Miller Electric Trailblazer Pro 350 Owner's Manual page 41

Trouble
Engine does not go to low (idle) speed
with Engine Speed switch in Run/Idle
position.
Engine does not go to high (run) speed
when generator power or large weld
load is applied with Engine Speed
switch in Run/Idle position.
Engine uses oil during run-in period;
wetstacking occurs.
Coolant recovery tank continuously
overflows.
Notes
Be sure Engine Speed switch is in Run/Idle position.
Remove all weld and generator power loads.
Turn off remote device connected to Remote 14 receptacle RC1 (see Section 4-8).
Check for obstructed movement of throttle solenoid linkage.
Have Factory Authorized Service Agent check timer module and current transformer CT1.
Reset circuit breaker CB9 (see Section 7-9).
Place Engine Speed switch in the Run position. Have Factory Authorized Service Agent check unit.
Dry engine (see Section 9 and engine manual).
Bleed air from radiator, and replace lost coolant (see Section 4-3).
Remedy
OM-4401 Page 37