Spark plugs

Inspect at 6000 km (4000 miles or 12 months), 18000 km (11000 miles or 36 months) and replace every 12000 km (7500 miles or 24 months).

• Remove the spark plugs with the spark plug wrench.

The plug gap is adjusted to 0.6 - 0.7 mm (0.02 - 0.03 in). The gap is correctly adjusted by using a thickness gauge. When carbon is deposited on the spark plug, remove the carbon by using a spark plug cleaning machine or by carefully using a tool with a pointed end. If the electrode is extremely worn or burnt, replace the plug. Also replace the plug if it has a broken insulator, damaged thread, etc.

NGK CR8EK as listed in the table should be used as the standard plug. However, the heat range of the plug should be selected to meet the requirements of speed, actual load, fuel etc. If the plugs need to be replaced, it is recommended that plugs having a heat range closest to the standard plug in the table be selected. Remove the plugs and inspect the insulators. Proper heat range would be indicated if all insulators are light brown in color. If they are baked white, they should be replaced by a cold type and if blackened by carbon, by a hot type.

Recommended spark plug

09930-10120: Spark plug socket wrench set 09930-14530: Universal joint

09914-24510: T-handle

09900-20803: Thickness gauge

o.6 - o.7 mm " '/ nI" ' o.6 _ o.7 m m

(0.02 - 0.03 2 - 0.03 in)

CAUTION:

Confirm the thread size and reach when replacing the plug. If the reach is too short, carbon will be deposited on the screw portion of the plug hole and engine damage may result.

NOTE:

uR" type spark plug is installed for some specifications. uR" type spark plug has a resister located at the center electrode to prevent radio noise.

Replace at initially 1000 km (600 miles or 2 months) and every 6000 km (4000 miles or 12 months).

Oil should be changed while the engine is hot. Oil filter replace­ ment at the above intervals should be done together with engine oil change.

• Keep the motorcycle upright.

•

• Disconnect the oil pressure switch lead.

• Remove the oil filter cap @ by removing the three nuts.

• Replace the oil filter with new one.

NOTE:

Be sure to take care of 0-ring ® to prevent any damage and be sure that filter spring ® is properly in place.

• Apply grease lightly to the 0-ring ® of the oil filter cap @ before installation.

• Fit the drain plug CD securely, and add fresh oil through the

• Install the filler cap ®·

• Start up the engine and allow it to run for several minutes at idling speed.

• Turn off the engine and wait about one minute, then check the oil level through the inspection window ®· If the level is below the lower line, add oil to the upper line.

Inspect at initially 1000 km (600 miles or 2 months) and every 6000 km (4000 miles or 12 months).

Replace every 4 years.

Inspect the fuel line for damage and fuel leakage. If any defects are found, the fuel line must be replaced. (R efer to page 8-19.)

VAPOR HOSE............ CALIFORNIA MODEL ONLY

CARBURETORS

ENGINE IDLING SPEED

NOTE:

The engine idling speed should be adjusted when the engine is hot. The idling speed is different among the countries.

• Connect a tachometer.

• Start up the engine and set its speed at idle speed by turning throttle stop screw CD as follows.

Engine idle speed: 1400 ± 50 r/min... E-03, 22 and 33

1300 ± 100 r/min... The others

There should be 0.5 - 1.0 mm (0.02 - 0.04 in) play ® on the throttle cable. Adjust the throttle cable play with the following procedures.

• Loosen the lock nut CD and turn the adjuster ® in or out

until the specified play is obtained.

• Tighten the lock nut CD while holding the adjuster. Throttle cable play ®: 0.5 - 1.0 mm (0.02 - 0.04 in)

WARNING:

After the adjustment is completed, check that handlebar movement does not raise the engine idle speed and that the throttle grip returns smoothly and automatically.