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SPECIFICATIONS
Dimensions - MX-27129A
H e
j g
h t
30-1/8 in. (765 mm)
W i d t h . ! ! ' .
33-13/16 in. (859 mm)
L e n g t h ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! ! !
4 8
-
5 / 8
i n
- c -
2 4
m
m
)
Number of Cylinders
2
B o r e
3-1/4 in. (82.6 mm)
Stroke
3
i n
- (
7 6
-
2
m
m
)
Displacement
49.8 cu in. (716 cu cm)
Compression Ratio
7.0 to 1
Compression (sea level)
105 to 110 psi (7.38 to 7.7.3 kg/sq cm)
Engine Power (1800 rpm)
10.2 BHP (7.61 Kilowatts)
Lubrication
Full Pressure Lubrication
Y e s
Oil Capacity
4
u
s
- q
u a r t s
(
3
-
8
'•*>
Fuel System
Carburetor (Combination Gas-Gasoline)
Downdraft
Choke
Electric
Fuel Tank Capacity (where used)
5 U.S. gallons (18.9 lit)
Governor (with vacuum booster)
Enclosed, mechanical flyball
Governor Regulation
5
percent
Ignition
12-volt, battery
Starting
Electric
Battery Recommended
SAE Group 60
1 2
V o l t
360 Cold Cranking Amps (74 A/Hr)
Generator
Basic Design
Revolving armature, 4-pole
Rating (in watts)
5 0 0 0
W a t t
s
Battery Charge Rate (Fixed Two Step)
2
Amp & 5 Amp
Frequency Regulation (no load, to full load)
5 percent
TUNE-UP SPECIFICATIONS
Breaker Point Gap (full separation)
0.020 in. (0.51 mm)
Spark Plug Gap
Gasoline
0.025 in. (0.64 mm)
Gaseous
0.018 in. (0.46 mm)
Ignition Timing
19° BTC
Carburetor Float Clearance (between float bowl gasket and float)
1/4 in. (6.35 mm)
Valve Tappet Clearance (engine cold)
|
n t a k e
0.006 to 0.008 in. (0.15 to 0.20 mm)
E x h a u s t
0.015 to 0.017 in. (0.38 to 0.43 mm)
TORQUE SPECIFICATIONS*
Cylinder Head Bolts
2
9-31 ft-lb (39.4 to 42.2 N«m)
Manifold Screws
:
""take
15-20 ft-lb (20.4 to 27.2 N»m)
Exhaust
14-17 ft-lb (19.0 to 23 N»m)
* Torque when engine is cold. Be careful not to strip threads.
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