Kubota BX1870 Workshop Manual

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ELECTRICAL SYSTEM

BX1870,BX2370,BX2670,LA203A,LA243A,RCK48(P),RCK54(P),RCK60B,RCK60D,RCK54D, WSM

6-S28

[2] DISASSEMBLING AND ASSEMBLING

(1) Starter

Motor

1. Disconnect the connecting lead (9) from the magnet switch (8).

2. Remove the screws (6), and then separate the end frame (4),

yoke (2) and armature (1).

3. Remove the two screws (5), and then remove the brush holder

(3) from the end frame (4).

(When reassembling)

• Apply grease to the spline teeth "A" of the armature (1).

9Y1210855ELS0052US0

Magnet Switch

1. Remove the drive end frame (1) mounting screws.

2. Remove the overrunning clutch (2), ball (3), spring (4), gears

(5), rollers (6) and retainer (7).

(When reassembling)

• Apply grease to the gear teeth of the gears (5) and overrunning

clutch (2), and ball (3).

9Y1210855ELS0053US0

Plunger

1. Remove the end cover (1).

2. Remove the plunger (2).

9Y1210855ELS0054US0

Tightening torque Nut (7)

5.9 to 11.8 N·m

0.6 to 1.2 kgf·m

4.3 to 8.7 lbf·ft

(1) Armature

(2) Yoke

(3) Brush Holder

(4) End Frame

(5) Screw

(6) Screw

(7) Nut

(8) Magnet Switch

(9) Connecting Lead

A: Spline Teeth

(1) Drive End Frame

(2) Overrunning Clutch

(3) Ball

(4) Spring

(5) Gear

(6) Roller

(7) Retainer

(1) End Cover (2) Plunger

KiSC issued 02, 2017 A

Other manuals for Kubota BX1870

Operator's Manual93 pages

Questions and Answers:

C
chelsea66Aug 22, 2025
What to do if my Kubota BX1870 engine overheats?
- D
  deanjaclynAug 22, 2025
  If your Kubota Tractor engine overheats, it could be due to several reasons. First, the engine might be overloaded, so shift to a lower gear or reduce the load. Second, the coolant level might be low, so fill the cooling system to the correct level and check the radiator and hoses for leaks. Third, the fan belt might be loose or defective, requiring adjustment or replacement. Fourth, the radiator core or grille screens could be dirty, so remove any trash. Finally, the coolant flow route might be corroded, so flush the cooling system.

Kubota BX1870 Specifications

General

Engine Type	Diesel
Engine Power	18 hp
Transmission	Hydrostatic
Fuel Capacity	6.6 gallons
Wheelbase	55.1 inches
Type	Sub-Compact Utility Tractor
Engine	Kubota D722
PTO Power	13.5 hp
Number of Cylinders	3
Cooling	Liquid
Drive	4WD
Drive Type	4WD
Width	44.5 inches
Hydraulic System Type	Open center
PTO Speed	540 RPM
Displacement	0.719 L
Fuel Tank Capacity	6.6 gallons
Gears	Infinite (2-range) forward and reverse
Front Tire Size	18x8.5-10
Rear Tire Size	26x12-12