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ENGLISH
ENGLISH
Remove the handle knot. Be careful since the central wheel will spin till
the spring is completely discharged: keep it and discharge it slowly to
avoid damages or possible injuries. Remove the central screw and its
cover (photo 7).
07
!
ATTENTION!
Under the cover there are two teeth for the starter jaw
(check their condition and if worn replace them); under them 2 small
calipers. Be very careful not to lose these small parts.
Prepare the new rope and tie a knot at the top. Remove the plastic wheel
and the old rope. Thread the new rope in its hole (photo 8),
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wind up the rope on the wheel (according to the entrance sense of the
rope on the wheel) (Photo 9).
09
Now insert the plastic wheel in its housing again, and check through
the hole that the internal spring hook is perfectly coupled (Photo 10)
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place the springs, the teeth for the starter jaw and screw the cover again
using medium thread-locker.
All the parts in movement, including the springs, must be well lubricated.
Now go on by charging the return spring: take the head of the rope
leaving 10-20 cm coming out the hole with “u” shape on the wheel
side. Turn the wheel 6,5 times in counter clock-wise sense till it stops in
front of the exit hole on the aluminium case. Keeping the plastic wheel
stopped, pass the rope through the case hole. Insert the handle and the
washer and tie a single knot as shown in (photo 11).
11
!
ATTENTION!
verify that the return spring does not reach the end
of the stroke. Exttract the rope completely and turn the wheel again to
check that it can make at least one turn before stopping.
This test is very important because the spring hasn’t been studied to
reach the end of the stroke and, if it happens, the spring will break.
Reassemble the starter in the engine and tight the 4 screws (M5) with
strength (see the tightening torque values table).
9.5- COOLANT LEVEL CHECK
Periodically check the cooling system: when the engine is cold the coo-
lant must reach half of the expansion tank (photo 12).
12
If necessary add some liquid, using the one specific for aluminium
radiator.
!
ATTTENTION:
never open the cap when the engine is hot, you
could burn.
9.6- COOLING SYSTEM EMPTYING
If necessary empty the cooling system by unscrewing the proper screw
(see photo 13) and collect the leaking liquid.
13
Remove the cap to make this operation easier.
!
ATTENTION:
Do not empty it when the engine is hot, you could
burn.
9.7- COOLING SYSTEM FILLING
Fill in the cooling system using coolant specific for aluminium radiator
till ½ of the expansion tank (photo 12). For systems with radiator in-
stalled under the engine, make the air exit from the breather hole of the
90° pipe fitted on the head (item 928.225.004) or from the breather
928.225.006 (see exploded view “B”).
!
CAUTION!
If it is necessary to install the engine radiator the en-
gine, please carefully follow exploded view B to avoid a drain pipe.
10- HOW TO BEHAVE IN FLIGHT
Maximum acceleration is recommended only to take off (full power) or
when really necessary!
In order to avoid a poor mixture from acceleration/ascent to level flight
conditions, loosen the engine till a descending phase and then gradually
accelerate again till achieving a level flight or a glide angle or a rise
angle wished. In this way you will be sure to maintain firm and effi-
cient the carburation, avoiding being over rpm with a minimum valve/
throttle opening.
We remind you that two stroke engines do not stand constant range for
a long time too much. Take care of your engine by varying now and
then the rpm range. In this way the engine will have constant perfor-
mance and a good elasticity improving its working during the time.
10.1- TEMPERATURE THERESHOLDS
Your engine is equipped with a thermocouple to read the water
temperature to which it is possible to connect a specific instrument
(928.830.003) that detects the water temperature, the rpm and the
operation hours (not supplied) (Standard operating temperatures: min.
55°, max. 90°)
If you use the engine in cold weather conditions and the water tempe-
rature does not reach the minimum one of 55° we suggest you should
install a thermostat with 60° opening (code 928.830.009).
Eventually the EGT temperature can be checked using the optional ther-
mocouple ite. 928.830.014, to insert in its housing on the exhaust
(photo 14).
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The EGT temperature detected in standard conditions of use should be
around 550°-650°, maximum temperature 680°.
11- ENGINE FITTING ON THE FRAME
Fix the engine into the frame using the two h. 60 aluminium spacers
supplied which must be positioned in the bottom. Fit the spark plug on
the head and the water connection with the two screws and OR provided.
Place the propeller mounting flange and secure it with the supplied nut
using a 19 bush and lock it with a torque wrench to 80 N.m.
Connect the fuel pipe to the tank. To prevent any residue of dirt
entering the carburetor it is recommended to put a fuel filter (item
928.468.002). Furthermore connect a breather pipe from the reservoir
system to the tank. Rotate the filter box and fix it firmly to the frame
using the proper .
COOLING SYSTEM
We recommend you should install the radiator in the higher side than
the cylinder (see exploded view A). Fix the bracket supplied between
the two upper vibration-dumping mountings and the frame (see pic.15).
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Fit the two rubbers on the bracket and place the radiator. To fix the
radiator in the top side a bracket and a rubber are provided.
Using the special steel clamp place and fix the expansion tank at least
50 mm. above the radiator. Cut to size the water pipes and mount them.
Close the supplied clamps using special pliers for its fitting (photo 16).
