MAINTENANCE
Final setting of the idling speed T
Adjust the idling speed with the screw T, If it is necessary to readjust. First turn the idle speed adjusting screw T clockwise until the cutting attachment starts to rotate/ move.
Then turn, counter- clockwise until the cutting attachment stops. A correctly adjusted idle speed setting occurs when the engine runs smoothly in every position. It should also be good margin to the rpm when the cutting attachment starts to rotate/move.
CAUTION! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the cutting attachment stops. Do not use the machine until it has been properly adjusted or repaired.
High speed needle |
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H |
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The high speed needle affects |
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the machine’s power, speed, |
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temperature and fuel |
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consumption. A too lean |
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adjustment on the high |
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speed needle H (the high |
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speed needle H is screwed in |
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too much) gives a too high |
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speed resulting in engine |
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damage. Do not allow the |
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engine to run at full speed |
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for more than 10 seconds. |
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Apply full throttle and turn |
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the high speed needle H |
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slowly anticlockwise until |
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the engine runs unevenly. |
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The high speed needle H is |
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then turned slowly clockwise |
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a little until the engine runs |
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smoothly. |
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Note the engine should be |
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run unloaded when | H | |
adjusting the high speed | ||
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needle. Therefore dismantle |
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the cutting equipment, nut, |
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support flange and disc drive |
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before adjusting the high speed needle. The high speed needle is adjusted correctly when the machine ‘splatters’ a little . If the machine smokes heavily at the same time as it ‘splatters’ heavily the adjustment is too rich.
NOTE! For optimum setting of the carburetor, contact a qualified servicing dealer who has a revolution counter at his disposal.
Correctly adjusted carburetor
A correctly adjusted carburetor means that the machine accelerates without hesitation and the machine
A too lean adjusted high speed needle H gives lower power = less capacity, bad acceleration and/or damage to the engine. A too rich adjustment of the two speed needles L and H gives acceleration problems or too low working speed.
Adjusting the start throttle speed
The correct start throttle speed is set by means of an adjuster on the rear of the handle next to the cable. Use this screw (4 mm Allen screw) to increase or decrease the start throttle speed.
Proceed as follows:
1. Run the machine at idle.
2. Press the start throttle lock as described under the heading ”Starting and stopping”.
3.If the start throttle speed is too low (below 4000 rpm), turn the adjuster screw A clockwise until the cutting attachment starts to rotate. Then turn A clockwise a further 1/2 turn.
4.If the start throttle speed is too high, turn the adjuster screw A anticlockwise until the cutting attachment stops. Then turn adjuster screw A clockwise a further 1/2 turn.
CAUTION! Contact your servicing dealer, if the idle speed setting cannot be adjusted so that the cutting attachment stops. Do not use the machine until it has been properly adjusted or repaired.
English – 25
