here
Important:
Please note that if the temperature outside is above 10°C, you can leave the choke down.
4-stroke Mantis tiller: the air filter is clogged/ dirty, how do I check/replace it?
It is important to check and change the air filters of your Mantis tiller from time to time.
Clean air filters will ensure optimum performance of your Mantis Tiller. Once dirt infiltrates the fibers of the air filter, the possibility of your engine seizing from dirt ingestion increases.
To clean your air filter, put it in soapy water, let it dry and grease it with a few drops of oil. The air filter always needs to stay greasy.
To check / change the air filter, this is how to proceed:
a) Pinch the flaps on the air filter cap
b) Remove the old air filter and replace it with a new one (available here)
Follow our maintenance tips here.
All Mantis tillers: maintenance tips
We want to help you keep your Mantis Tiller running at peak performance for many years to come.
Here are a few simple maintenance tips to help you.
Part | Maintenance | Frequency |
Air Filter | Clean Replace |
Daily or every 4 hours use Every 3 months or 90 hours use |
Fuel | Drain Drain |
End of season When stored for longer than 30 days |
Fuel Strainer | Inspect Replace |
Monthly Yearly |
Spark Plug | Inspect Replace |
Monthly Yearly |
Carburettor | Empty Fuel Rebuild |
Every 25-30 days Every 300 hours of use |
Exhaust Port | Inspect/Clean | Before every use |
Muffler Screen | Inspect/Clean | Yearly |
Transmission | Check Grease Level | Yearly |
All Mantis tillers: how to add grease in the transmission
The transmission of your Mantis tiller needs grease to operate efficiently. If there is not enough grease, it might damage the tines and prevent them from turning correctly.
a) This is the back of your Mantis tiller when standing upright. You can see the transmission
b) Pull out the retaining clip and remove the tilling tine for safety reasons
c) Side view of the transmission without the tine
d) Back of the transmission with cover on
e) Unscrew the 4 screws
f) You can see that there is no grease in the gearbox
g) This is how your transmission should look like with the correct amount of grease
2-stroke Mantis tiller: how to replace the spark plug if fouled, shorted or broken
The spark plug on your Mantis tiller needs to be changed every year (please follow our maintenance tips here).
Also, if the machine does not start, it may be because the spark plug is fouled or shorted and you have to change it. New spark plugs are available here or in our handy kit here for SV4 and here for SV6 Mantis tillers.
Important:
NGK and Champion spark plugs are the only recommended spark plugs to be used in Echo engines. The use of the correct type, brand, and heat range is very important in today’s emission certified engines. Never use spark plug manufacturers cross-reference charts. Cross-reference charts are approximations.
The plug will depend on the SV number on your engine; the gap will be the same for each engine – .024-.028.
The SV number of your engine is located between the feul tank and the carburettor, on a black and silver tab on the silver engine housing. It will consist of the letters “SV,” a number and another letter. Example: SV4A, SV4B1E.
How to change the spark plug:
You will need a spanner of 19:
a) Take off the cap:
b) Unscrew the spark plug with a spanner of 19 (spark plug spanners are available here for your Mantis tiller)
c) change the spark plug
2-stroke Mantis tiller: my air filter is clogged/dirty, how do I change it?
It is important to check regularly the air filters. Follow our maintenance tips here
Clean air filters will ensure optimum performance of your Mantis Tiller. Once dirt infiltrates the fibers of the air filter, the possibility of your engine seizing from dirt ingestion increases.
Important: If you just need to clean the air filter, do so with pure fuel.
If you need to change the air filter, find it here for SV4 Mantis tillers and here for SV6 Mantis tillers and follow the isntructions below.
1)Remove the Wing Nut to take off the air filter cover.
2) Remove the air filter and air filter cover.
3) Remove the air filter from the air filter cover.
4) Replace the air filter into the air filter cover. Make sure the filter correctly fits inside the lip.
SV4:
SV6:
5) Replace the air filter cover and the wing nut.
4-stroke Mantis tiller: how to check the level of oil
An engine can’t run without oil and encounters problems with too much oil: the engine starts smoking, the starter rope gets blocked, oil is leaking…
The correct level of oil should not exceed the thread pitch as shown below by the tip of the screwdriver.
Please, do not put more than 60 ML of oil in the tank.
All tillers: download a new instruction manual
Go to this page to find the manual you need and download it on your computer.
At the end of each manual, you will find an exploded view of your machine with the names of the spare parts (very handy if you need to change one of these parts). The manual includes advice, gardening and maintenance tips. Do not hesitate to read it.
4-stroke Mantis tiller: my machine smokes, there is too much oil in it, how do I clean it?
If your machine smokes, if oil flows through the air filter or of the rope is blocked, there is too much oil in the machine. Sometimes, when the machine does not start, it can also be because of an excess of oil in the reservoir.
It is important not to put more than 60ml: click here to see how to be sure to put the right level of oil.
You will need an Allen wrench of 5mm:
If you have put more than 60ml of oil in your Mantis tiller, proceed in the following manner:
a) Unscrew the red cover:
b) You will see the spark plug. Take it off and if there is oil on it, please clean it with a metal brush:
c) Unscrew the two bolts on top:
d) Lift the valve with a screw driver:
e) You will see two “springs” called “valve cover gaskets”. There should be oil covering them. If there is oil there, it means that there is also oil in the air filter and in the exhaust. Please clean the air filter in soapy water. After, soak it with several drops of oil. The air filter needs to stay greasy. If it needs to be changed, please follow the instructions here.
The exhaust will also need to be cleaned by soaking it in fuel or blowing it. It is also possible to run the machine without it.
f) Empty the oil covering these valve cover gaskets and pull the starter cord several times until no more oil appears:
g) Blow with a compressor on the valve cover gaskets. If you don’t have any compressor, let the engine on its side for 30 to 45 minutes to evacuate all the excess of oil.
h) Put the parts back together. Your machine is ready to be used.
The engine might smoke a little, it is normal and should stop once the excess of oil has been completely evacuated.
2-stroke Mantis tiller: how to adjust the carburettor if the machine lacks power or is out of control
You need to adjust the screws of the carburettor as follow:
a) Screw the adjustment screws H and L thoroughly without forcing (if you go too far, there is a risk of permanently deteriorating the carburettor )
b) Unscrew the two screws one turn and a quarter (pre adjustment)
c) Tighten screw H (do not leave the blades before starting the engine)
d) Screw tightly the speed screw (screw with the spring)
e) Start the engine. It will be overspeeding, that is why you have to take off the blades.
f) Unscrew progressively the speed screw. If the machine loses power while unscrewing, screw or unscrew screw L.
g) When the speed screw is correctly adjusted, stop adjusting screw L and put your screwdriver on screw H and your finger on the throttle triangle until it stops. If the machine loses power in between, screw or unscrew screw H to give power to the engine.
h) Once acceleration is adjusted, turn off the machine and start again immediately. The adjustment will be ok if, when starting the machine, the idle is OK and when pushing on the throttle lever, the engine accelerates. You can then put back the blades and start working in the garden!
Important:
In accordance with current EPA Regulations and CARB requirements, limiter caps have been installed on the high and low screws of the carburettor. Removal of these caps by anyone other than an authorized Mantis dealer will void your warranty.
Replacement carburettor, rebuild kits and gasket/diaphragm kits are available. Please contact us directly.
To order parts, you will need the SV# of the engine (go here to know where to find it)
2-stroke Mantis tiller: my machine does not start, what shall I do, does the coil need to be changed?
The coil is rarely involved when the Mantis tiller breaks down. It is rare that the coil fails as it is completely sealed and electronic. The coil is a very low sparking one and can only be properly tested with a 3-point ignition tester. You will not see or feel a spark by grounding the plug.
There are three parts to check on your Mantis tiller if your machine does not start:
1) First, check if the exhaust is not obstructed.
Engine SV4: To check the exhaust of the SV4 Engine, remove the 3 screws above to have access to the exhaust grid which must be obstructed. Remove this grid and try to start the engine one more time.
Engine SV6: To check the exhaust of the SV6 Engine, you just have to insert a small hose to unblock the exhaust. If it doesn’t unblock, you have to change the whole exhaust. If it unblocks, try to start the engine again.
Example: Some bees look for heat and nest in the exhausts as you can see from the pictures below (Sv4 exhaust on the left and SV6 exhaust on the right). That is why you always have to check the exhaust of your machine before using it.
2) If, despite the exhaust unblocked, the engine doesn’t start or if there are liquid leaking from the air filter, you have to check the membranes of the carburettor. They must need to be changed (follow the instructions to change the membranes here). Kits are available here and here.
Indeed, if your machine has been stored away for a few months with even a small amount of old fuel (older than 30 days) in the tank, it can clog the carburettor and cause deterioration of the gaskets and diaphragms.
3) The fuel pipes need also to be checked. If mixture has been left, they may have become porous and unusable. Please find our Kitpipe here and instructions to change the pipes here
Please, follow these instructions to clean your machine:
a) Drain out the old fuel and dispose of it properly.
b) Once the fuel tank is empty, push the primer bulb on your tiller 7 or 8 times to clear out any fuel in the carburettor.
c) Empty the fuel tank again.
d) Next, mix fresh fuel in the correct ratio and fill the fuel tank.
e) Push the primer bulb 11 or 12 times to pull the fresh fuel through the carburettor and let the tiller sit for about thirty (30) minutes.
f) Then press the primer bulb an additional 11 to 12 times to flush out any residue. You should now be able to start your tiller using the standard starting procedure.
Do not use carburettor cleaner. Doing so will void Echo engine manufacturer warranty.
If parts are needed, they are available from www.mantis.uk.com.
4) You might need to change the handle.
Unplug the earth wire.
Start switch on Start (old models before 2006) or O/I (models after 2006)
Start the engine
If it starts, put the plug back. If the machine stops, the handle needs to be changed (available here).
2-stroke Mantis tiller: why is it important to keep the cooling fins clear?
2-stroke Mantis tiller: how to locate the serial number?
When ordering parts for your Mantis 2-stroke tiller, you may need to locate the SV number of your engine. It is located between the fuel tank and the carburettor, behind the fuel pipes, on a black and silver tab on the silver engine housing.
It will consist of the letters “SV,” a number and another letter.
Examples: SV4A, SV4B1E.
2-stroke Mantis tiller: why is my engine bogging down when I give it full throttle?
Please, see the answer to this question.
2-stroke Mantis tiller: my machine is getting really hot, what is happening?
You may not have enough oil in your fuel mixture to properly lubricate the engine.
Always make sure you use the proper 50:1 mixture ratio. Convenient, pre-measured bottles of premium 2-stroke engine oil are available via our online shopping: 2 stroke oil for Mantis tillers.
Also, there may be a buildup of dirt or debris in the cooling fins of the engine; make sure they are kept clean (see here where these cooling fins are).
2-stroke Mantis tiller: my rope pulls out with no resistance, why won’t it turn the engine?
1) There may be some dirt or debris in your pawl catcher assembly causing it to stick.
Remove the 4 screws on the starter assembly and lift it off the tiller. Looking down on the tiller, on top of the flywheel, you will see a gold-colored dish with 2 black levers inside. The levers are called pawl catchers. Use a piece of 80-grit sandpaper and slide it under each pawl. Move the pawl back and forth 10-12 times. This will clean the debris out and smooth the pawls. Replace the starter assembly.
If, despite cleaning the rope, it still does not come back:
2) You have to change the rope and the rewind spring.
a) Unscrew the 4 black screws from the cap of the engine:
b) To remove the old rope, unscrew the screw holding the white drum:
c) Gently lift the white drums so that the spring does not come out:
d) Unroll the old rope from the white drum:
e) Put the new rope in the hole on the side of the white drum and tie a knot:
f) Pull the rope to put the knot back in the drum:
g) Fit the drum back so that the drum notch (see picture 6) is in the spring loop (pic 7) WITHOUT TAKING THE SPRING OUT:
h) Screw the white drum back:
i) Coil the rope around your right hand and hold the drum tightly between two fingers:
j) Turn the cover 8 times clockwise while holding the drum and the rope really tight:
k) Hold the white drum with your thumb and put the rope in the opening:
l) Hold the rope at its end so that it does not coil up completely and let go of the white drum.
Watch out: don’t let go of the rope!
m) Fix the handle by passing the rope inside:
n) Pass the retainer ring and tie a knot at the end of the rope.
Release the rope:
o) Insert the ring and the knot in the opening of the handle:
Your Mantis tiller is ready to dig again!
All Mantis tillers: how do I maintain my Mantis tines?
2-stroke Mantis tiller: how to drain the mixture before storing it for winter?
It is essential to drain the mixture of the engine before storing it for winter. Stored fuel containing ethanol or MTBE can start to go stale in 30 days and clog the carburettor which can lead to damaging the engine.
This is how to proceed:
a) Get the pipe with the fuel filter out of the fuel tank
b) Press the primer bulb until there is no fuel left
c) Drain the fuel tank
Your mantis tiller is ready to be stored for winter.