BOMBARDIER ski-doo Tundra Scandic 2004 Series, Shop Manual, Page: 408 / 427

Section 10 TECHNICAL DATA
Subsection 02 (ENGINES)
MMR2004_144_10_02A.FM
10-02-1
VEHICLE MODEL TUNDRA SKANDIC LT/LT E
ENGINE TYPE 277 443
Number of Cylinders 1 2
Bore mm (in) 72.00 (2.835) 67.5 (2.6575)
Stroke mm (in) 66.00 (2.598) 61.0 (2.402)
Displacement
cm
3
(in
3
)
268.7 (16.40) 436.6 (26.64)
Maximum Power Engine Speed
➀
± 100 RPM 6900
Piston Ring Type 1 st /2 nd ST/R
Ring End Gap
(new)
(wear limit) mm (in)
mm (in)
ST ring 0.25 (.010)
R ring 0.20 (.008)
1.0 (.039)
0.2 (.008)
1.0 (.039)
Ring/Piston Groove Clearance
(new)
(wear limit) mm (in)
mm (in) 0.025 (.001)
0.2 (.008)
0.04 (.0016)
0.2 (.0079)
Piston/Cylinder Wall Clearance
(new)
(wear limit) ± 0.016 mm (± .0006 in)
mm (in)
0.080 (.0031)
0.2 (.008)
0.080 (.0031)
0.2 (.008)
Connecting Rod Big End Axial
Play (new)
(wear limit) mm (in)
mm (in) 0.20 (.0079)
1.0 (.0394)
Max. Crankshaft End-Play
➁
mm (in) 0.3 (.012)
Max. Crankshaft Deflection Measured at PTO mm (in) 0.08 (.0031)
Magneto Generator Output W 240
Ignition Type CDI
Spark Plug Make and Type NGK BR9ES
Spark Plug Gap ± 0.05 mm (± .002 in) 0.45 (.018)
Ignition Timing BTDC
➂ ➆
mm (in) 3.61 (.142) 2.79 (.110)
Trigger Coil Air Gap mm (in) 0.50 – 0.70 (.020 – .028) 0.45 – 0.55 (.018 – .022)
Trigger Coil
➃
Ω
160 – 180
Generating Coil
➃
Low Speed
N.A. N.A.
High Speed
Ω
5.1 – 6.2 6.3 - 7.7
Lighting Coil
➃
Ω
0.17 – 0.21
0.145 - .175
High Tension Coil
➃
Primary
Ω
N.A.
Secondary k
Ω
0.9 – 1.1
Carburetor Type PTO/MAG 1 x VM 34-585 1 x VM 32-19121
Main Jet PTO/MAG 200 180
Needle Jet 159 O-8 159 O-0
Pilot Jet 40 50
Needle Identification — Clip Position 6DH4-3 6DGY12-3
Slide Cut-Away 2.5 3
Float Adjustment ± 1 mm (± .040 in) 23.9 (.94) 35.5 (1.392)
Air Screw Adjustment ± 1/16 Turn 1 1-1/2
Idle Speed RPM ± 200 RPM 1650
Gas Type/Pump Octane Number Unleaded/87
Gas/Oil Ratio Injection
Type Radial Fan Axial Fan
Axial Fan Belt Adjustment
Deflection mm (in) N.A. 9 – 10 (.35 – .39)
Force
➄
kg (lbf) N.A. 5 (11)
Thermostat Opening Temperature °C (°F) N.A.
Radiator Cap Opening Pressure kPa (PSI) N.A.
ENG
INE CO
LD
N•m
(l
bf
•ft
)
Drive Pulley Retaining Screw
➅ ➇
Exhaust Manifold Nuts or Bolts 25 (18) 22 (16)
Magneto Ring Nut 100 (73.34) 105 (77)
Crankcase Nuts or Screws
M6
M8 —
22 (16)
9 (6.5)
22 (16)
Crankcase/Engine Support Nuts or Screws 21 (15) 39 (29)
Cylinder Head Nuts 27 (20) 22 (16)
Crankcase/Cylinder Nuts or Screws N.A.
Axial Fan Shaft Nut
N.A. 50 (37)