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(9) TAPPET ADJUSTMENT

Set the tappet at the lowest position to depress the valve. Then measure the clearance between the valve and

tappet stem, using a clearance gauge inserted into the clearance. (See Fig. 10-24.)

NOTE: As with the in take and exhaust valves, the clearance between the valve and tappet stem must be 0.08

- 0.12 mm.

GAUGE

Fig. 10-24

Fig. lo-25

INTAKE & EXHAUST VALVE VALVE SPRING

SPRING RETAINER

NOTE: If the clearance is smaller than that specified, slightly grind down the valve stem end using a grinder,

then measure the clearance.

If the clearance is larger than that specified, repace the valve with a new one. Spot the valve seat and use

some compound to adjust the clearance.

NOTE: After completing adjustment of tappet clearance, install the valve spring retainers, and then recheck

the tappet clearance.

Installing the valve spring retainer

Using the special tool, place the retainer over the

valve stem with the notch in the outside periphery

of the retainer kept toward the front.

FRONT

(10) INSTALLING THE CYLINDER HEAD

Fig. 70-26

Before reinstalling the cylinder head, be sure to remove carbon deposits from the combustion chamber, and

clean between the cooling fins. Also check the cylinder head for levelness.

NOTE: Replace the cylinder head gasket with a new one.

The cylinder head is installed using seven M6 x 32 mm bolts.

NOTE: Torque for each cylinder head bolt: 90 - 1 IO kg-cm

(11) INSTALLING THE SPARK PLUG

Torque for spark plug: 120 - 150 kg-cm

(12) INSTALLING THE CYLINDER BAFFLE

The cylinder baffle is installed to the crankcase, using the M6 x 20 mm screw and to the main bearing cover,

using the M5 x 10 mm screw.

The cylinder baffle and fuel line clamp are installed together to the crankcase.

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Robin R650 Service Manual

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