Yamaha SR400 2014 User Manual

CYLINDER HEAD
5-7
EAS24130
REMOVING THE CYLINDER HEAD
1. Remove:
• Crankcase cover (left)
Refer to “GENERATOR” on page 5-46.
2. Align:
• “T” mark “a” on the AC magneto
(with the match mark “b” on the crankcase)
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
a. Turn the AC magneto counterclockwise.
b. When the piston is on the compression
stroke, align the AC magneto “T” mark “a”
with the mark “b” on the crankcase. (TDC)
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
3. Remove:
• Oil delivery pipe “1”
4. Remove:
• Cylinder head cover assembly “1”
TIP
• Loosen bolts and nuts in a crisscross pattern.
• Loosen each bolt and nut 1/2 of a turn at a
time. After all of the bolts and nuts are fully
loosened, remove them.
5. Loosen:
• Camshaft sprocket bolt
TIP
While holding the AC magneto “1” with the rotor
holding tool “2”, loosen the camshaft sprocket
bolt.
6. Remove:
• Timing chain tensioner cap
• Timing chain tensioner assembly
• Camshaft sprocket bolt “1”
• Timing chain “2”
• Camshaft sprocket “3”
• Camshaft “4”
TIP
To prevent the timing chain from falling into the
crankcase, fasten it with a wire.
a
b
1
Rotor holding tool
90890-01235
Universal magneto and rotor
holder
YU-01235
1
1
2

Yamaha SR400 2014 Specifications

General

Engine Type	Air-cooled, 4-stroke, SOHC, 2-valve
Displacement	399cc
Bore x Stroke	87.0 x 62.7 mm
Compression Ratio	8.5:1
Fuel System	Fuel Injection
Transmission	5-speed
Final Drive	Chain
Front Suspension	Telescopic fork
Rear Suspension	Swingarm
Front Brake	Single disc
Rear Brake	Drum
Front Tire	90/100-18M/C 54S
Rear Tire	110/90-18M/C 61S
Ignition System	TCI
Fuel Tank Capacity	12 liters
Curb Weight	174 kg
Wheelbase	1, 410 mm
Length	2, 085 mm
Width	750 mm