Yamaha YDRA Owner's/Operator's Manual page 46

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
JW1
SPECIFICATIONS
YDRA
4-stroke, Gasoline, 60
Single
357 cm
85 x 63 mm (3.30 x 2.48 in.)
8.1:1
8.5 kw (11.4 hp)/3500 rpm
Forced air-cooled
Starter
TCI Magneto
BPR2ES
0.7-0.8 mm (0.028-0.031 in.)
Splash-style positive oil lubrication
YAMALUBE 10W40 4-cycle oil
1.0 L, 1000 cc (1.0 US qt)
1.0 L, 1000 cc (1.0 US qt)
YDRA
V-belt automatic centrifugal engagement
29.5 x 1010 mm (1.16 x 39.76 in.)
27.7 mm (1.09 in.)
Oil bath flyweight
19 km/h (12 mph)
Bevel gear
Yamalube Shaft Drive Gear Oil/
1750 mL, 1750 cc (1.85 US quarts)
˚
incline OHV
3
10-2
1
2
3
4
5
6
7
8
9
10
11