Oster
Small Appliance

Model # 990-48 Official Oster grinder

Here are the diagrams and repair parts for Official Oster 990-48 grinder, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 70 parts  |

Pusher 5788-002
#2A

Grinder body assembly diagram

Pusher

Part #5788-002

The manufacturer no longer makes this part, and there's no substitute part

Knife 206404
#9

Grinder body assembly diagram

Knife

Part #206404

The manufacturer no longer makes this part, and there's no substitute part

Cord And Plug 208896
#41

Replacement parts diagram

Cord and plug

Part #208896

The manufacturer no longer makes this part, and there's no substitute part

Grinder Body 5105-007
#1B

Grinder body assembly diagram

Grinder body

Part #5105-007

The manufacturer no longer makes this part, and there's no substitute part

Grommet 208888
#2

Replacement parts diagram

Grommet

Part #208888

The manufacturer no longer makes this part, and there's no substitute part

Mtr Brckt As 208334
#33

Replacement parts diagram

Mtr brckt as

Part #208334

The manufacturer no longer makes this part, and there's no substitute part

Bearing 4392-000
#15

Replacement parts diagram

Bearing

Part #4392-000

The manufacturer no longer makes this part, and there's no substitute part

Gear 205160
#9

Replacement parts diagram

Gear

Part #205160

The manufacturer no longer makes this part, and there's no substitute part

Terminal 78851
#45

Replacement parts diagram

Terminal

Part #78851

The manufacturer no longer makes this part, and there's no substitute part

Armature 210218
#27

Replacement parts diagram

Armature

Part #210218

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your log splitters

Choose a symptom to see related log splitter repairs.

Main cause: worn hydraulic valve seals around the actuator rod…

Main causes: broken pump coupler, clogged hydraulic fluid filter, bad hydraulic control valve, broken hydraulic pump, ba…

Main cause: worn hydraulic cylinder seals…

Main cause: worn hydraulic pump seals…

Main causes: leaky head gasket, damaged sump gasket, leaky oil drain plug, damaged fuel line, bad carburetor seals…

Main causes: dirty carburetor, bad spark plug, clogged air filter, stale fuel…

Main causes: dirty carburetor, stale fuel, bad spark plug, broken recoil starter…

Most common repair guides to help fix your log splitters

These step-by-step repair guides will help you safely fix what’s broken on your log splitter.

How to replace a log splitter recoil starter

How to replace a log splitter recoil starter

The recoil starter spins the engine on the log splitter when you pull the starter rope, and the rope retracts when relea…

Repair difficulty
Time required
 15 minutes or less
How to replace a log splitter flexible pump coupler

How to replace a log splitter flexible pump coupler

The flexible nylon log splitter pump coupler deteriorates over time. Replace the flexible pump coupler if it begins to v…

Repair difficulty
Time required
 15 minutes or less
How to replace a log splitter fuel line

How to replace a log splitter fuel line

The fuel line carries the fuel supply from the gas tank to the carburetor. If the fuel line is cracked and leaking, repl…

Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your log splitters

Use the advice and tips in these articles to get the most out of your log splitter.

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

Find the right carburetor assembly for a Craftsman snowblower, tiller or log splitter

This chart will help you find the right carburetor for your Craftsman snowblower, tiller or log splitter.…

Log splitter common questions

Log splitter common questions

Learn more about your log splitter with these frequently asked questions.…

How to change the hydraulic fluid in a log splitter

How to change the hydraulic fluid in a log splitter

Learn how to change the hydraulic fluid in your log splitter.…