NorthStar 45933 User manual

Owner’s Manual
Instructions for Proper Use of
Air Compressor Startup Kits
KIT PART#
USE ON NorthStar ITEMS:
45933
459212, 459222, 459392, 459232,
25653, 25654
Any Questions, Comments, Problems, or Parts Orders
Call NorthStar Product Support 1-800-270-0810
KIT PART#
USE ON NorthStar ITEMS:
45934
459382, 459242
REF
PART#
DESCRIPTION
QTY
1
789355
Air Filter Element
2
2
789528
Pump Oil
1
REF
PART#
DESCRIPTION
QTY
3
789376
Air Filter Element
1
2
789528
Pump Oil
2
KIT NUMBER: 45933 & 45934
SERIAL NUMBER: _____________
M45933A.1
Fig04773

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Table of Contents
TABLE OF CONTENTS................................................................................................................................................2
INITIAL SET-UP............................................................................................................................................................3
Kit# 45933................................................................................................................................................................................. 3
Kit# 45934................................................................................................................................................................................. 3
MAINTENANCE & REPAIR..........................................................................................................................................4
MAINTENANCE SCHEDULE SUMMARY....................................................................................................................4
DETAILED INSTRUCTIONS –MAINTENANCE & REPAIR ........................................................................................4
Inspect Safety/Relief Valve ................................................................................................................................................... 4
Inspect Air Filter .................................................................................................................................................................... 4
Change Air Filter Element..................................................................................................................................................... 5
Inspect Compressor for Air Leaks......................................................................................................................................... 5
Engine Maintenance ............................................................................................................................................................. 5
Change Pump Oil.................................................................................................................................................................. 5
Drain Receiver Tank and Inspect Tank................................................................................................................................. 5
Check Drive Belt for Tension and Alignment......................................................................................................................... 5
Inspect & Clean Spark Arrestor (if Equipped) ....................................................................................................................... 6
Keep Compressor Clean....................................................................................................................................................... 6
APPENDIX A: LUBRICANTS AND COMPATIBILITY..................................................................................................7
Alternate Lubricants. ............................................................................................................................................................. 7
LIMITED WARRANTY ..................................................................................................................................................8

3
Initial Set-Up
Inspect & Unpack
Upon receiving your item check for missing or damaged parts.
See below for a diagram of the startup kits’components.
For missing components, contact Product Support at 1-800-270-0810.
For damaged components, contact the freight company that delivered the unit and file a claim.
If complete, fill out product serial number information. See “Limited Warranty” section of this manual.
Kit# 45933
Kit# 45934
Part# 789376
Qty: 1
Part# 789528
Qty: 2
Air Filter Element
Pump Oil
Part# 789355
Qty: 2
Part# 789528
Qty: 1
Air Filter Element
Pump Oil

4
Maintenance & Repair
WARNING: Maintenance hazards
ALWAYS shut off the engine, disconnect the spark plug wire from spark plug (power cord on electric motors) and release air
pressure from the receiver tank before cleaning, adjusting, or servicing the compressor. Make sure all guards and shields are
replaced before re-starting.
Maintenance Schedule Summary
Item
Frequency
Inspect safety/relief valves
Weekly
Check oil level
Weekly
Inspect air filter
Weekly
Replace every 12 months or 1000 hours of
use
Inspect for air leaks
Monthly
Engine maintenance (If applicable)
See engine Owner’s Manual
Change oil: after first 20 hours of use
Every 100 hours of use after that
Change pump oil/ Clean magnetic drain plug
After first 50 hours of use
Every 3 months or 500 hours of use
When using oil provided in NorthStar Start-
up Kit: Every 6 months or 1000 hours of use
Inspect & drain receiver tank
Daily
Check drive belt tension and alignment
Monthly
Inspect & clean spark arrestor (if equipped)
See manufacturer’s instructions
Dust/debris removal
Monthly
See detailed instructions for each maintenance item below.
Detailed Instructions –Maintenance & Repair
NOTICE
Dispose of used motor and pump oil in a manner that is
compatible with the environment and in accordance
with local, state, and federal laws and regulations.
Take used oil in a sealed container to your local
recycling center or service station for reclamation.
Do not throw it in the trash, pour it on the ground, or
pour it down a drain.
No modifications. Never modify or alter the
compressor in any way. Modifications can create
serious safety hazards and will also void the warranty.
Inspect Safety/Relief Valve
This valve should be inspected on a weekly basis if
used regularly or the first time it is being used after a
prolonged period of storage. The safety valve
automatically releases air if the tank pressure exceeds
the preset maximum.
Check the safety/relief valve by pulling the rings.
Replace safety/relief valve that do not operate
freely.
WARNING: Safety/Relief valve hazards
If the safety/relief valve does not work properly, over-
pressurization may occur causing air tank rupture or
explosion. Occasionally pull the ring on the safety valve
to make sure the safety valve operates freely. If the
valve is stuck or does not operate smoothly, it must be
replaced with a valve having the same pressure rating.
Inspect Air Filter
Inspect the compressor’s air filter element on a weekly
basis if used regularly or the first time it is being used
after a prolonged period of no use. A dirty air filter will
not allow the air compressor to operate at full capacity.
Clean air filter when necessary.
Every 12 months or 1000 hours, replace the air
filter element.

5
Change Air Filter Element
The compressor’s air filter element should be changed
every 12 months or after 1000 hours of use.
Figure 1
1. Unscrew wingnut and washer used to hold
cover in place.
2. Remove cover and withdraw air filter element.
3. Replace new air filter element and cover,
securing it with washer and wingnut that were
removed previously.
Note: Keep the air filter clean. Do not operate with the
air filter removed.
Inspect Compressor for Air Leaks
Inspect system for air leaks on a monthly basis, or
again, at the first use after a prolonged period of
storage.
Squirt soapy water around joints during
compressor operation and watch for bubbles.
Developing bubbles indicate a leak is present.
Tighten fittings if necessary.
Engine Maintenance
Perform engine maintenance as specified in the engine
Owner’s Manual. Items include:
Change oil after the first 20 operating hours, and
at least every 100 operating hours thereafter and
oil filter, as directed in engine Owner’s Manual.
WARNING: Burn hazard
Never open oil port while engine is running. Hot oil can
spray over face and body.
Air filter check/replacement
Spark plug cleaning/replacement
Fuel filter check/replacement
Fuel tank cleaning
Change Pump Oil
Northern Tool recommends using synthetic oil after the
first 50 hour break in period. See “Maintenance
Schedule Summary” for recommended frequency of oil
changes. See “Appendix A: Lubricants” for suitable
alternatives.
1. Remove the oil fill and drain plugs. Collect the oil
in a suitable container.
2. Clean and replace the oil drain plug and refill
compressor crankcase with clean oil.
3. Replace the oil fill plug.
4. Start the unit and run for several minutes. Shut
the air compressor down and check the oil level.
If necessary, add more oil. (Figure 2)
Figure 2
Drain Receiver Tank and Inspect Tank
Drain water from the receiver tank daily. Water left in the
tank can cause the tank to weaken and corrode,
increasing the risk of tank rupture.
Northern Tool recommends a tank inspection after every
2 years of service. See “Inspection of Unfired Pressure
Vessels,” volumes 2-9, August 2001, Bill McStraw
(available on-line at NTIS).”
WARNING: Air tank hazards
Failure to replace a rusted air receiver tank could result
in tank rupture or explosion, which could cause
substantial property damage, severe personal injury, or
death. Never modify or repair a tank. Obtain
replacement from service center.
Check Drive Belt for Tension and Alignment
CAUTION: Pulley/sheave hazard
Improper pulley/sheave alignment and belt tension can
result in motor overload, excessive vibration, and
premature belt and/or bearing failure. To prevent this
from happening, check the pulley/sheave alignment and
belt tension on a regular basis.
Belts will stretch from normal use. When properly
adjusted, a 5 lb. force applied to the belt between the
engine pulley and the pump will deflect the belt about
½”.
To align and adjust drive belt tension:
1. Remove the belt guard cover.
Full
Add
Base
Body
Air Filter Element
Cover
Washer
Wingnut

6
2. Loosen the four fasteners holding the
engine/motor to the compressor.
3. Shift the engine/motor in the proper direction. The
belt must be properly aligned when adjustment is
made.
4. To align belt, lay a straight edge against the face
of the flywheel touching the rim at two places.
(Figure 3)
Figure 3
5. Adjust flywheel or engine pulley so that the belt
runs parallel to the straight edge.
6. If necessary, use a gear puller to move the pulley
on the motor shaft. Tighten set screw after pulley
is positioned.
7. Check for proper belt tension. (Figure 4)
Figure 4
8. Tighten the four fasteners holding the engine to
the top plate while tension and alignment is
maintained.
9. Attach the belt guard cover.
Inspect & Clean Spark Arrestor (if equipped)
Equip engine with spark arrestor if machine will be used
near any ignitable forest, brush, or grassy land. (See
engine Owner’s Manual provided to determine if the
engine is already equipped.) Make sure you comply with
applicable local, state, and federal codes.
If the engine is equipped with a spark arrester, clean
and inspect it regularly following manufacturer’s service
instructions. Replace if damaged.
Keep Compressor Clean
Do not allow air intakes to become blocked. If dust or
debris accumulates in the compressor, clean the
compressor with a damp cloth or soft bristle brush.
Note: Do not spray compressor with a garden hose or
pressure washer. Water may enter the compressor
and cause damage to the engine and pump.
IMPORTANT
If a part needs replacement, only use parts that meet
the manufacturer’s part number specifications.
Replacement parts that do not meet specifications may
result in a safety hazard or poor operation of the
compressor. Major service, including installation or
replacement of parts, should be made by a qualified
electrical service technician.
Contact NorthStar Product Support at 1-800-270-0810
For any questions, problems, or parts orders.

7
Appendix A: Lubricants and Compatibility
The following table lists materials that are suitable or not
recommended for use with synthetic oil. As some oil
escapes into the compressed air, all components that
come into contact with the air (i.e., piping, filters, hoses,
tools, etc) must be compatible with synthetic oil.
Northern Tool recommends using synthetic oil after the
first 50 hour break in period.
Suitable
Not Recommended
Viton®, Teflon®, Epoxy
(Glass Filled), Oil
Resistant Alkyd,
Fluorosilicone,
Flourocarbon,
Polysulfide, 2-
Component
Urethane, Nylon,
Delrin®, Celcon®, High
Nitrile Rubber (Buna N.
NBR more than 36
Acrylonite),
Polyurethane,
Polyethylene,
Epichlorohydrin,
Polyacrylate, Melamine,
Polypropylene, Baked
Phenolics, Epoxy,
Modified Alkyds
(® indicates trademark
of DuPont Corporation)
Neoprene, Natural
Rubber, SBR Rubber,
Acrylic Paint, Lacquer,
Varnish, Polystyrene,
PVC, ABS,
Polycarbonite, Cellulose
Acetate, Latex, EPR,
Acrylics, Phenoxy,
Polysulfones, Styrene
Acrylonitile (San), Butyl
Alternate Lubricants
You may use a petroleum-based lubricant that is
premium quality, does not contain detergents, contains
only anti-rust, anti-oxidation, and anti-foam agents as
additives, has a flashpoint of 440ºF (227ºC) or higher,
and has an auto-ignition point of 650ºF (343ºC) or
higher.
See the petroleum lubricant viscosity table below. The
table is intended as a general guide only. Heavy-duty
operating conditions require heavier viscosities.
Refer specific operating conditions to NorthStar Product
Support at 1-800-270-0810.
Temperature around
Compressor
Viscosity Grade
ISO
SAE
Below 40ºF (4ºC)
60
20
40ºF to 80ºF
(4ºC to 27ºC)
100
30
80ºF to 100ºF
(27ºC to 38ºC)
150
40

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Limited Warranty
Dear Valued Customer:
The NorthStar Product you just purchased is built with the finest material and craftsmanship. Use this product properly and enjoy the benefits
from its high performance. By purchasing a NorthStar product, you show a desire for quality and durability. Like all mechanical equipment,
the air compressor you purchased requires a due amount of care. This startup kit will help you treat your air compressor like the high quality
piece of machinery it is. Neglect and improper handling may impair its performance. Please thoroughly read the instructions and understand
the operation before using your product. Always contact NorthStar Product Support at 1-800-270-0810 prior to having any service or warranty
work performed, as some services performed by parties other than NorthStar approved service centers may void this warranty. This warranty
is in lieu of any other warranty expressed or implied and NorthStar assumes no other responsibility or liability outside that expressed within this
warranty.
Limited Warranty
Startup kit and NorthStar air compressor must be purchased coincidentally to receive extended limited warranty on pump.
NorthStar shall warranty any piece of equipment manufactured, or parts of equipment manufactured, to be free from defects in material or
workmanship for a period of:
Pump Warranty
Item #
When Purchased with NorthStar Air
Compressor Item Number:
Consumer Warranty Period
Commercial Warranty Period
45933
459212, 459222, 459232, 459392,
25653, 25654
Extends limited warranty, on only the pump, to 5 years from date of original purchase
45934
459242, 459382
“Consumer use” means personal residential household use by a consumer. “Commercial use” means all other uses, including use for
commercial, income producing or rental purposes or when purchased by a business.
This warranty applies to the original purchaser of the equipment (verification of purchase, in the form of a receipt, is the responsibility of the
buyer), is non-transferable, and covers parts and labor. Parts will be replaced or repaired at no charge, except when the equipment has failed
due to lack of proper maintenance. If a part is no longer available, the part may be replaced with a similar part of equal function. Any misuse,
abuse, alteration or improper installation or operations will void warranty. Determining whether a part is to be replaced or repaired is the sole
decision of NorthStar. NorthStar will not provide for replacement of complete products due to defective parts. Any costs incurred due to
replacement or repair of items outside of a NorthStar approved facility is the responsibility of the buyer and not covered under warranty.
Transportation costs to and from service center is the responsibility of the customer.
This warranty specifically excludes the following; failure of parts due to damage caused by accident, fire, flood, windstorm, acts of God,
applications not approved by NorthStar in writing, corrosion caused by chemicals, use of replacement parts which do not conform to
manufacturer’s specifications, damage to accessory parts such as starting batteries, damage related to rodent and/or insect infestation and
damage caused by vandalism. Additional exclusions: loss of running time, inconvenience, loss of income, or loss of use, including any implied
warranty of merchantability of fitness for a specific use. Also, Outdoor Power Equipment needs periodic parts and service to perform well, and
this warranty does not cover instances when normal use has exhausted the life of a component or the engine.
This warranty does not cover any personal injury or damage to surrounding property caused by failure of any part. Repair or replacement of
parts does not extend the warranty period.
Please fill in the following information and have it on hand when you call in on a warranty claim.
Customer Number: ______________________________________________________________
Date of Purchase: _______________________________________________________________
NorthStar Serial Number: _________________________________________________________
Item Number: __________________________________________________________________

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Manufactured by
Northern Tool + Equipment Co., Ltd
Burnsville, MN 55306
NorthernTool.com