IKRA GMTI 33 Manuel D'utilisation page 64

If there is a noticeable loss of engine power
1 Remove the fixing screw of the air filter cover (9).
2. Clean the filter using soap and water
Never use petrol or benzene !
3. Let the Filter dry in the air.
4. Now put the filter in again proceeding the otherway
round.
Checking the Spark Plug
Wrong fuel mix (too much engine oil in the gasoline), a
dirty air filter and unfavorable running conditions (mostly
at part throttle etc.) affect the condition of the spark plug.
These factors cause deposits to form on the insulator
nose which may result in trouble in operation.
If engine is down on power, difficult to start or runs poorly
at idling speed, first check the spark plug.
• Remove spark plug.
• Clean dirty spark plug.
• Check electrode gap (A) and readjust .
• Use only resistor type spark plugs of the approved range.
Rectify problems which have caused fouling of spark plug:
• Too much oil in fuel mix.
• Dirty air filter
• Unfavorable running conditions, e.g. operating at part
load.
Fit a new spark plug after approx. 100 operating
hours or earlier if the electrodes are badly eroded.
To reduce the risk of fire and burn injury, use only
spark plugs authorized by Sunray. Always press
spark plug boot (1) of the proper size. (Note: If
terminal has de-tachable SAE adapter nut, it must
be attached. (2) snugly onto spark plug terminal.
A loose connection between spark plug boot and
ignition wire connector in the boot may create arc-
ing that could ignite combustible fumes and cause
a fire.
Rewind Starter
To help prolong the wear life of the starter rope, ob-
serve the following points:
• Pull the starter rope only in the direction specified.
• Do not pull the rope over the edge of the guide bushing.
• Do not pull out the rope more than specified since it
might break.
• Do not let the starter grip snap back, guide it slowly
into the housing. See also chapter "Starting / Stopping
the Engine"!
Replace a damaged starter rope in good time or have
it replaced by your Sunray dealer!
TUNING THE CARBURETTOR
The carburettor is tuned by the manufacturer to achieve
maximum performance in all situations, with a minimum
emission of toxic gas in compliance with the regulations
in force.
In the case of poor performance contact your Dealer for
a check of the carburetion and engine.
• Tuning minimum speed
WARNING! The cutting device must not move
when the engine is running idle. If the cutting
device moves when the engine is running idle,
contact your dealer to correctly regulate the
engine.
GB-20