Ski-Doo FORMULA S 1997, Shop Manual

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09-02-3
Section 09 TECHNICAL DATA
Sub-Section 02 (ENGINES)
VEHICLE MODEL SUMMIT 500 SUMMIT 583 SUMMIT 670
GRAND TOURING
500
ENGINE TYPE 494 583 670 494
Number of Cylinders 2 2 2 2
Bore mm (in) 69.5 (2.736) 76.0 (2.992) 78.0 (3.071) 69.5 (2.736)
Stroke mm (in) 65.8 (2.59) 64.0 (2.520) 70.0 (2.760) 65.8 (2.59)
Displacement cm 3 (in 3 ) 499.3 (30.47) 580.7 (35.44) 668.97 (40.82) 499.3 (30.47)
Compression Ratio (corrected) 6.8 6.7 6.2 6.8
Maximum Power Engine Speed
➀
± 100 RPM 7750 7800 7700 7800
Piston Ring Type 1 st /2 nd ST/R ST/N.A. ST/R ST/R
Ring End Gap
new
wear limit mm (in)
mm (in) 0.25 (.010)
1.0 (.040)
0.25 (.010)
1.0 (.040)
0.25 (.0098)
1.0 (.0394)
0.25 (.010)
1.0 (.040)
Ring/Piston Groove Clearance
new
wear limit mm (in)
mm (in) 0.04 (.0016)
0.2 (.008)
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) 0.11 (.0043)
0.15 (.006)
0.05 (.0020)
0.15 (.0059) 0.08 (.0031)
0.15 (.0059) 0.11 (.0043)
0.15 (.006)
Connecting Rod Big End Axial Play
new
wear limit mm (in)
mm (in) 0.39 (.0156)
1.2 (.048)
0.39 (.0154)
1.2 (.0472)
0.39 (.0154)
1.2 (.0472)
0.39 (.0154)
1.2 (.048)
Maximum Crankshaft End-play
➁
mm (in) 0.3 (.012) 0.3 (.0118) 0.3 (.0118) 0.3 (.012)
Maximum Crankshaft Deflection mm (in) 0.08 (.0032) 0.08 (.0031) 0.08 (.0031) 0.08 (.0032)
Rotary Valve Timing
➂
and P/N 420 924 XXX
Opening
Closing
135° – 64°
509
135° – 64°
509
145° – 71°
500
135° – 64°
509
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) 1.81 (.071) 1.75 (.069) 1.93 (.076) 1.81 (.071)
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
VM 38 (HAC)
363/364
VM 38 (HAC)
365/366
VM 40 (HAC) 90/91 VM 38 347/348
Main Jet PTO/MAG 400/380 340/330 380/370 330/310
Needle Jet 480-Q0 480 Q-6 224 AA-4 480-P4
Pilot Jet 75 75 75 50
Needle Identification
– Clip Position
6FEY1-3 6BGY15-4 7DPI1-3 6FEY1-3
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 2.0 2.25 2.25 1.125
Idle Speed RPM ± 200 RPM 1800 1900 1900 1800
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 ➃
Exhaust Manifold Nuts or Bolts 23 (17) 23 (17) 23 (17) 23 (17)
Magneto Ring Nut 125 (92) 125 (92) 125 (92) 100 (74)
Crankcase Nuts or Screws
M6
M8 9 (6.5)
29 (21)
9 (6.5)
29 (21)
9 (6.5)
29 (21)
9 (6.5)
23 (17)
Crankcase/Engine Support Nuts or Screws 40 (29) 40 (29) 40 (29) 40 (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.