Repair manual

70000
101509
87051
86290
MAIN DATA TO CONTROL EXHAUST AND
DISCHARGE VALVE SPRING
- fit springs (6) and the upper plate (5);
- apply tool 99360263 (2) and block it with bracket (4);
tighten the lever (1) until cotters are installed (3),
remove tool (2).
VALVE SPRINGS
Fitting the valves and oil seal ring
Free spring height
Valve closed
Valve open
71724
To insert bushing (7), proceed as follows:
- Unscrew the grip (I) and the extensio n (N).
- Refit the gu ide (G) from th e inside as shown in the figure.
- Position the bushing on the drift (A) and bring it close
up to the seat, making the bushing hole match the
lubrication h ole in t he head. Drive it home.
The 7
th
bushing is driven in wh en t he reference mark (C)
is flush with the bushin g seat.
Before assembly, t he flexibility of th e valve springs must be
checked.
Compare the load and elastic deformat ion data with tho se
of the n ew springs given in the following figure.
Rear
Figure 93
Figure 94
Figure 95
Figure 96
Figure 97
Lubricate the valve stem and i nsert the valves in the
respective valve guides; fit the lower caps (1). Use tool
99360329 to fit the oil seal (2) on the valve guides (3) of the
exhaust valves; th en, to fit the valves, proceed as follows.
42
SECTION 4 - OVERHAUL AND TECHNICAL SPECIFICATIONS
F3C CURSOR ENGINES
Base - May 2007 Print P2D32C005 E