VALVE SUPPORT
BOSSES
ELECTRODE
BRACKET POINTS
TO THIS AREA
EXHAUST VALVE
The Exhaust Valve has to be installed with the notch (at rear) to the right. The Tab of Exhaust Valve and
the Backup Plate must be positioned between the two pins on the Exhaust Valve Plate. See Fig. 2 below.
INTAKE VALVE
The Intake Valve has to be installed with the notch (at rear) to the left. The Tab of Intake Valve Reed and
the Backup Plate must be positioned between the two pins on the Cylinder Head. See Fig. 1 below.
ACCELERATOR PLATE
Apply Loctite® Ultra Black 598 RTV three places ¼” long equally spaced around the circumference of the
accelerator plate to facilitate assembly. Accelerator plate Ref.#33 indention must line up with fuel feed
pin on head Ref. #32.
DRIVER BLADE
Ref. 49 Roll Pin and Ref. 50 Roll Pin must be installed with the Slots 180° apart. See Fig. 3 below.
HEAD TORQUE PATTERN
Each time head Ref. #32 is installed/reinstalled, a specific torquing pattern must be observed. Use the
diagram below and torque head to 55 to 65 in. lb. with hand torque wrench. See Fig. 4 below.
ELECTRODE BRACKET - Ref. 97
The electrode bracket should be assembled so the tip is in the area opposite the Valve Support, Ref. 41,
orientation bosses in the Head Assembly, Ref. 32, as shown in Fig. 1.
CFN250
SERVICE NOTES
Fig. 1
Fig. 2
Fig. 3
Fig
.
4
Ref. 50
Ref. 49
