ENGINE MECHANICAL
SERVICE MANUAL NUMBER 22
90-860074--1 FEBRUARY 2002 Page 3A-61
24. AFTER COMPLETE ENGINE ASSEMBLY AND INSTALLATION, follow these
additional cylinder head angular torque instructions:
a. Operate engine at idle until water temperature reaches 70° C (158° F) and then
operate engine at 2000 rpm for approximately 20-30 minutes at operating
temperatures. Let the engine cool down completely (inoperative overnight, if
possible).
b. Remove valve covers.
c. Retorque the cylinder head bolts, as follows:
(1.)n torque sequence, and operating on only one bolt at a time, loosen each 14 mm
(center) bolt and then retorque to 30 N·m (22 lb-ft). Continue by tightening the
bolt through an angle of 65 Degrees and then through ANOTHER 65 Degrees
(130 Degrees total).
(2.)In sequence and without loosening, check torque on port and starboard 12 mm
(side) bolts to be 90 N·m (66 lb-ft)
d. Install valve covers.
CAUTION
Avoid component or engine failure. Cylinder heads require additional angular
torque and conventional torque application after the first 100 hours or first
operating season, whichever occurs first.
25. AFTER 100 HOURS, OR THE FIRST OPERATING SEASON, WHICHEVER OCCURS
FIRST, follow instructions a. - d.:
a. Remove valve covers.
b. In torque sequence and without loosening, tighten the 14mm (center) cylinder head
bolts through an angle of 15 degrees.
c. In sequence and without loosening, torque the 12mm (side) cylinder head bolts
through an angle of 15 degrees.
d. Install valve covers.
To Next Page
Loading...
Need help?
General