Spark Plug Inspection; Technical Maintenance; Fuel Filter - K&S BASIC KSB 21i S Owner's Manual

SPARK PLUG INSPECTION:

1. Remove the cap from the spark plug.
2. Remove the spark plug by means of a corresponding spanner.
3. Examine the spark plug.
If it is shattered – it is necessary to replace it. Recommended
replacement spark plugs – E6TC/E6RTC.
4. Measure the gap. It has to be within range 0.7 – 0.8 mm.
5. Place the spark plug in its place by means of a spark plug spanner.
6. Replace the spark plug cap.
1. Remove the screws, and then remove the cover,
and drain the fuel.
2. Hold and move up the clamp, then take off
the hose from the tank.
3. Take out the fuel filter.
4. Clean the filter with gasoline.
The engine and muffler will be very hot after the engine has been run. Avoid touching the engine and muffler while
they are still hot with any part of your body or clothing during inspection or repair.
IMPORTANT!
MUFFLER SCREEN AND SPARK ARRESTER
1. Remove the screws, and then pull outward on the areas of the cover.
2. Loosen the bolt and remove the muffler cap, the muffler screen and spark arrester.
3. Clean the carbon deposits on the muffler screen and spark arrester using a
wire brush.
4. Check the muffler screen and spark arrester. Replace them if damaged.
5. Replace the flame arrester.
6. Replace the screen and cover of the damper.
7. Replace the cover and tighten the screws.
Tip: Align the spark arrester projection with the hole in the
muffler pipe.
ATTENTION - DANGER!
1. Remove the fuel tank cap and filter.
2. Clean the filter with gasoline.
3. Wipe the filter and install it.
4. Install the fuel tank cap.
Be sure the fuel tank cap is tightened securely.

FUEL FILTER

TECHNICAL MAINTENANCE

5. Dry the filter and put it bank into tank.
6. Install the hose and clamp, then open
the fuel valve to check whether it is leak.
7. Install the cover and tighten the screws.
TECHNICAL MAINTENANCE
FUEL TANK FILTER
TECHNICAL MAINTENANCE
Never use the gasoline while smoking
or in the vicinity of an open flame.
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