How to Load Mini Grease Gun
How to load a mini grease gun, cartridge or bulk, with air bled out before the first pump, plus 4 mini grease guns for tight spaces.
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Seesii Mini Grease Gun 3 oz9.6/10View on Amazon - 2
Seesii 3 oz Mini Grease Gun9.6/10View on Amazon - 3
KRETLAW Mini Grease Gun Kit 3000PSI Marine9.6/10View on Amazon - 4
YATOINTO 18 Pcs 3oz Mini Grease Gun Kit,Universal9.5/10View on Amazon
This guide shows how to load mini grease gun kits: open the gun, fit a cartridge or pack in bulk grease, then bleed the air out before the first pump. A mini gun takes a small cartridge, so loading is a bench job, not a wrestling match with a full-size gun. The steps below work for cartridge loading and for bulk loading, and the guns in the gear section show which method each one takes.
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Seesii Mini Grease Gun 3 oz
A 3 oz mini grease gun rated at 4000 PSI with an air bleed knob, 4 couplers and loading from cartridges or bulk grease.
Pros
- 4000 PSI, the highest pressure here
- 0.95 lb, light for tight spaces
- Air bleed knob releases trapped air for easy priming
- Loads 3 oz cartridges or bulk grease
Cons
- 3 oz capacity needs frequent refills
- Compact size suits touch-ups, not large jobs
- No extension tubes are included
- No gloves are included
Seesii 3 oz Mini Grease Gun
A 3 oz mini grease gun rated at 4000 PSI with an air bleed knob, 4 attachments and loading from cartridges or bulk grease.
Pros
- 4000 PSI, the highest pressure here
- 0.95 lb, light for tight spaces
- Air bleed knob releases trapped air for easy priming
- Loads 3 oz cartridges or bulk grease
Cons
- 3 oz capacity needs frequent refills
- 2 year warranty, shorter than the 3 year Seesii
- No extension tubes are included
- No gloves are included
KRETLAW Mini Grease Gun Kit 3000PSI Marine
A 3000 PSI mini grease gun in die-cast aluminum with a T-style lever, a 12 in flex hose and a 3 oz cartridge included.
Pros
- 3000 PSI in a die-cast aluminum body
- 3 oz cartridge included, ready to grease
- 12 in flex hose with 4 nozzles and 2 extension tubes
- T-style lever handle with a non-slip grip
Cons
- Included 3 oz cartridge is small
- 3000 PSI, lower than the 4000 PSI Seesii guns
- 1 year warranty, the lowest stated term here
- No carry case is included
YATOINTO 18 Pcs 3oz Mini Grease Gun Kit,Universal
A 3000 PSI mini grease gun kit with an NLGI #2 cartridge, a 12 in spring hose, needle tips and a carry case.
Pros
- 3000 PSI with leak-proof seals
- NLGI #2 grease cartridge included, ready to use
- 12 in spring hose and needle tips for tight spots
- Carry case keeps the kit together
Cons
- No warranty term is stated
- 3000 PSI, lower than the 4000 PSI Seesii guns
- 3 oz cartridge is small
- No gloves are included
How to load mini grease gun
Start with a clean gun and the grease the manual calls for. Work on a bench with a rag under the gun, and keep dirt out of the barrel: dirt in the barrel ends up in the fitting.
- Pull the plunger rod back and lock it, then unscrew the head from the barrel.
- For a cartridge: pull the cap and seal from the cartridge, slide it into the barrel, then screw the head back on.
- For bulk grease: pack grease into the barrel, pressing out air pockets as you fill.
- Screw the head back on, release the plunger rod and push it in slowly.
- Bleed the air: open the air bleed knob where the gun has one, or pump the handle until grease flows without sputtering.
- Prime the gun: pump until a steady bead of grease shows at the coupler, then wipe the coupler clean.
Cartridge or bulk grease: which loading method fits
The Seesii guns take both: standard 3 oz cartridges or bulk grease from a tub, so you can refill from whichever you have on hand. The KRETLAW gun comes with a 3 oz cartridge, while the YATOINTO gun takes standard 3 oz grease tubes with a universal NLGI #2 cartridge included.
Mini grease guns for loading practice
The loading step is where these guns differ: the Seesii guns bleed air with a knob and take bulk grease, the KRETLAW gun loads cartridges with a hose and nozzles ready, and the YATOINTO kit packs a cartridge with a carry case.
What to look for in a mini grease gun
Pressure comes first: the Seesii guns reach 4000 PSI and the KRETLAW and YATOINTO guns reach 3000 PSI, so match the pressure to the fitting. Capacity comes next: all four guns take 3 oz cartridges, and only the Seesii guns also take bulk grease. Weight matters in tight spaces: the Seesii guns weigh 0.95 lb each. An air bleed knob makes priming easier. Warranty terms run from 1 year on the KRETLAW gun to 3 years on the longer-term Seesii gun; the YATOINTO kit states no warranty term.
FAQ: garage tools
Can I load a mini grease gun with bulk grease?
Yes, with the Seesii guns: both take 3 oz cartridges or bulk grease from a tub. The KRETLAW and YATOINTO guns load cartridges, so keep cartridges on hand for those.
What size grease cartridge fits a mini grease gun?
A 3 oz cartridge fits all four guns here. The KRETLAW kit includes a 3 oz cartridge, and the YATOINTO kit includes a universal NLGI #2 cartridge.
How do I get air out of a mini grease gun?
Open the air bleed knob where the gun has one: both Seesii guns have one. Then pump the handle until grease flows in a steady bead without sputtering, and wipe the coupler clean.
What pressure do these mini grease guns reach?
The Seesii guns reach 4000 PSI, and the KRETLAW and YATOINTO guns reach 3000 PSI. Match the pressure to the fitting, and follow the gun manual for the load.
Which mini grease gun has the longest warranty?
The Seesii gun with the 3 year warranty, at 3 years. The other Seesii gun carries 2 years, the KRETLAW gun carries 1 year, and the YATOINTO kit states no warranty term.
Related: the engine and shop equipment hub, best 3 oz grease gun and best grease gun. Also see air-powered vs cordless grease gun.
