White Oliver Starter Heat Switch 677481A
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
- Oliver 1250A, 1255, 1265, 1270, 1355, 1365, 1370, 1465 and 1470
- White 2-50 and White 2-60
- Related Fiat-built White / Oliver tractors only when the switch and wiring match
Product Overview
If the tractor will crank only intermittently, has no thermostart or heat command, or the key no longer returns cleanly, worn switch contacts may be responsible. Battery, solenoid, neutral switch, wiring, and the cold-start device should be tested first.
The switch combines starter and heat circuit control in the original dash location. Back-of-switch connectors and terminal functions must match; similar-looking Oliver switches use different circuits.
Match the original switch number, two wire connectors plus two double-spade plug connections where applicable, key positions, dash mount, tractor model, and serial number.
Key Features & Performance
- Combined start and cold-start heat switching
- Rear connection layout for compatible White and Oliver tractors
- Replacement for weak return spring or burnt contacts
- Maintains the original neutral and starter circuit when wired correctly
Replaces Part Numbers
- 677481A
- 72089444
- TX10954
Common Uses
- Restoring a missing starter command
- Repairing an unreliable thermostart position
- Replacing a mechanically worn key switch
Technical Specifications
- Product Type: Starter and heater key switch
- Tractor Brands: White and Oliver
- Primary Reference: 677481A
- Condition: New aftermarket replacement
Installation & Fitment
- Disconnect the battery
- Label each wire and plug
- Compare switch markings and key positions
- Inspect the cold-start circuit for shorts
- Test heat, start, key return, shutdown, and neutral protection
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Is this only an ignition light switch? A: No. This listing is for the starter and cold-start heat switch identified by 677481A.
Q: Can a bad neutral switch look like a bad key switch? A: Yes. Test voltage before and after each point in the starter circuit.
Q: Will it fit an Oliver 1250 without the A suffix? A: Fitment varies; confirm the original switch and rear connections.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: Oliver 677481A starter switch, White 2-50 heat switch, Oliver 1355 no crank key switch, 72089444 replacement, tractor thermostart switch
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.