Black Max BM903511 - User Manual

15-30 S
991000040
5-20-14 (REV:01)
Install the feet (see page 11).
WARNING:
This Quick Reference Guide is not a substitute for reading the operator’s manual. To reduce the risk of injury or death, user must read and understand operator’s manual before using this product. All page references refer to
the operator’s manual.
FIRST TIME ASSEMBLY
1
BM903511 QUICK REFERENCE GUIDE
STARTING THE UNIT
USING THE GENERATOR
5
Add entire bottle of lubricant provided to the gen-
erator (see page 13).
Add fuel (see page 14).
1
2
Turn the fuel valve to ON (see page 14).
Turn the fuel valve to OFF before adding lubri-
cant.
Set unit on flat surface so engine is level.
Remove dipstick, wipe clean, put back in hole
(but don’t screw in) and check lubricant level.
This is a 4-cycle engine. Do not mix fuel and
lubricant together.
Mix fuel stabilizer with gasoline according to
manufacturer’s directions prior to filling the
tank.
STOPPING THE UNIT
Press and hold the STOP switch (see page 14.)
1
Connect devices to be powered by generator by following the steps below (see pages 8-9).
•
Make sure the generator can supply enough continuous (running) and surge (starting) watts for the items you
will power at the same time. See page 9 for how to calculate total amount of power needed.
• Start the generator with nothing connected.
• Plug in and turn on the first load, preferably the largest load you have.
• Permit the generator output to stabilize (engine runs smoothly and attached device operates properly).
• Plug in and turn on the next load.
• Again, permit the generator to stabilize.
• Repeat previous two steps for each additional load.
IMPORTANT: Never add more loads than the generator capacity. Take special care to consider surge loads in
generator capacity. (See pages 8-9.)
1
TROUBLESHOOTING
STORING THE UNIT
When preparing to store the generator, allow the unit to cool completely, then follow the guidelines listed on
page 18.
1
WARNING:
Do not connect to a building’s electrical
system unless the generator and transfer
switch have been properly installed and
the electrical output has been verified by
a qualified electrician. The connection
must isolate the generator power from
utility power and must comply with all
applicable laws and electrical codes.
IMPORTANT!
Only use OUTSIDE and
far away from windows,
doors, and vents.
NEVER use inside a home
or garage, EVEN IF doors
and windows are open.
Using a generator indoors CAN KILL YOU IN MINUTES.
Generator exhaust contains carbon monoxide. This is a
poison you cannot see or smell.
PROBLEM POSSIBLE CAUSE SOLUTION
Engine will not start. No fuel.
Stale gasoline or water in gasoline.
Lubricant level is low.
Fuel valve is OFF.
Spark plug faulty, fouled, or improperly gapped.
Choke is in RUN position.
Engine stored without treating or draining gaso-
line, or refueled with bad gasoline.
Dirty fuel filter.
Fill fuel tank.
Drain entire system and refill with fresh fuel.
Engine is quipped with Low Oil Shutoff. if engine
lubricant level is low, it must be filled before unit
will start.Check engine lubrincant level and fill,
if necessary.
Turn fuel valve ON.
Replace spark plug.
Move choke to START position.
Drain fuel and carburetor. Refuel with fresh
gasoline.
Replace fuel filter or contact authorized service
center
Engine hard to start. Water in gasoline.
Weak spark at spark plug.
Drain entire system and refill with fresh fuel.
Replace spark plug or contact authorized ser-
vicee center.
Engine lacks power. Air filter element clogged.
Engine stored without treating or draining
gasoline, or refueled with bad gasoline.
Check air filter element. Clean or replace as
needed.
Drain fuel and carburetor. Refuel with fresh
gasoline. If problem continues, contact your
nearest authorized service center.
AC receptacle does not work. Circuit breaker is OFF.
Item plugged in is defective.
Turn ON the AC circuit breaker.
Try a different item.
Generator makes a “spark
knock” or “pinging” noise.
An occasional light “knocking” or “pinging” under
heavy load is not a cause for concern. However,
if the knocking or pinging occurs under normal
load at a steady engine speed, the problem may
be with the brand of gasoline being used.
Switch to a different brand of gasoline, making
sure that the octane rating is 86 or higher. If
problem continues, contact your nearest autho-
rized service center.
If problem persists after trying the above solutions, contact your nearest authorized service center for assistance.
The following symptoms may indicate problems that will affect the emissions level of the unit:
 Hard starting or stalling after starting
 Rough idle
 Misfiring or backfiring under load
 Afterburning (backfiring)
 Black exhaust smoke or high fuel consumption
If you encounter any of these symptoms, have the unit inspected and repaired by the nearest authorized service center.
If you need more assistance, visit our website at
www.blackmaxtools.com or call us at 1-800-726-5760.
R
Allow engine to run for 15-30 seconds, then push
choke in to RUN position (see page 14).
5
Pull the recoil starter to start
(see page 14).
4
3
Pull choke out to START position (see page 14).
CHOKE
IN RUN
POSITION
STOP SWITCH
NOTICE:
Do not use E15 or
E85 fuel (or fuel
containing greater than 10% ethanol) in
this product. It is a violation of federal
law and will damage the unit and void
your warranty.
CHOKE IN
START POSITION
CHOKE
OFF
ON
Install the handle (see page 12).
3
Install the wheels (see page 12).
2
Securing the handle (see page 12).
4
TOOLS NEEDED
Socket Wrench
Adjustable Wrench

Summary

Important Safety Information

Electrical Connection Warning

Do not connect to a building's electrical system unless verified by a qualified electrician.

Carbon Monoxide Danger

Generator exhaust is deadly. Never use indoors, even with open doors and windows.

Tools Needed for Setup

First Time Assembly Steps

Install Generator Feet

Attach the feet to the generator unit as part of the initial setup process.

Install Generator Wheels

Mount the wheels onto the generator frame for mobility.

Install Generator Handle

Securely attach the handle to the generator for easier maneuvering.

Add Lubricant

Add the provided lubricant to the generator before initial operation.

Starting the Generator

Add Fuel and Stabilizer

Fill the fuel tank with gasoline and fuel stabilizer as directed.

Turn Fuel Valve to ON

Position the fuel valve to the 'ON' setting to allow fuel flow.

Set Choke to START

Move the choke lever to the 'START' position for cold starting.

Pull Recoil Starter

Pull the recoil starter rope to begin the engine ignition process.

Adjust Choke to RUN

After 15-30 seconds, move the choke to the 'RUN' position.

Using the Generator

Connect Devices

Connect appliances, ensuring their wattage meets generator capacity.

Storing the Generator

Cool Down and Store

Allow the unit to cool completely before following storage guidelines.

Troubleshooting Common Issues

Engine Will Not Start

Check fuel, lubricant, fuel valve, spark plug, and choke position.

Engine Hard to Start

Verify fuel quality, spark plug condition, and choke setting.

Engine Lacks Power

Inspect the air filter element and ensure proper fuel and storage.

AC Receptacle Not Working

Check the circuit breaker and the plugged-in item.

Generator Spark Knock or Pinging

Ensure correct gasoline octane rating and consult service if issue persists.

Emissions-Related Symptoms

Seek service for issues like hard starting, rough idle, or black exhaust smoke.

Stopping the Generator

Press Stop Switch

Press and hold the stop switch to turn off the generator.

Black Max BM903511 Specifications

General

Fuel Tank Capacity	4 gal
Run Time at 50% Load	11 hours
Engine Type	4-Stroke OHV
Starting System	Recoil
Weight	110 lbs
Rated Watts	3500 W
DC Output	12V
Outlet	2x 120V 20A
Noise Level	68 dBA at 23 ft