Harbor Freight Tools 40963 User Manual
TIMING LIGHT
40963
SET UP AND OPERATING INSTRUCTIONS
Visit our website at: http://www.harborfreight.com
Read this material before using this product.
Failure to do so can result in serious injury.
SAVE THIS MANUAL.
Copyright© 2007 by Harbor Freight Tools®. All rights reserved. No portion of this manual or any artwork
contained herein may be reproduced in any shape or form without the express written consent of
Harbor Freight Tools. Diagrams within this manual may not be drawn proportionally. Due to continuing
improvements, actual product may differ slightly from the product described herein. Tools required for
assembly and service may not be included.
For technical questions or replacement parts, please call 1-800-444-3353.
REV 07h; Manual Revised 09g
CONTENTS
IMPORTANT SAFETY INFORMATION .......................................................3
SPECIFICATIONS ........................................................................................6
UNPACKING ................................................................................................6
TIPS..............................................................................................................6
TIMING LIGHT BASICS ............................................................................................. 6
WHEN TO CHECK TIMING ........................................................................................7
OPERATING INSTRUCTIONS ....................................................................8
TIMING ADJUSTMENT .............................................................................................. 9
TESTING CENTRIFUGAL ADVANCE .......................................................................9
TESTING VACUUM ADVANCE ................................................................................10
CHECKING DISTRIBUTOR CAM WEAR ................................................................ 10
SMALL ENGINE TIMING .........................................................................................11
ROTARY ENGINE TIMING ....................................................................................... 11
MAINTENANCE AND SERVICING ............................................................12
CLEANING, MAINTENANCE, AND LUBRICATION ................................................12
TROUBLESHOOTING .............................................................................................. 13
PARTS LIST ...............................................................................................14
ASSEMBLY DIAGRAM ..............................................................................15
LIMITED 90 DAY WARRANTY ..................................................................16
Page 2For technical questions, please call 1-800-444-3353.SKU 40963
SAVE THIS MANUAL
Keep this manual for the safety
warnings and precautions, assembly,
operating, inspection, maintenance and
cleaning procedures. Write the product’s
serial number in the back of the manual
near the assembly diagram (or month
and year of purchase if product has no
number). Keep this manual and the
receipt in a safe and dry place for future
reference.
IMPORTANT SAFETY
INFORMATION
In this manual, on the labeling,
and all other information
provided with this product:
This is the safety alert
symbol. It is used to alert
you to potential personal
injury hazards. Obey all
safety messages that
follow this symbol to avoid
possible injury or death.
DANGER indicates
a hazardous
situation which, if not
avoided, will result in death or
serious injury.
WARNING
indicates a
hazardous situation which, if
not avoided, could result in
death or serious injury.
CAUTION, used
with the safety
alert symbol, indicates a
hazardous situation which, if
not avoided, could result in
minor or moderate injury.
NOTICE is used to
address practices
not related to personal injury.
CAUTION, without
the safety alert
symbol, is used to address
practices not related to
personal injury.
GENERAL SAFETY RULES
WARNING! Read all instructions
Failure to follow all instructions
listed below may result in
electric shock, re, and/or
serious injury.
The warnings, precautions,
and instructions discussed in
this instruction manual cannot
cover all possible conditions and
situations that may occur. It must
be understood by the operator that
common sense and caution are
factors which cannot be built into
this product, but must be supplied
by the operator.
SAVE THESE INSTRUCTIONS
Work area safety1.
Keep work area clean and well a.
lit. Cluttered or dark areas invite
accidents.
Keep children and bystanders b.
away while operating a diagnostic
tool. Distractions can cause you
to lose control.
Electrical safety2.
Do not expose diagnostic tools a.
to rain or wet conditions. Water
Page 3For technical questions, please call 1-800-444-3353.SKU 40963
entering a diagnostic tool will
increase the risk of electric shock.
or long hair can be caught in moving
parts.
Do not abuse the cords. Never b.
use the cords for carrying, pulling
or unplugging the diagnostic
tool. Keep cords away from heat,
oil, sharp edges or moving parts.
Damaged or entangled cords
increase the risk of electric shock.
Personal safety3.
Stay alert, watch what you are a.
doing and use common sense when
operating a diagnostic tool. Do not
use a diagnostic tool while you are
tired or under the inuence of drugs,
alcohol or medication. A moment of
inattention while operating diagnostic
tools may result in serious personal
injury.
Use safety equipment. Always b.
wear eye protection. Safety
equipment such as dust mask,
non-skid safety shoes, hard hat,
or hearing protection used for
appropriate conditions will reduce
personal injuries.
Avoid accidental starting. Ensure c.
the switch is in the off-position
before plugging in. Carrying
diagnostic tools with the nger on
the switch or plugging in diagnostic
tools that have the switch on invites
accidents.
Do not overreach. Keep proper d.
footing and balance at all times.
This enables better control of the
diagnostic tool in unexpected
situations.
Dress properly. Do not wear loose e.
clothing or jewelry. Keep the hair,
clothing and gloves away from
moving parts. Loose clothes, jewelry
Diagnostic tool use and care4.
Do not force the diagnostic tool. Use a.
the correct diagnostic tool for the
application. The correct diagnostic
tool will do the job better and safer at
the rate for which it was designed.
Do not use the diagnostic tool if b.
the trigger does not turn it on and
off. Any diagnostic tool that cannot
be controlled with the trigger is
dangerous and must be repaired.
Store idle diagnostic tools out c.
of the reach of children and do
not allow persons unfamiliar
with the diagnostic tool or these
instructions to operate the
diagnostic tool. Diagnostic tools
are dangerous in the hands of
untrained users.
Maintain diagnostic tools. Check d.
for misalignment or binding of
moving parts, breakage of parts
and any other condition that may
affect the diagnostic tools operation.
If damaged, have the diagnostic
tool repaired before use. Many
accidents are caused by poorly
maintained diagnostic tools.
Use the diagnostic tool and e.
accessories, in accordance with
these instructions and in the
manner intended for the particular
type of diagnostic tool, taking into
account the working conditions and
the work to be performed. Use of
the diagnostic tool for operations
different from those intended could
result in a hazardous situation.
Page 4For technical questions, please call 1-800-444-3353.SKU 40963
Service5.
Have the diagnostic tool serviced by a.
a qualied repair person using only
identical replacement parts. This
will ensure that the safety of the
diagnostic tool is maintained.
SPECIFIC SAFETY RULES
Maintain labels and nameplates on 1.
the tool. These carry important safety
information. If unreadable or missing,
contact Harbor Freight Tools for a
replacement.
Avoid unintentional starting. Prepare 2.
to begin work before connecting the
tool.
This product is not a toy. Keep it out 3.
of reach of children.
People with pacemakers should 4.
consult their physician(s) before
use. Electromagnetic elds in close
proximity to heart pacemaker could
cause pacemaker interference or
pacemaker failure.
Caution is necessary when near coil,
spark plug cables, or distributor of
running engine. Engine should be off
during distributor adjustment.
WARNING: Handling the cord on 5.
this product will expose you to lead,
a chemical known to the State of
California to cause cancer, and
birth defects or other reproductive
harm. Wash hands after handling.
(California Health & Safety Code §
25249.5, et seq.)
SAVE THESE
INSTRUCTIONS.
Page 5For technical questions, please call 1-800-444-3353.SKU 40963
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