Ski-Doo Formula 500 1998, Shop Manual

Page: 342 / 398

10-02-3
Section 10 TECHNICAL DATA
Subsection 02 (ENGINES)
VEHICLE MODEL FORMULA Z 670 SUMMIT 500 SUMMIT 583 SUMMIT 670
ENGINE TYPE 670 494 583 670
Number of Cylinders 2 2 2 2
Bore mm (in) 78.0 (3.071) 69.5 (2.736) 76.0 (2.992) 78.0 (3.071)
Stroke mm (in) 70.0 (2.760) 65.8 (2.59) 64.0 (2.520) 70.0 (2.760)
Displacement cm 3 (in 3 ) 668.97 (40.82) 499.3 (30.47) 580.7 (35.44) 668.97 (40.82)
Compression Ratio (corrected) 6.2 6.8 6.7 6.2
Maximum Power Engine Speed
➀
± 100 RPM 7700 7800 7800 7700
Piston Ring Type 1 st /2 nd ST/R ST/R ST/N.A. ST/R
Ring End Gap
New
Wear Limit mm (in)
mm (in) 0.25 (.010)
1.0 (.039)
0.25 (.010)
1.0 (.039)
0.25 (.010)
1.0 (.039)
0.25 (.0098)
1.0 (.039)
Ring/Piston Groove Clearance
New
Wear Limit mm (in)
mm (in) 0.04 (.0016)
0.2 (.0079)
0.04 (.0016)
0.2 (.0079)
0.04 (.0016)
0.2 (.0079)
0.04 (.0016)
0.2 (.0079)
Piston/Cylinder Wall Clearance
New
Wear Limit mm (in)
mm (in) 0.10 (.0039)
0.15 (.0059) 0.11 (.0043)
0.15 (.0059) 0.11 (.0043)
0.15 (.0059) 0.10 (.0039)
0.15 (.0059)
Connecting Rod Big End Axial Play
New
Wear Limit mm (in)
mm (in) 0.39 (.0156)
1.2 (.0472)
0.39 (.0156)
1.2 (.0472)
0.39 (.0154)
1.2 (.0472)
0.39 (.0154)
1.2 (.0472)
Maximum Crankshaft End-play
➁
mm (in) 0.3 (.012) 0.3 (.012) 0.3 (.012) 0.3 (.012)
Maximum Crankshaft Deflection mm (in) 0.08 (.0031) 0.08 (.0031) 0.08 (.0031) 0.08 (.0031)
Rotary Valve Timing
➂
and P/N 420 924 XXX
Opening
Closing
144° – 72°
500
135° – 64°
509
135° – 64°
509
144° – 72°
500
Magneto Generator Output W 220 220 220 220
Ignition Type CDI CDI CDI CDI
Spark Plug Make and Type NGK BR9ES NGK BR9ES NGK BR9ES NGK BR9ES
Spark Plug Gap mm (in) 0.45 (.018) 0.45 (.018) 0.45 (.018) 0.45 (.018)
Ignition Timing BTDC
➃
mm (in) 1.93 (.076) 1.81 (.071) 1.75 (.069) 1.93 (.076)
Trigger Coil
➄
Ω
190 – 300 190 – 300 190 – 300 190 – 300
Generating Coil
➄
Ω
10 – 17 10 – 17 10 – 17 10 – 17
Lighting Coil
➄
Ω
0.20 – 0.35 0.20 – 0.35 0.20 – 0.35 0.20 – 0.35
High Tension Coil
➄
Primary
Ω
0.3 – 0.7 0.3 – 0.7 0.3 – 0.7 0.3 – 0.7
Secondary k
Ω
8 – 16 8 – 16 8 – 16 8 – 16
Carburetor Type PTO/MAG 2 x VM 40 102
VM 38 (H.A.C.)
384/385
VM 38 (H.A.C.)
388/389
VM 40 (H.A.C.)
103/104
Main Jet PTO/MAG 290 350/330 330/320 380/370
Needle Jet 224 AA-3 480-Q6 480 P-8 224 AA-4
Pilot Jet 60 75 75 75
Needle Identification
— clip position
7EDY1-3 6DHY48-4 6FEY-2 7DPI1-3
Slide Cut-away 2.5 2.5 2.5 2.5
Float Adjustment ± 1 mm (± .040 in) 18.1 (.71) 18.1 (.71) 18.1 (.71) 18.1 (.71)
Air Screw Adjustment ± 1/16 Turn 2.25 2.0 2.25 2.25
Idle Speed ± 200 RPM 1700 1800 1800 1900
Gas Type/Pump Octane Number Unleaded/87 Unleaded/87 Unleaded/87 Unleaded/87
Gas/Oil Ratio Injection Injection Injection Injection
Type Liquid Liquid Liquid Liquid
Axial Fan Belt Adjustment
Deflection
➅
mm (in) N.A. N.A. N.A. N.A.
Force kg (lbf) N.A. N.A. N.A. N.A.
Thermostat Opening Temperature °C (°F) 42 (108) 42 (108) 42 (108) 42 (108)
Radiator Cap Opening Pressure kPa (PSI) 90 (13) 90 (13) 90 (13) 90 (13)
ENG
INE C
O
LD
N•
m (
lb•
ft
)
Drive Pulley Retaining Screw
➆ ➆ ➆ ➆
Exhaust Manifold Nuts or Bolts 23 (17) 23 (17) 23 (17) 23 (17)
Magneto Ring Nut 125 (92) 125 (92) 125 (92) 125 (92)
Crankcase Nuts or Screws
M6
M8 9 (6.5)
29 (21)
9 (6.5)
29 (21)
9 (6.5)
23 (17)
9 (6.5)
29 (21)
Crankcase/Engine Support Nuts or Screws 39 (29) 39 (29) 39 (29) 39 (29)
Cylinder Head Nuts 29 (21) 29 (21) 29 (21) 29 (21)
Crankcase/Cylinder Nuts or Screws 29 (21) 29 (21) 29 (21) 29 (21)
Axial Fan Shaft Nut N.A. N.A. N.A. N.A.