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10-2
JW7
ENGINE
Items
YTF2
Description:
Engine type
4-stroke, Gasoline, 60
˚
incline OHV
Number of cylinders
Single
Displacement
357 cm
3
Bore x stroke
85 x 63 mm (3.30 x 2.48 in.)
Compression ratio
8:1
Rated output
8.5 kw/3500 rpm/11.4 hp
Cooling system
Forced air-cooled
Starting system
Electric-Starter/Generator
Ignition system
Transistor controlled ignition (TCI)
Spark plug type
BPR2ES/BPR4ES
Spark plug gap
0.7-0.8 mm (0.028-0.031 in.)
Lubrication system
Splash-style positive oil lubrication
Engine oil type
YAMALUBE 4 cycle oil or SAE 10W30
Engine oil capacity
1.0 L, 1000 cc (1.0 US qt)
Oil change quantity
1.0 L, 1000 cc (1.0 US qt)
TRANSMISSION
Items
YTF2
Transmission:
Type
V-belt automatic centrifugal engagement
V-belt width and outer line length
31 x 1010 mm (1.22 x 39.76 in.)
V-belt wear limit
29.2 mm (1.15 in.)
Governor:
Type
Oil bath flyweight
Factory speed setting
25.7 km/h (16 mph)
Differential/reduction gear:
Differential type
Bevel gear
Lubricant/capacity
SAE 90 gear oil/800 mL
800 cc (0.9 US qt)
SPECIFICATIONS
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