Kawasaki Concours ZG1000 Valves

Valve Adjustment Procedure
Pointer Valve Adjustment Procedure Sheet 1 Px44 KB Download
Pointer Valve Adjustment Movie 1 Px75 MB
O-ring, 15mm
Valve; Intake
Valve; Exhaust
Retainer; Valve Spring
Arm; Rocker
Shaft; Rocker, L=343
Seat; Spring, 12.1 x 16.2 x 0.5
Seat; Spring, 17.5 x 23.8 x 0.5
Spring; Engine Valve, Inner
Spring; Engine Valve, Outer
Screw, 7mm
Nut, 7mm
Seal; Oil, RVC2 5.5 x 8.5 x 8.3
Plug, 14 x 11.5
Spring; Rocker Arm




Prep:   Feeler Gauges                       Cool Engine (3 hours or until <95ºF)

        #3 Phillips Screwdriver             Valve Cover Gasket

        Straight Slot Screwdriver           Timing Cover Gasket

        8 mm Socket or Wrench               Locktite 242

        10 mm Socket or Wrench              In: 0.005 – 0.007in (0.13 – 0.18mm)

        24 mm Socket or Wrench              Ex: 0.007 – 0.009in (0.18 – 0.23mm)




1.        Remove body fairing panels

Remove lower fairing, Lt/Rt side and inner fairings. Also remove the bolt attaching the Lt side of the main fairing to the main fairing stay. This bolt is located at the bottom edge of the main fairing, and is removed to gain clearance for removal and installation of valve cover. Use the #3 driver to remove the fairing screws.


2.        Remove fuel tank

In addition to the two 10mm bolts at the back of the tank, there are 5 items that must be disconnected: 2 hoses from the petcock, on the Lt side (the outboard hose is the fuel line, and the inboard hose is the vacuum line);  a fuel drain hose from the fuel level sensor, on the Rt side underneath;  an electrical connector (unplug it) for the circuit connected to the fuel level sensor, on the right side;  and one fuel vent hose, at the back of the tank (California models have 3 hoses).  There is a 2-sided rubber grommet in each bolt hole at the back of the tank. A rubber o-ring (actually more like a washer) is press-fitted around the very bottom of each grommet. This 0-ring will fall off easily and special care must be taken to avoid losing them.


a.   Remove the 2 bolts at the rear of the tank.

b.   Turn fuel tap to ON position.

c.   Pull the hoses off the tank (Left=2, Right=1, Rear=1 or 3 if CA model).

d.   Disconnect fuel level sensor lead (on the right).

e.   Tilt the tank out the rear of frame.


3.        Remove left and right side fairing duct seal assemblies

Use the #3 screwdriver to remove 3 screws on both the left and right sides.


4.        Vacuum top of engine to remove debris before removing items from top of engine


5.        Remove the ignition coils (ICs)

There are 2 of these, over the engine on left and right side. Plug wires for cylinders #1 and #4 are connected to the left, and plug wires for cylinders #2 and #3 are connected to the other right IC. These must be unscrewed from the terminals at the front of the ICÕs.


Left IC: Remove the red wire from the positive (right) terminal, and the black wire from the negative (left) terminal at the back of the IC. Also remove the ground wire, connected to the bolt securing the front of the IC.


Right IC: Remove the red wire from the positive (right) terminal, and the green wire from the negative (left) terminal at the back of the IC. This IC does not have a ground wire.


6.        Remove the air suction valve from the air hoses (breather system)

Remove the breather system as a unit, by removing the four (2 each reed valve cover) 10mm bolts. Do not disconnect any hoses except the skinny little one at the vacuum switch valve. Pry the breather covers loose by lifting up on the hoses, and then work the entire assembly forward, extracting the large breather hose out of the airbox.


7.        Remove the reed valves

Carefully remove the reed valves in each breather port, noting position of reeds for reassembly. On some motorcycles, the reed valves may be secured to the top of the valve cover with silicon adhesive. In this case, do not pry out the reed valves, since they will not fall out while removing the valve cover.


8.        Remove the valve cover

Note: There is a hose clamp that attaches a hose running under the top center frame. The screw on the clamp reduces clearance and can cause problems when removing the cylinder head cover. If so, loosen and spin the clamp to reposition the clamp screw.


Use a 10 mm socket to remove the 6 valve cover bolts. There are washers with a removable metal cover under the heads of the bolts. Some may stick to the cylinder head cover when the bolts are removed. Make sure that all washers and their metal covers are removed with the bolts. Otherwise, they will probably fall into the engine when the cover is removed


To help break the seal of the cover to the head, hand thread 2 of the reed valve cover bolts into the valve cover, 1 on the left side reed valve area, and the other on the right side reed valve area. Use this as a pry point. Wrap a rag around one of the bolts, grasp the bolt with a channel lock, and pry the cover loose. Then use the bolt on the other side to completely pry off the valve cover. Once loose, use a flashlight to carefully inspect the cylinder head gasket. It either has to stay with the motor or come off with the cover.


Remove valve cover from left side of motorcycle. Lift up on the valve cover, and pivot the cover counter clockwise around an imaginary pivot point located about 6Ó behind the valve cover. It may be required to have an assistant hold the left side of the upper fairing about ¾Ó away from the bike, to gain the necessary clearance.


9.        Remove the pulsing cover

Put a catch pan under the engine near the flywheel, to catch the small amount of oil that will drip out when the pulsing cover is removed. Use an 8 mm socket to remove the bolts.


10.     Measure and adjust the valves

Using a 24 mm wrench on the crankshaft rotation nut, rotate the flywheel counter clockwise so that either the 1.4 or 2.3 indicators on the flywheel are aligned with the timing mark just to the right of the flywheel. The timing mark is a small metal arrow and hard to see at first.


Adjust all four valves for the piston that is at TDC on the compression stroke. If the 1.4 indicator is aligned with the timing mark, then this will be either piston #1 or #4. If the 2.3 indicator is aligned, then this will be either piston #2 or #3. Look at the cam lobes to determine the appropriate piston. Both the intake and exhaust lobes will be pointing away from the rocker arm. As a result, all valves for this piston will be completely closed. To adjust valve clearance, loosen the locknut with a 10mm box wrench, and turn the adjusting screw with a screwdriver, or use a special valve-adjusting tool. After clearance is set, tighten the locknut to 18.0 ft-lb. Try to adjust the 2 valves that share the same rocker arm as close to the same clearance as possible, to avoid twisting forces on the rocker arm shaft.


Adjust the intake valve gaps to .006 in.    Intake valves face the rear.

Adjust the exhaust valve gaps to .008 in.   Exhaust valves face the front.


After adjusting the valves for a piston, rotate the flywheel 180¼ counter clockwise, so that the adjacent indicator mark is aligned with the timing mark. Look at the cam lobes to determine the appropriate valves to be adjusted, and adjust these valves.


The piston firing order is: 1-2-4-3


Repeat until the valves for all cylinders are adjusted.

11.    Install the valve cover

Inspect gaskets before installing and replace if necessary. Clean silicon seal and reapply silicon to area shown on page 4-2 of Service Manual (see note SS). Before seating the valve cover, use a flashlight to inspect the placement of all gaskets and knock pins.


Use a 10 mm socket to install the valve cover bolts and torque to:

9.8 N-m, or 87 in lbs or 7.25 ft-lb


Note: this is a "light" torque and use of a torque wrench is recommended to prevent over tightening, which could result in damaged gaskets and cam journals.


12.    Install the spark plugs

Standard plug is NGKD8EA or NDX24ES-U.

Set the gap to 0.024 in – 0.028 in (0.6mm – 0.7mm).

Toque to: 10 ft-lb, or 120 in-lb.


13.    Install the reed valves.

If these were removed, reinstall on the top of the valve cover so that the wide part of the reed valve goes toward the front of the engine, and the smaller, tapered end of the reed valve goes toward the rear.


14.    Install the air suction valve and hoses

Before installing, give all hoses and wires a shot of Armor All to keep them rubbery and happy. Use a liberal dose of Armor All as a lubricant when installing the breather hose into the air box.


15.    Install the ignition coils

Install the right side ignition coil (IC) first, which is connected to the spark plugs for cylinders #2 and #3.


Install the spark plug wires to the plugs and screw the plug wires to the ICs. Note that there is a small arrow molded into each cable boot. When snapping each boot onto a spark plug, orient the wire so that the arrow points toward the front of the bike. This insures that each plug wire is properly oriented to avoid stretching or kinking of the plug wire.


16.    Install pulsing cover

If necessary replace the pulsing cover gasket. Apply Locktite 242 to the bolt at the 10 oÕclock position and the one next to it clockwise.  Use an 8 mm socket to tighten the bolts, and torque each bolt to 60 in-lb.


17.    Proceed with other maintenance items as required

Before installing the fuel tank, perform other appropriate maintenance items, such as: synchronizing carburetors, replacing fuel filter, and checking tightness of the main fairing bolt.


18.    Install the fuel tank

After installing the rubber dampers and pads, then install the tank, ensuring that the half circle tabs on each side on the bottom-front of the tank engage the rubber pads on each side of the frame tube. Check that hoses are not kinked. Install the four hoses (6 hoses for CA model) and the electrical connector. Install bolts at back of tank, taking care not to strip the threads.


19.    Install left and right side fairing duct seal assemblies


20.    Install body fairing panels

Remember to also install the main fairing bolt removed to gain clearance for removal/installation of valve cover.