BOMBARDIER 1996 Ski-doo MX Z440 Handbook page 138

Section ENGINE PREPARATION
04
ENGINE
N P E S
1995 454
467
582
583 (Summit)
583 (STX, FZ)
670 (Summit, SS)
670 (Mach 1)
ENGINE
TYPES
1996 MX Z 440
Summit 500
Formula SLS
Touring 500
Summit 580
Formula Z
Formula STX
Formula STX LT
MX Z 583
Formula SS
GT 670 SE
Mach 1
Summit 670
DEGREES OF DURATION
On all engines, use TDC gauge (P/N 4141047 00).
04-36
VALVE
P/N
420924502
420924504
420924509
420924509
420924502
420924500
420924501
VALVE
420924502
420924509
420924502
420924502
420924500
420924501
420924500
ROTARY VALVE DURATION VS. PART NUMBER
1 17°
132°
147°
151°
1 59°
162°
164°
169°
TIMING
opening
146.8°
132°
129.5°
134°
140°
1 44°
145°
TIMING
opening
145°
134°
140°
139°
145°
145°
140°
PART NUMBER
924202
924200
924504
924205
924508
924509
924207
924209
924502
924220
924500
924501
closing
65.3°
52°
69.5°
65°
72°
76°
closing
64°
63°
70°
71°
76°