AL. CARBURETTOR ADJUSTMENT
The carburetor is adjusted for normal operationTo set high speed screw (H) : close screw (H)
during production. The carburetor has threeturning it clockwise without forcing .
adjustment possibilities:
L: The needle screw (L) governs the fuel flow atThen open screw 1 full turn (counterclockwise ).
low speed and also the acceleration from low
If the engine speed is too high open the screw
to full speed.
about 1/8 turn (counterclockwise )
To set low speed screw (L): close screw (L)I: The (I IDLE) screw controls the throttle opening
turning it clockwise without forcing .
to govern idle speed
-1
Then open screw 1 full turn (counterclockwise(2,800 min) adjust as necessary.
).
CAUTION: increased idle speed may cause blade
If acceleration is not smooth, open another 1/8or nylon string head movement.
turn to increase fuel flow .
For precise adjusting contact an authorised
H: The needle screw (H) governs fuel flow at highservice station which offers the latest in toll, parts
speed (throttle valve fully open).and technical assistance.
M. REGULAR MAINTENANCE
From time to time ensure all screws are tight.the electrode gap (0,5/0,6 mm.). Replace
Replace damaged, worn, cracked or warpedspark plug about every 100 working hours or
blades. Always make sure nylon string head orwhenever it is extremely encrusted. Heavily
blade have been assembled correctly (seeencrusted electrodes can result from an
sections NYLON STRING HEAD and BLADEincorrect carburetor setting or from wrong fuel
ASSEMBLY) and blade fastener is tightened.mixture (too much oil in the petrol) or a poor
quality of oil in the fuel mix. Check and correct.
1) AIR FILTER CLEANING
(at least every 25 working hours).4) FUEL FILTER
To change fuel filter remove the tank cap and
A dust clogged air filter may cause carburetor
pull out the filter with a piece of bent wire or
problems.
long forceps. Contact your Service Station for
This may prevent the engine from reaching itsgeneral servicing and cleaning of internal parts
maximum speed and cause high fuelat least once a year.This will reduce the
consumption and/or difficult starting.
possibility of unexpected problems and will
Remove filter cover as shown in figure 1.ensure maximum product life and efficiency.
Carefully clean the inside of filter box. The filter
REGULARLY: it is important, in order to avoid
can also be cleaned with compressed air.engine overheating, to remove dust and dirt
2) Every 50 working hours inject the gearcasefrom slots, gaps and from in between cylinder
with gear grease under high pressure throughfins using a wooden scraper.
hole (C).
LONG STORAGE: empty fuel tank and run
3) SPARK PLUGengine until dry.
From time to time (at least every 50 hours)
Store trimmer in a dry place.
remove and clean the spark plug and check
N. REPLACING NYLON LINE
1) Loosen the locking nut on the base of theREASSEMBLY
nylon head by turning it clockwise.5) Slide the end of the two lines into the grooves
2) Remove the base cover assembly. to hold the line temporarily.
Remove the empty spool from the housing and6) Position the spool back into the housing and
discard any remaining line.pull the line through the eyelets.
REWINDING NEW LINE7) Pull about 12cm (5ins) of line out on either side.
3) Prepare 2 lengths (8ft each) of 2.4 mm nylon8) Reassemble the nylon string head as
line. Thread 1 end of each line into the twoillustrated; mower gauge,spring and locking nut
holes on opposite sides of the spool. Pinch the(tighten in an anti-clockwise direction).
exposed ends flat with a pair of pliers to
9) N.B: In order to extend the nylon line as it
prevent them slipping through the hole.wears down, pull the mower gauge
4) Wind the two lines in the same directiondownwards and turn it in a clockwise direction
around the spool.to feed out the desired length of line.
10 |
ACEC
MCCULLOCH
