. A complete Parts List is available at www.MillerWelds.com

 

 

Trouble

Remedy

 

 

Low power output at ac receptacles.

Check fuse F2, and replace if open (see Section 8-4or 9-6).

 

 

 

Increase Fine control R1 setting to max.

 

 

High power output at ac receptacles.

Check engine speed, and adjust if necessary (see Section 8-6or 9-5).

 

 

Erratic power output at ac receptacles.

Check fuel level.

 

 

 

Check engine speed, and adjust if necessary (see Section 8-6or 9-5).

 

 

 

Check receptacle wiring and connections.

 

 

 

Have Factory Authorized Service Agent check brushes and slip rings.

 

 

10-3. Engine Troubleshooting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Trouble

 

 

 

Remedy

 

 

 

Engine will not crank.

 

Check fuse F6, and replace if open (see Section 8-4or 9-6).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check battery voltage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check battery connections and tighten if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check plug PLG4 and plug PLG8 connections.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Have Factory Authorized Service Agent check Engine Control switch S2.

 

 

 

Engine will not start.

 

Check fuel level.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check battery voltage.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check battery connections and tighten if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check oil level (see Section 5-2or 5-3).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check low oil pressure shutdown switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Have Factory Authorized Service Agent check fuel shutoff solenoid FS1 (FS1 optional on Robin-powered

 

 

 

 

 

 

 

 

 

units).

 

 

 

Engine starts but stops when Engine

 

Check oil level.

Control switch returns to Run position.

 

 

 

 

 

Check and refill crankcase with proper viscosity oil for operating temperature, if necessary.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check low oil pressure shutdown switch.

 

 

 

Engine stopped during normal

 

Check fuel level.

operation.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check oil level (see Section 5-2or 5-3).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check low oil pressure shutdown switch.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Periodically recharge battery (approximately every 3 months).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace battery.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check voltage regulator and connections according to engine manual.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Have Factory Authorized Service Agent check fuel shutoff solenoid FS1 (FS1 optional on Robin-powered

 

 

 

 

 

 

 

 

 

units).

 

 

 

Battery Discharges between uses.

 

Clean battery, terminals, and posts with baking soda and water solution; rinse with clear water.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Periodically recharge battery (approximately every 3 months).

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace battery.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Check voltage regulator and connections according to engine manual.

 

 

 

Engine idles but does not come up to

 

Have Factory Authorized Service Agent check fuel gauge/hourmeter/idle control, and current trans-

weld speed.

 

former CT1.

 

 

 

 

 

 

 

 

 

 

 

 

OM-4419 Page 44

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Miller Electric Bobcat 250 manual Engine Troubleshooting, Check fuel level, Check receptacle wiring and connections