Page 14 of 16
97-6
TECHNICAL DATA
TECHNICAL DATA
A dot (•) on right indicates changes from 1996 model.
NOTE:
See end of specifications for foot notes.
MODELS
MX Z 440
MX Z 583
Engine Type
454
583
Maximum HP RPM
➀
±100 RPM
8000
7900
Rotary Valve
P/N
Opening (BTDC)/
Closing (ATDC)
420 9245 02
146°/65°
420 9245 02
140°/71°
Carburetor Type
PTO VM 34 - 492
MAG VM 34 - 493
•
•
PTO VM 40 - 92
MAG VM 40 - 93
•
•
Main Jet
PTO 240/MAG 210
•
PTO 280/MAG 260
•
Needle Jet
P-8 (159)
AA-2 (224)
Pilot Jet
40
60
•
Needle Identification — Clip Position
6FJ43
•
7ECY1
•
Slide
Cutaway
2.5 2.5
Float Adjustment
±1 mm (in)
23.9 (.941)
18.1 (.71)
Air Screw Adjustment
± 1/16 turn
1/2
2
•
Idle Speed RPM
±200 RPM
1700
•
1800
•
Gas Grade/Octane Number
(R + M)/2
Regular Unleaded/87
Regular Unleaded/87
Gas/Oil Ratio
Oil Injection
Oil Injection
Ignition Timing BTDC
➁
mm
(in)
1.48 (.058)
1.75 (.069)
Trigger Coil Air Gap
mm
(in)
0.55 - 1.45 (.022 - .057)
0.55 - 1.45 (.022 - .057)
Gear Ratio
teeth
23/44
25/44
Engagement Speed
± 100 RPM
4400
4400
•
Drive Pulley Calibration Screw Position
3
3
•
Pulley Distance
Z
(+ 0, – 1) mm
(+ 0, – 1/32) in
16.5
(21/32)
Offset
X
± 0.4 mm
(± 1/64 in)
35.0
(1-3/8)
Y
Dimension Y must exceed X from
1mm (1/32in) to 2 mm (5/64 in)
Drive Belt Adjustment
Deflection
mm
(in)
32
(1-1/4)
Force
➂
kg (lbf)
11.34 (25)
•
Driven Pulley Preload
±0.7 kg
(±1.5 lbf)
7.0 (15.43)
•
Drive Chain Tension
Fully tighten adjusting screw by hand then back OFF only
far enough for hair pin installation
Track Adjustment
Deflection
mm
(in)
40 to 55 (1-9/16 to 2-5/32)
with a 7.3 kg (16 lb)
downward pull
•
30 to 40 (1-3/16 to 1-9/16)
with a 7.3 kg (16 lb)
downward pull
•
