Ski-Doo REV Series Shop Manual

Section 11 TECHNICAL DATA
Subsection 02 (ENGINES)
Summit 800 HO
Summit 800 HO Highmark, Summit 800 HO Highmark
X and Summit 800 HO Highmark Xtrem
Highmark Highmark X Highmark Xtreme
Country CAN/U.S. CAN/U.S. CAN/U.S.
Engine Type 793 HO
ENGINE
Number of cylinder 2
Bore Standard mm (in) 82 (3.228)
Stroke mm (in) 75.70 (2.980)
Displacement cm
3
(in
3
) 799.20 (48.770)
Compression ratio 13.25 ± 0.25
Maximum power engine speed
(1)
7850 ± 100 RPM
1
st
Semi-trapezoidal
Piston ring type
2
nd
—
New mm (in) 0.40 to 0.55 (.016 to .022)
Ring end gap
Wear limit mm (in) 1.0 (.039)
New mm (in) 0.05 to 0.10 (.0020 to .0039)
Ring/piston groove clearance
Wear limit mm (in) 0.20 (.0079)
New mm (in) 0.125 ± 0.013 (.0049 ± .0005)
Piston/cylinder wall clearance
Wear limit mm (in) 0.20 (.0079)
Maximum crankshaft end play
(2)
New mm (in) 0.3 (.012)
Maximum crankshaft deflection at PTO Wear limit mm (in) 0.06 (.0024)
New mm (in) 0.310 to 0.677 (.0122 to .0267)
Connecting rod big end axial play
Wear limit mm (in) 1.2 (.0472)
ELECTRICAL
Magneto generator output W 360
Ignition type CDI
Make and type NGK BR9ECS
(8)
Spark plug
Gap mm (in) 0.40 to 0.50 (.016 to .020)
Ignition timing BTDC
(3)
mm (in) 2.37 (.0933)
Trigger coil
(4)
190 to 300
Low speed —
Generating coil
(4)
High speed —
Lighting coil
(4)
0.1 to 1.0
Primary —
High tension coil
(4)
Secondary —
mmr2004-Rev 377

Ski-Doo REV Series Specifications

General

Chassis	REV
Track Width	15 in
Fuel Capacity	10.6 gal
Seating Capacity	1
Reverse	Available on most models
Electric Start	Available on most models