Yamaha YDRA Owner's/Operator's Manual page 43

ENGINE
Items
Description:
Engine type
Number of cylinders
Displacement
Bore x stroke
Compression ratio
Rated output
Cooling system
Starting system
Ignition system
Spark plug type
Spark plug gap
Lubrication system
Engine oil type
Engine oil capacity
Oil change quantity
TRANSMISSION
Items
Transmission:
Type
V-belt width and outer line length
V-belt wear limit
Governor:
Type
Factory speed setting
Differential/reduction gear:
Differential type
Lubricant/capacity
BATTERIES
Items
Battery:
JW1
SPECIFICATIONS
YDRA
4-stroke, Gasoline, OHV
Single
357 cm
3.30 x 2.48 in. (85 x 63 mm)
8.1:1
11.4 hp (8.5 kw)/3500 rpm
Forced air-cooled
Starter
TCI Magneto
BPR2ES
0.028-0.031 in. (0.7-0.8 mm)
Splash
YAMALUBE 4-cycle oil or SAE 10W30
1.16 US qt (1.1 L, 1100 cc)
1.0 US qt (1.0 L, 1000 cc)
YDRA
V-belt automatic centrifugal engagement
1.22 x 39.76 in. (31 x 1010 mm)
1.06 in. (27 mm)
Oil bath flyweight
12 mph (19 km/h)
Bevel gear
SAE80 W90 API GL-5
limited slip high performance gear oil/
1.85 US quarts (1750 mL, 1750 cc)
YDRA
BCI group 24,
RC: minimum 75 min
CCA: minimum 400A
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10-2
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