Technical data

Milling the grooves

Set the cylinder head up in a vice.

WARNING! Use protective jaw pads to avoid

damaging any sealing surfaces.

Make sure that the cylinder head plane is com-

pletely clean.

Repair instructions

Press down the bit holder and tighten the lock screw

enough to press against the holder.

Put the dial gauge tip on the highest point of the bit

and turn the adjustment screw upwards until the cor-

rect value of bit height is obtained.

Tighten the lock screw.

NOTE! Check that the upper edge of the bit holder is

on the same plane as the cutter head. If it is not, the

dial gauge has turned one rotation too many.

Unscrew the lock screw a few turns and turn the ad-

justment screw upwards so that the bit holder can be

removed from the cutter head.

The bit holders are marked with a letter (A, A*, B, C

or D), and the corresponding letter is punched on the

cutter head, where the bits are to be installed.

NOTE! The two socket cap screws in the bit holder

must not be touched.

* 9999745, repair kit for cutting tool 9996481 and 9996482.

Install the bit holders in the cutter head, in accordance

with the letters, and with the grooves aligned towards

the lock screws. Adjust the bit height as instructed.

Put the guide plate of the tool on the cylinder head,

but do not tighten the nuts for the attachment screws.

Carefully put the cutting head on the guide plate, us-

ing rotating movements, so that the tool is centred on

the flame edge groove.

NOTE! Do not tighten the nuts for the attachment

screws too hard, this could pull the valve guides into

the cylinder head.

Set all bits to the specified depth, as in items 2 and 3.

Changing the bit set *