Yamaha SR400: review, history, specs

Class: classic

Production: 1978-2021

Related: Yamaha SR500

Models
Yamaha SR400 (Japan) 1978-1984	Yamaha SR400 (Japan) 1985-2000	Yamaha SR400 (Japan, Europe, North America) 2001-2020
Yamaha SR400 (1978-1984)	Yamaha SR400 (1985-2000)	Yamaha SR400 (2001-2020)

Models
Yamaha SR400 Final Edition (Japan) 2021	Yamaha SR400 Final Edition Limited (Japan) 2021
Yamaha SR400 Final Edition (2021)	Yamaha SR400 Final Edition Limited (2021)

History

History
Year	Country	Name / Frame / Engine
1978	Japan	Name: Yamaha SR400 Code: 2H60
1983	Japan	Name: Yamaha SR400 Code: 34F
1984	Japan	Name: Yamaha SR400 Code: 34F
1985	Japan	Name: Yamaha SR400 Code: 1JR0
1992	Japan	Name: Yamaha SR400S; Yamaha SR400C Code: 3HT4; 3HT3
1993	Japan	Name: Yamaha SR400 Code: 3HT5
1994	Japan	Name: Yamaha SR400 Code: 3HT6
1995	Japan	Name: Yamaha SR400S Code: 3HT7
1997	Japan	Name: Yamaha SR400 Code: 3HT8
1998	Japan	Name: Yamaha SR400 Code: 3HT9
1999	Japan	Name: Yamaha SR400 Code: 3HTA
2000	Japan	Name: Yamaha SR400 Code: 3HTB
2001	Japan	Name: Yamaha SR400 Code: 3HTC
2002	Japan	Name: Yamaha SR400 Code: 3HTE; 3HTD
2003	Japan	Name: Yamaha SR400 Code: 3HTH, 3HTG, 3HTF
2004	Japan	Name: Yamaha SR400 Code: 3HTJ
2005	Japan	Name: Yamaha SR400 Code: 3HTK, 3HTL
2006	Japan	Name: Yamaha SR400 Code: 3HTN, 3HTM
2007	Japan	Name: Yamaha SR400 Code: 3HTP
2008	Japan	Name: Yamaha SR400 Code: 3HTS
2010	Japan	Name: Yamaha SR400 Code: 3HTR
2012	Japan	Name: Yamaha SR400 Code: 3HTU
2013	Japan	Name: Yamaha SR400 Code: 3HTV
2014	Japan, Europe	Name: Yamaha SR400 Code: 3HTW, 2RD1
2015	North America	Name: Yamaha SR400 Code: 2RD2, 2RD3
2016	Japan, Europe, North America	Name: Yamaha SR400 Code: 3HTY, 3HTX, 2RDB
2017	Japan, North America	Name: Yamaha SR400 Code: B0H1, 2RDE, 2RDD
2018	Japan, North America	Name: Yamaha SR400
2019	Japan	Name: Yamaha SR400
2020	Japan	Name: Yamaha SR400
2021	Japan	Name: Yamaha SR400 Final Edition + Limited

Specifications

Yamaha SR400: specs

Specifications
DIMENSIONS	Overall length	2085 mm / 82,1 in
	Overall width	750 mm / 29,5 in
	Overall height	1095 mm / 43,1 in
	Seat height	785 mm / 30,9 in
	Wheelbase	1410 mm / 55,5 in
	Ground clearance	130 mm / 5,1 in
	Dry weight
	Curb (wet) weight	168 kg / 370 lbs – SR400 (2001-2008) 174 kg / 384 lbs – SR400 (2010+)
FRAME	Type	Semi double cradle (steel)
	Front suspension, travel	35 mm telescopic fork, 150 mm / 5,9 in
	Rear suspension, travel	Swingarm with twin-shock (adjustable spring pre-load), 105 mm / 4,1 in
	Front tire size	90/100-18M/C 54S – SR400 (1985+)
	Rear tire size	110/90-18M/C 61S – SR400 (1985+)
	Front brake	Drum – SR400 (1985-2000) Single disc, 298 mm, 2-piston caliper – SR400 (2001+)
	Rear brake	Drum
	Fuel capacity	12,0 l / 3,17 US gal (reserve – 2,2 l)
	Trail	111 mm / 4,4 in
	Fuel economy / consumption	3,37 l / 100 km (70 US mpg)
ENGINE	Type	Air-cooled 4-stroke
	Cylinder arrangement	Single cylinder
	Bore & Stroke	87,0 x 67,2 mm
	Displacement	399 cm³ (24,3 cu in)
	Compression ratio	8.5:1
	Valve train	Chain driven SOHC, 2 valves
	Max. power	27,0 hp (19,8 kW) / 7000 rpm (SR400 2001) 24,0 hp (18 kW) / 7000 rpm - SR400 (2014+)
	Max. torque	29,0 Nm (3,0 kg-m) / 6500 rpm (SR400 2001) 28,0 Nm (3,0 kg-m) / 3000 rpm - SR400 (2014+)
	Acceleration 0 to 100 km/h (0-60 mph)	11,16 sec.
	Top speed	130 kmh / 81 mph
CARBURETION SYSTEM	Type	Carburetor, 1x – SR400 (1978-2008) Fuel Injection, 1x – SR400 (2010+)
	ID
DRIVE TRAIN	Clutch	Wet, multi-plate, cable operated
	Transmission	5-speed
	Final drive	Chain
	Primary reduction	2.567
	Final reduction
	Gear ratio I II III IV V	2.357 1.556 1.190 0.917 0.778
ELECTRICAL	Ignition	CDI – SR400 (1978-2008) TCI – SR400 (2010+)
	Alternator	A.C. magneto 14V 22.3A at 5000 rpm
	Battery capacity	12V-2.5Ah

Images

Yamaha SR400: images, gallery.

Yamaha SR400	Yamaha SR400	Yamaha SR400
Yamaha SR400 Final Edition	Yamaha SR400 Final Edition Limited	Yamaha SR400 Final Edition

Videos

Yamaha SR400: video.

YAMAHA SR400

Manuals

Yamaha SR400: manuals, parts, microfiches.

• Yamaha SR400: Service Manual