Operating instructions

E2
Mr. Heater MH4B | Base Camp MH4BC Operating Instructions and Owner’s Manual
SpECIFICATIONS
MODEL NO. .........................................MH4B/MH4BC
GAS TYPE ......................................................PROPANE
INPUT BTU/HR. ...................................................3,800
CLEARANCE TO COMBUSTIBLES
TOP ....................................................................... 
FRONT ....................................................................
SIDES ...................................................................... 
REAR ....................................................................... 
CONTENTS
General Safety Instructions ............................................... 3
General Information .......................................................... 3
Operating with Disposable Propane Cylinders ...................4
Maintenance..................................................................... 4
Troubleshooting ................................................................ 5
Parts List ........................................................................... 6
Parts Ordering Information ............................................... 8
Service Information ........................................................... 8
WARNING:
Every time hose or tank is connected to unit, connection
must be checked for leaks in one or more ways: Apply
soapy water to connection, look for bubbles, listen for
hiss of escaping gas, feel for extreme cold, smell for rot
ten egg odor. Do not use if leaking!
WARNING:
Any changes to this heater or its controls can be
dangerous.
WARNING:
Early signs of carbon monoxide poisoning resemble the
flu, with headache, dizziness and/or nausea. If you have
these signs, heater may not be working properly. Get
fresh air at once! Have heater serviced.
THE STATE OF CALIFORNIA REQUIRES THE FOLLOWING WARNINGS:
WARNING: 
known to the State of California to cause cancer and birth defects (or other reproductive harm).
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or
other reproductive harm.
Actual BTU/HR Input Rate and Fuel Consumption times
for this appliance may vary.