2-18 PERIODIC MAINTENANCE

Periodic Maintenance Procedures

•Back out the same number of turns counted when first turned in. This is to set the screw to its original position.

NOTE

○A throttle body has different “turns out” of the bypass screw for each individual unit. When setting the bypass screw, use the “turns out” determined during disassembly. Use the specifications in this manual only if the orig-

•Repeat the same procedure for other bypass screws.

•Repeat the synchronization.

If the vacuums are correct, check the output voltage of the main throttle sensor (see Output Voltage Inspection of Main Throttle Sensor in the Fuel System (DFI) chapter).inal number is unknown.

Main Throttle Sensor Output Voltage Connections to ECU

Meter (+) → Y/W lead (terminal 2) Meter (–) → BR/BK lead (terminal 14)

Standard:

0.99 1.03 V DC (at idle throttle opening)

If the output voltage is out of the range, check the throttle input voltage (see Input Voltage Inspection of Main Throt-

•tle Sensor in the Fuel System (DFI) chapter).

Remove the vacuum gauge hoses and install the vacuum hoses and rubber caps on the original position as shown. Vacuum Switch Valve Hose (small) [A]

Inlet Air Pressure Sensor Hose [B]

Front [C]

Air Cleaner Element Cleaning

NOTE

○In dusty areas, the element should be cleaned more frequently than the recommended interval.

○After riding through rain or on muddily roads, the element should be cleaned immediately.

WARNING

If dirt or dust is allowed to pass through into the throttle assy, the throttle may become stuck, possibly causing accident.

CAUTION

If dirt gets through into the engine, excessive engine wear and possibly engine damage will occur.

WARNING

Clean the element in a well-ventilated area, and take care that there are no sparks or flame anywhere near the working area; this includes any appliance with a pilot light.

Because of the danger of highly flammable liquids, do not use gasoline or a low flash-point solvent to clean the element.

PERIODIC MAINTENANCE 2-19

Periodic Maintenance Procedures

•Remove the fuel tank (see Fuel System (DFI) chapter).

•Remove the fuel tank bracket bolts and bracket [A].

•Remove:

• Air Cleaner Duct Holder Screws [A]

Remove the air cleaner duct holder [B] backward.

•Clean the element by tapping it lightly to loosen dust.

•Blow away the remaining dust by applying compressed air [A] from the outside to the inside (from the clean side

•to the dirty side).

Visually inspect the element for no tears or no breaks and inspect the sponge gaskets [B] also.

If the element or gasket has any tears or breaks, replace the element.

•Install the element [A] with the flat side [B], facing for-

•wards.

Fit the tongue [C] of the air cleaner duct holder into the slot of the housing the air cleaner duct holder.

Torque - Air Cleaner Duct Holder Screws: 3.8 N·m (0.39 kgf·m, 34 in·lb)