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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28115
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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I, have a ransomes 951D wing mower that blows the 20 amp

Customer Question

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JA: I'll do all I can to help. How long have you been dealing with this?
Customer: have a ransomes 951D wing mower that blows the 20 amp main fuse after being run for several minutes
JA: What's the make and model of the mower? And can you guesstimate how old it is?
Customer: ransomes 951D, late1990"s
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: mower was working fine,until last week
JA: OK. Got it. I'm sending you to a secure page on JustAnswer so you can place the $5 fully-refundable deposit now. While you're filling out that form, I'll tell the Small Engine Technician about your situation and then connect you two.
Submitted: 1 year ago.
Category: Small Engine
Expert:  Curtis B. replied 1 year ago.

What is the fuse killing? Mower stopping or is the engine stopping ? What engine is this? Gas or diesel?

Customer: replied 1 year ago.
20 amp fuse that that is involved with starter relay, fuel solenoid , the 4wheel drive relay and gauges/hour meter. Engine is stopping and is a diesel.
Expert:  Curtis B. replied 1 year ago.

Usually it is alternator/voltage regulator or the fuel solenoid. If fuel solenoid has to be energized to keep engine running, it is prime suspect. Do you notice if the solenoid is getting overly hot? Can solenoid be removed and engine ran without it for test?

Expert:  Curtis B. replied 1 year ago.

Next would be to unplug voltage regulator and run test.

Customer: replied 1 year ago.
Fuel solenoid must be energized for engine to run, it is mounted to the injector pump. Engine can not be run without it. The alternator puts out 14.5 - 14.7V at the battery, also with battery disconnected, it puts out 15.1 V.
Expert:  Curtis B. replied 1 year ago.

What engine? usually the fuel solenoid can be removed, and the hole taped up for test.

Customer: replied 1 year ago.
It is a Perkins 51HP
Expert:  Curtis B. replied 1 year ago.

oK< well you can't remove it. Check it for getting hot.

Customer: replied 1 year ago.
O.K. will do this tomorrow, Does alternator output seem to be in range?
Expert:  Curtis B. replied 1 year ago.

Yes alternator output seems fine.

Expert:  Curtis B. replied 1 year ago.

With fuse blowing, it is just a matter of removing or disconnecting things, until you can isolate the overload.

Customer: replied 1 year ago.
O.K. thanks
Expert:  Curtis B. replied 1 year ago.

Thank you.

Expert:  Curtis B. replied 1 year ago.

I see question still open, did you find the problem?