This article introduces Yanmar engine starting motor (4TNV94L 98 and 4TNV106 (T)) disassembly introduce

For Yanmar Diesel Engine Agriculture Excavator Tractor Marine Generator Diagnostic tool



(1) Disassembling order
1) Nut M8 (Disconnect the connecting wire.) See the disassembly drawing.
2) Screw M4 (2)
3) Through bolt M5 (2)
4) Rear cover
5) Brush holder
6) Yoke assy.
7) Armature
8) Bolt M6 (2)
9) Magnetic switch
10) Dust cover
11) Shift lever
12) Screw M4 (3)
13) Bearing retainer
14) Gear case
15) Pinion stopper clip
16) Pinion stopper
17) Return spring
18) Pinion shaft
19) Clutch assy


(2) Disassembly procedure
1) Nut M8
Remove the magnetic switch nut M8 (12 mm),
and disconnect the connecting wire.



2) Screw M4 (2)


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3) Through bolt M5 (2)



4) Rear cover
Remove the M4 screw fastening the brush holder
and remove through bolt M5 for rear cover
removal.


5) Brush holder Pull the brush spring up with the brush spring puller. On the negative (-) side, bring the brush spring into contact with the side of the brush for
lifting from the commutator surface. On the positive (+) side, extract the brush from the brush holder.



6) Yoke Assy.



7) Armature Remove the brush holder. The armature and yoke assy can now be removed.




8) Bolt M6 (2)



9) Magnetic switch Remove bolt M6 (10 mm), and the magnetic switch can be removed.


10) Dust cover



11) Shift lever Take the dust cover out from the gear case. The shift lever can be removed

12) Screw M4 (3)

13) Bearing retainer


14) Gear case Remove screw M4, and the bearing retainer and clutch assy can be removed.


15) Pinion stopper clip Remove the bearing retainer at the edge and the bearing, and shift the pinion stopper toward the inion. use a plain screwdriver and pry to
remove the pinion stopper clip


16) Pinion stopper


17) Return spring


18) Pinion shaft

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19) Clutch Assy Remove the pinion stopper clip. The pinion stopper, return spring, pinion shaft and bearing retainer can be removed. Disassembly is completed now