Valex TST5136, Instruction Manual And Safety Instructions, Page: 13 / 16

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will hook onto the door’s axis (pos.6).
2. Fig. D2: Grab the grass collection box by the handle and insert it
until it hooks onto the two plates, then guide the rear door with your
hand until it rests onto the box in order to close every opening. Check
that the grass collection box is stable and cannot be unhooked.
CHECK BLADE FASTENING (fig. M)
!
WARNING! All operations indicated below must be carried out
with the engine switched off, the blade still, and the spark plug cap
disconnected. Always wear protective gloves.
This check must be carried out upon first using the lawnmower.
Avoid turning the blade by hand as it is directly connected to the piston
and may compress the engine combustion chamber.
1. Fig. M1: Disconnect the spark plug cap (pos. 20) from the spark
plug (pos. 19) to prevent suddenly starting the engine.
2. Fig. M2: Tilt the lawnmower as shown in the figure to gain access
under the machine. Secure the position with straps to prevent the
machine from falling on you.
3. Fig. M3: Use one hand to hold the blade (pos. 26) away from the
cutting area, and using a socket hex key, check that the screw is
tightened (pos. 27).
! WARNING! Take the following steps for the initial start-up of
the engine. Read and follow the instructions in the next chapter.
4-STROKE INTERNAL COMBUSTION ENGINE (4T)
! WARNING! All the operations described below must be carried
out with the engine switched off.
! WARNING! Always wear safety gloves and safety goggles.
The engine is supplied without lubricating oil and without fuel. Starting
the engine without oil or with an insufficient amount of oil will irre-
parably damage it and cause the warranty to become null and void.
ENGINE OIL
!
WARNING! The engine is supplied without lubricating oil: do
not operate the machine! You must first add oil to the machine.
Use a quality, highly detergent oil for 4T engines, classified under API
categories SG or SF. An SAE 15W-40 oil is suitable for all working
temperatures, but it is always best to choose the oil type based on
the average temperatures of the area.
Ambient temperature of use Degree of oil viscosity
from 0°C to 25°C SAE 20W, 10W-30, 15W-40
from 25°C to 35°C SAE 30W, 10W-30, 15W-40
Above 35° and up to 45° C SAE 40W
FIRST USE AND TOPPING UP THE ENGINE OIL (fig.E)
1. Position the machine on a stable, level surface.
2. Unscrew the oil cap (pos. 8) in an anti-clockwise direction and
wipe the end.
3. Fill with the required quantity of oil (see the technical specifications).
4. Screw the cap back on, wait a few seconds, check the oil level as
shown in the figure, and top up if necessary. The engine oil level must
be within the range indicated on the rod attached to the cap; a greater
or lesser quantity than the one prescribed will damage the engine.
5. Re-tighten the cap by turning it clockwise.
6. Wipe with a cloth any drops of oil spilled on the machine.
SUBSEQUENT USE, LEVEL CHECK AND TOPPING UP THE ENGINE OIL
! WARNING! You must check the oil level when the engine is
cold before each use.
1. Position the machine on a stable, level surface.
2. Unscrew the oil cap (pos. 18) in an anti-clockwise direction and
wipe the end.
3. Screw the cap back on, wait a few seconds, check the oil level as
shown in the figure, and top up if necessary. The engine oil level must
be within the range indicated on the rod attached to the cap; a greater
or lesser quantity than the one prescribed will damage the engine.
4. Re-tighten the cap by turning it clockwise.
5. Wipe with a cloth any drops of oil spilled on the machine.
FILLING UP WITH FUEL
!
WARNING! Risk of fire and explosion. Refill with fuel with
the engine off, in a well ventilated outdoor area. If the fuel has
splashed onto the machine or pavement, wipe it thoroughly before
starting the machine.
WARNING! Risk of fire and explosion. Do not pour fuel onto hot
engine surfaces.
Only unleaded car petrol should be used (or EuroSuper) with a mini-
mum 95 octane. Never use a petrol-oil mixture, dirty or old fuel, or
petrol blended with alcohol.
Do not allow water or dirt to enter the tank.
1. Position the machine on a stable, level surface.
2. Unscrew the tank cap (pos. 22), turning it anti-clockwise.
3. Fill the tank (pos. 21) without letting it overflow, using a large funnel
(not included). Follow any instructions placed on the tank; if there
are none, keep the maximum level 5cm below the rim.
4. Tighten the cap by turning it clockwise.
SWITCHING ON AND OFF
!
WARNING! Before starting the machine, it is compulsory to
wear all personal protective equipment (not included), mentioned
under the chapter “Safety Warnings”.
! WARNING! As soon as the engine starts, the blade will start
turning.
Before starting the engine, ensure that you have completed the
operations requested in the previous chapters for initial start-up of
the machine and engine.
COLD ENGINE START-UP
1. Check the engine oil level and fill the tank with fuel.
2. Open the fuel cock (pos. 32, where fitted), placing the lever in the
“OPEN” position.
3. For engines with a carburettor priming pump (pos. 31): prime the
petrol circuit by activating the priming pump (pos. 26) 3 times.
4. With your left hand, pull and hold the start lever (pos.2) against the
handle.
5. With your right hand, grab the start-up handle (pos. 10), pull slowly
until you feel resistance, and then pull sharply and decisively;
release the handle once the engine has started. If the engine does
not start, repeat this operation a few times. If the engine still does
not start, consult the chapter “Problems, causes and solutions”.
HOT ENGINE START-UP
Perform the same steps as indicated above, but prime the petrol
circuit 1 or 2 times max.
TURNING OFF THE ENGINE AND STOPPING THE BLADE
! WARNING! The engine and the blade continue to turn for a
few seconds after the machine is switched off.
1. To turn the engine off, release the start-up lever (pos. 2) keeping
your hands on the upper handle.
2. Close the fuel cock (pos. 32, where fitted), placing the lever in the
“CLOSE” position.
BREAKING-IN THE ENGINE
During the first 10 hours of operation, do not strain the engine too
much; for this reason, do not operate the machine at the maximum
RPM when idle and during use do not force the machine by cutting
tall grass; excessive strain can be noticed as the engine rotation
speed changes from constant and becomes a lower, deeper noise.
We recommend repeating these operations several times before
starting work, in order to familiarise yourself with the controls as
much as possible.
If you notice any malfunctions, stop the machine and consult the
chapter “Problems, causes and solutions”.
Turn the machine off when not in use.