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My Miller Trailblazer 302 will not idle down.What may be causing this?

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Posted on Jan 02, 2017

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SOURCE: Miller Trailblazer 302 Gas, will

Check the circuit breakers, one may have tripped or failed, such as CB4 which would also impact generator voltage output and since it controls power to the 24 control system- the first one to check or service. If you can access the rear terminals, check the voltage in operation at both lugs- if you do not get the same voltage reading at each lug of CB4 measuring them one at a time to chassis ground, the breaker is tripped or faulty .

CB1 is inline with the 240 VAC outlet and is ahead of CB2 and CB3

CB2 and CB3 are inline with the 120VAC outlets

In each case, switch them off then back on.

If you have the GFCI option, it may have been tripped by unsafe conditions.

Posted on Jan 07, 2012

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SOURCE: trouble shooting miller trailblazer 302 engine powers out when air arcing

Blow cabinet clean of dust and check connections in cabinet and handle. first, Then check the wires to the step up solenoid and make sure they have sound connections and that solenoid is mounted securely. If you do much outside at night, have someone watch with the cabinet open and see where it sparks when the engine drops speed. Int he dark, even small sparks you would not see inthe daytime or the shop apper reasonably well.

Posted on Sep 25, 2012

dickandannet
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SOURCE: my miller trailblazer 302 stock#907216 wont stay running without drasticly pulling choke on off

Could be the main jet blocked in the carby, blocked filter on the fuel tap.

Posted on Feb 02, 2017

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2 Answers

My TB 302 cranks and runs at high idle does not idle down. I have power at all recepticals but no power at welding leads. I have checked all breakers and fuses, they are ok. what do I need to do next


there are a few things you can check on your machine,
make sure your machine is not in the remote control position, make your process switch is in the electrode hot position, the trailblazer has three slip rings, make sure the carbon brushes are not "stuck" in the holders, there are 2 circuit boards in your machine, make sure the plugs are properly inserted into the receptacles and making good contact, also make sure your ignition switch plug is clean and making good contact

Mar 17, 2016 | Miller Trailblazer 302 AC/DC Welder...

1 Answer

Miller trailblazer 302 it has 110 volts but no 220 volts


Both sets of the 120? If both of those are there (all 4 outlets), then the machine is producing 220v. So get a flashlight and look into the holes on the 220 receptacle, or check the wires on the backside of the receptacle. All that 220 is, is two 120 volts out of phase.

Feb 19, 2015 | Miller Trailblazer 302 Welder Generator...

1 Answer

Operation manual for a miller trailblazer 302 stock number 907217


www.millerwelds.com have the serial number handy. Click on service, then owners manuals and follow the directions.

Oct 07, 2014 | Miller Trailblazer 302 Welder Generator...

1 Answer

What will cause my welding generator to start up at full rpm and not idle down?


Check the governor unit. Miller is a good make, shouldn't be a problem downloading a manual.

Sep 05, 2014 | Miller Trailblazer 302 Welder Generator...

1 Answer

I have miller 302. Outlet power working but stick weld not work


Check your machines fuses. For location of fuses look into your owner's manual.

Feb 17, 2014 | Miller Trailblazer 302 Welder Generator...

1 Answer

Engin boggs down while welding


have you had the cables tested,welding weares them out.how old are they a welder is like a big old coil or armature the contact points on it gets corroded causing it to work harder causing your bog

Apr 08, 2012 | Miller Trailblazer 302 Welder Generator...

1 Answer

My 302 diesel trailblazer runs for a few minutes then shuts down and flashes HI H20 code ,the manual says its a coolant issue but even with the proper amount of coolant it still does this


You need to "burp" you're coolant system. To do this find the upper Radiator Elbow where it goes into the engine, then, use an allen head to unscrew bleeding screw (for lack of better term). place Rags under so as the spilling coolant is caught as best you can (it's basically a fill bolt style, fill radiator until coolant seeps from that hole, lock her back up, repeat testing.

- Logan P. Clayton
Miller Authorized Service Technician

Feb 08, 2012 | Diesel Miller 907218 Trailblazer 302...

1 Answer

Miller Trailblazer 302 Gas, will start but, but won't weld or generate. Does not show any readout on the digital meters, will not idle up, only idles at low RPM's. Any idea what may have...


Check the circuit breakers, one may have tripped or failed, such as CB4 which would also impact generator voltage output and since it controls power to the 24 control system- the first one to check or service. If you can access the rear terminals, check the voltage in operation at both lugs- if you do not get the same voltage reading at each lug of CB4 measuring them one at a time to chassis ground, the breaker is tripped or faulty .

CB1 is inline with the 240 VAC outlet and is ahead of CB2 and CB3

CB2 and CB3 are inline with the 120VAC outlets

In each case, switch them off then back on.

If you have the GFCI option, it may have been tripped by unsafe conditions.

Sep 20, 2011 | Miller Trailblazer 302 Welder Generator...

1 Answer

What does the code on my miller trailblazer 302,004 mean?


Hi:

That's not a code, 004 means the working hours left before the next oil change.
The display always start at 100 and count down all the way to zero.
If you don't change the oil and reset the count down you will start seeing negative numbers, meaning that oil change is due.
To reset the counter once you change the oil do the following:
Cycle engine control switch from the Run/Idle to Run position 3 times.

If this was useful to you, please vote. Thank you..

Mar 23, 2011 | Miller Trailblazer 302 Welder Generator...

1 Answer

My 2009 trailblazer 302 with kubota diesel engine keeps shutting down read out says lo oil. but engine oil dipstick shows full dobrodoc@starband.net


If you have owners manual I would locate the low oil safety switch and replace it. You can temporarily bypass the switch to verify that is the problem before buying new parts but I would not leave it that way. Use for diagnostic only. Thank you

Dec 02, 2010 | Miller 907068 MILLER TRAILBLAZER PRO 350D...

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