Kubota — Magnet Switch Test (Pull-in, Holding Coils)
Testing & diagnosis · Starter Magnet Switch
From a Kubota service manual covering: Hurth HBW 100, Hurth HBW 125, Hurth HBW 150, Hurth HBW 250, Hurth HBW 35, Hurth HBW 50, M-25XPB, M-35B, M-40B. Check it applies to your exact model before use.
Browse Kubota generators & specs →
Procedure
- Remove motor from starter housing.
- Prepare a 6 volt battery for test.
- Connect jumper leads from battery negative terminal to housing and starter terminal C.
- Connect jumper lead from battery positive terminal to S terminal; plunger should attract and pinion gear pop out.
- Disconnect jumper lead to starter terminal C; pinion gear should remain popped out.
Tools required
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Specs & values
- Testing time must be 3 to 5 seconds.
Source: Kubota service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.