Ribimex PRMPC211/33 Original Instructions Manual page 29

6.2.2- Sediment cup and fuel tank filter
a) Sediment cup cleaning
• Move the fuel cock to the OFF position, then remove the fuel sediment cup and O-ring.
• Wash the sediment cup and O-ring in nonflammable solvent and dry them thoroughly.
• Place the O-ring in the sediment cup and then install and tighten the sediment cup securely.
Move the fuel cock to the ON position, and check for leaks. Replace the O-ring if there is any
leakage.
b) Fuel tank cap & filter
• Remove the fuel tank cap and filter.
• Wash the filter in nonflammable solvent and dry it thoroughly.
• Replace filter and cap
Remark:
If the breather valve of the fuel tank filter and the fuel tank cap are clogged up, the engine may not
work normally or run at an unsteady speed.
Operating the engine for a long time without a fuel filter could lead to the scuffing of cylinder bore.
6.2.3- Spark plug
ATTENTION: never touch the spark plug immediately after the engine is stopped to avoid getting
burnt by the high temperature.
a) Remove the spark plug
b) Please remove or brush the dirt in the electrode with a brush every 25 hours.
Adjust the gap of the spark plug electrode gap between 0.7-0.8mm.
Remark: Too much suction of the fuel or using wasted or regenerated oil can pollute the spark plug
electrode and make it hard to start the engine.
6.2.4- Air-cooling passage
Please check the air-cooling passage and cylinder radiator and remove the attached impurity after it
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