The original six-car sets were shortened to four cars as shown below from 23 April 2011. The sets were occasionally lengthened to six cars for increased capacity during busy periods by inserting a pair of MoHa E751 and MoHa E750 cars until the three pairs of MoHa E751 and MoHa E750 cars were withdrawn in 2015.
Car No.
1
2
3
4
Designation
Thsc
M1
M2
Tc
Numbering
KuRoHa E750
MoHa E751-100
MoHa E750-100
KuHa E751
Weight
30.7
34.8
33.1
29.0
Capacity
38
72
72
68
Car 2 is equipped with one PS107 single-arm pantograph.
6-car sets (March 2000–April 2011)
Sets were originally formed as six-car sets, consisting of four motored cars and two trailers, as shown below. Sets were shortened to four cars from 23 April 2011.
Car No.
1
2
3
4
5
6
Designation
Tc1
M2
M1
M2
M1
Tsc'
Numbering
KuHa E751
MoHa E750-100
MoHa E751-100
MoHa E750
MoHa E751
KuRoHa E750
Weight
29.0
33.1
34.8
33.1
34.8
30.7
Capacity
68
72
72
72
72
38
Cars 3 and 5 are each equipped with one PS107 single-arm pantograph.
Interior
Seating is configured 2+2 abreast in both standard class and Green class. Seat pitch is in standard class and in Green class.
History
The first set was delivered to Aomori Depot from Tokyu Car Corporation's Yokohama factory on 9 December 1999, followed by the remaining two sets in January 2000. The fleet entered service on Super Hatsukari services operating between and from the start of the revised timetable on 11 March 2000. From 1 December 2002, the E751 series trains were reassigned to new Tsugaru services operating between and, which replaced the former Super Hatsukari services following the opening of the Tōhoku Shinkansen extension from Morioka to Hachinohe. In late 2006, all three sets underwent modifications at JR East's Kōriyama Works to reinforce the front end snowploughs and add protection plates to underfloor equipment. From the start of 4 December 2010 timetable revision, the E751 series sets were replaced on Tsugaru services by 4-car 485-3000 series EMUs, and were temporarily removed from regular service. From 23 April 2011, the fleet of three E751 series sets were reinstated on Tsugaru services, this time formed as 4-car sets, replacing the 485-3000 series sets. The three pairs of MoHa E751 and MoHa E750 cars removed were stored at Aomori Depot, and occasionally reinserted into sets to provide increased capacity during busy seasons until the three pairs of cars were withdrawn in 2015.
Build details
The build details for the three sets are as follows.
