Ski-Doo Formula S 1998, Shop Manual

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Section 10 TECHNICAL DATA
Subsection 02 (ENGINES)
10-02-1
VEHICLE MODEL TUNDRA II LT
TOURING E,
SKANDIC 380,
FORMULA S,
FORMULA S ELEC.
TOURING LE
SKANDIC 500,
FORMULA SL
ENGINE TYPE 277 377 443 503
Number of Cylinders 1 2 2 2
Bore mm (in) 72.00 (2.835) 62.00 (2.441) 67.5 (2.66) 72.00 (2.835)
Stroke mm (in) 66.00 (2.598) 61.00 (2.402) 61.00 (2.402) 61.00 (2.402)
Displacement cm 3 (in 3 ) 268.70 (16.40) 368.30 (22.48) 436.6 (26.64) 496.70 (30.31)
Compression Ratio (corrected) 6.70 6.80 6.4 6.20
Maximum Power Engine Speed
➀
± 100 RPM 6900 6900 7000 7000
Piston Ring Type 1 st /2 nd ST/R ST/R ST/R ST/R
Ring End Gap (new)
(wear limit) mm (in)
mm (in) 0.2 (.008)
1.0 (.039) 0.2 (.008)
1.0 (.039) 0.2 (.008)
1.0 (.039) 0.2 (.008)
1.0 (.039)
Ring/Piston Groove Clearance (new)
(wear limit) mm (in)
mm (in) 0.04 (.0016)
0.2 (.008)
0.04 (.0016)
0.2 (.008)
0.04 (.0016)
0.2 (.008)
0.04 (.0016)
0.2 (.008)
Piston/Cylinder Wall Clearance (new)
(wear limit) mm (in)
mm (in) 0.090 (.0031)
0.2 (.008)
0.060 (.0024)
0.2 (.008)
0.080 (.0031)
0.2 (.008)
0.090 (.0035)
0.2 (.008)
Connecting Rod Big End Axial Play (new)
(wear limit) mm (in)
mm (in) 0.20 (.0079)
1.0 (.0394)
0.20 (.0079)
1.0 (.0394)
0.20 (.0079)
1.0 (.0394)
0.2 (.0079)
1.0 (.0394)
Maximum Crankshaft End-play
➁
mm (in) 0.3 (.0118) 0.3 (.0118) 0.3 (.0118) 0.3 (.0118)
Maximum Crankshaft Deflection
Measured at Center
mm (in) 0.08 (.0031) 0.08 (.0031) 0.08 (.0031) 0.08 (.0031)
Rotary Valve Timing
➂
Opening
Closing
N.A. N.A. N.A. N.A.
Magneto Generator Output W 160 240 240 240
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) 2.52 (.099) 1.68 (.066) 1.38 (.054) 1.66 (.065)
Trigger Coil
➄
N.A. 140 – 180 140 – 180 140 – 180
Generating Coil
➄
Low Speed
Ω
40 – 76 N.A. N.A. N.A.
High Speed
Ω
N.A. 230 – 330 230 – 330 230 – 330
Lighting Coil
➄
Ω
0.05 – 0.6 0.23 – 0.28 0.23 – 0.28 0.23 – 0.28
High Tension Coil
➄
Primary
Ω
0.11 – 0.21 N.A. N.A. N.A.
Secondary k
Ω
4.9 – 7.5 5.1 – 6.3 5.1 – 6.3 5.1 – 6.3
Carburetor Type PTO/MAG VM 34-508 2 x VM 30-193 VM 34-511/512 VM 34-513/514
Main Jet PTO/MAG 190 140/140 200/190 180/170
Needle Jet 159 O-8 159 P-0 159 P-0 159 P-0
Pilot Jet 40 40 35 40
Needle Identification
– Clip Position
6DH4-2 6DP9-3 6DH2-3 6DH2-3
Slide Cut-away 2.5 2.5 2.5 2.5
Float Adjustment ± 1 mm
(± .040in)
23.9 (.94) 23.9 (.94) 23.9 (.94) 23.9 (.94)
Air Screw Adjustment ± 1/16 turn 1 1-1/4 1-1/2 1-7/8
Idle Speed RPM ± 200 RPM 1200 1650 1650 1650
Gas Type/Pump Octane Number Unleaded/87 Unleaded/87 Unleaded/87 Unleaded/87
Gas/Oil Ratio Injection Injection Injection Injection
Type Radial Fan Axial Fan Axial Fan Axial Fan
Axial Fan Belt Adjustment Deflection mm (in) N.A. 8 – 9 (.31 – .35) 8 – 9 (.31 – .35) 9 – 10 (.35 – .39)
Force
➅
kg (lbf) N.A. 5 (11) 5 (11) 5 (11)
Thermostat Opening Temperature °C (°F) N.A. N.A. N.A. N.A.
Radiator Cap Opening Pressure kPa (PSI) N.A. N.A. N.A. N.A.
EN
G
INE C
O
LD
N•m (l
b•f
t)
Drive Pulley Retaining Screw
➆
95 (70) 95 (70) 95 (70) 95 (70)
Exhaust Manifold Nuts or Bolts 25 (18) 22 (16) 22 (16) 22 (16)
Magneto Ring Nut 90 (66) 105 (77) 105 (77) 105 (77)
Crankcase Nuts or Screws M6
M8 —
22 (16)
10 (7)
22 (16)
10 (7)
22 (16)
—
22 (16)
Crankcase/Engine Support Nuts or Screws 21 (15) 38 (28) 38 (28) 38 (28)
Cylinder Head Nuts 26 (19) 22 (16) 22 (16) 22 (16)
Crankcase/Cylinder Nuts or Screws N.A. N.A. N.A. N.A.
Axial Fan Shaft Nut N.A. 50 (37) 50 (37) 50 (37)