|
Rotax Engine Rebuilding Videos
Rotax engine rebuilding videos, each video is approximately 2 hours in
length and takes you step by step through the tear down, clearing, and
reassembly of a Rotax engine
Click here for more information!
Rotax 377 engine specifications. |
| DESCRIPTION: |
Two-cycle, two-cylinder engine, oil in
fuel lubrication |
| BORE: |
62. mm |
| STROKE: |
61 mm (2.40 in.)
|
| DISPLACEMENT: |
368. cc |
| COMPRESSION RATIO: |
Theoretical 9.6, effective
6.3
|
| POWER OUTPUT: |
29.5 kw (35 HP) at 6000
rpm
|
| TORQUE MAX.: |
25 ft lbs. @5500 rpm |
| MAXIMUM RPM: |
7000 RPM |
| DIRECTION OF ROTATION: |
Counter-clockwise, viewed
towards PTO |
| CYLINDER: |
2 light alloy cylinders w/
cast iron sleeves |
| PISTON: |
Aluminum cast piston with
2 rings
|
| PISTON/CYLINDER CLEARANCE: |
0.08- 0.09mm
(.00315-.00354 in.)
|
| IGNITION SYSTEM: |
Bosch with points and
condensers |
| GENERATOR OUTPUT: |
AC 12V 110W + 30W
|
RECTIFIER-REGULATOR:
(optional) |
a.) #9103 requires minimum
load 12 W (1 amp.) |
| b.) #9251 requires no minimum load
|
| IGNITION TIMING: |
2.09 mm = .086" BTDC
|
| CONTACT POINT GAP: |
0.4 mm = .015"
|
| SPARK PLUG: |
12mm NGK B8ES |
| ELECTRODE GAP: |
.015" GAP |
| CARBURETOR: |
1 X BING 36mm, with hand
lever choke |
| FUEL PUMP: |
pneumatic fuel pump #6903
|
| FUEL: |
Regular gasoline, octane
not below 90 unleaded |
| LUBRICATION OF ENGINE: |
Super two stroke oil
(AV-2)
|
| MIXING RATIO: |
50 TO 1 (2%) |
| STARTER: |
Rewind starter
optional: electric mag side without recoil option |
| REDUCTION
GEARBOX "B": |
Reduction gear-box with
Torsional shock absorber |
| RATIOS: 2.00 to 1, 2.238 to 1, 2.58 to
1
|
| DIRECTION OF PROP
ROTATION: |
Clockwise, viewed toward
prop flange |
| COOLING: |
Air cooled by axial fan
|
| WEIGHTS: |
Engine without carburetor, intake
silencer, fuel pump |
| Exhaust System...................... |
| Carb With Rubber Socket......... 2.0
lbs.......( 0.9 kg.) |
| Exhaust System (approx.)......... 10.8
lbs.......( 4.9 kg.) |
| Electric Start Kit (Optional)..... 7.70
lbs.......( 3.5 kg.) |
| Reduction Box "B" - Dry.............9.9
lbs.......(4.5 kg.) |
|
Click here for
performance and measurements. |
